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*: remove and merge duplicate pages (#15983)

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# chsh
> Change user's login shell.
> See platform-specific pages for more options.
> More information: <https://manned.org/chsh>.
- Set a specific login shell for the current user interactively:
`chsh`
- Set a specific login [s]hell for the current user:
`chsh -s {{path/to/shell}}`
- Set a login [s]hell for a specific user:
`chsh -s {{path/to/shell}} {{username}}`

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`coproc {{name}} { while read line; do {{command1; command2; ...}}; done }`
- Create a coprocess which repeatedly reads `stdin`, runs a pipeline on the input, and writes the output to `stdout`:
`coproc {{name}} { while read line; do echo "$line" | {{command1 | command2 | ...}} | cat /dev/fd/0; done }`
- Create and use a coprocess running `bc`:
`coproc BC { bc --mathlib; }; echo "1/3" >&"${BC[1]}"; read output <&"${BC[0]}"; echo "$output"`

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- Recursively copy a directory's contents to another location (if the destination exists, the directory is copied inside it):
`cp -R {{path/to/source_directory}} {{path/to/target_directory}}`
`cp {{[-r|--recursive]}} {{path/to/source_directory}} {{path/to/target_directory}}`
- Copy a directory recursively, in verbose mode (shows files as they are copied):
`cp -vR {{path/to/source_directory}} {{path/to/target_directory}}`
`cp {{[-vr|--verbose --recursive]}} {{path/to/source_directory}} {{path/to/target_directory}}`
- Copy multiple files at once to a directory:
`cp -t {{path/to/destination_directory}} {{path/to/file1 path/to/file2 ...}}`
`cp {{[-t|--target-directory]}} {{path/to/destination_directory}} {{path/to/file1 path/to/file2 ...}}`
- Copy text files to another location, in interactive mode (prompts user before overwriting):
- Copy all files with a specific extension to another location, in interactive mode (prompts user before overwriting):
`cp -i {{*.txt}} {{path/to/target_directory}}`
`cp {{[-i|--interactive]}} {{*.ext}} {{path/to/target_directory}}`
- Follow symbolic links before copying:
`cp -L {{link}} {{path/to/target_directory}}`
`cp {{[-L|--dereference]}} {{link}} {{path/to/target_directory}}`
- Use the first argument as the destination directory (useful for `xargs ... | cp -t <DEST_DIR>`):
- Use the full path of source files, creating any missing intermediate directories when copying:
`cp -t {{path/to/target_directory}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
`cp --parents {{source/path/to/file}} {{path/to/target_file}}`

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> Duc maintains a database of accumulated sizes of directories of the file system, allowing queries in this database, or creating fancy graphs to show where data is.
> More information: <http://duc.zevv.nl>.
- Index the /usr directory, writing to the default database location ~/.duc.db:
- Index the `/usr` directory, writing to the default database location `~/.duc.db`:
`duc index {{/usr}}`
- List all files and directories under /usr/local, showing relative file sizes in a [g]raph:
- List all files and directories under `/usr/local`, showing relative file sizes in a graph:
`duc ls -Fg {{/usr/local}}`
`duc ls {{[-Fg|--classify --graph]}} {{/usr/local}}`
- List all files and directories under /usr/local using treeview recursively:
- List all files and directories under `/usr/local` using treeview recursively:
`duc ls -Fg -R {{/usr/local}}`
`duc ls {{[-Fg|--classify --graph]}} {{[-R|--recursive]}} {{/usr/local}}`
- Start the graphical interface to explore the file system using sunburst graphs:

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- Start an interactive editor session with an empty document and without diagnostics, byte counts and '!' prompt:
`ed {{[-q|--quiet]}}`
`ed {{[-q|--quiet]}} {{[-s|--script]}}`
- Start an interactive editor session without exit status change when command fails:

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# flex
> Lexical analyzer generator. A rewrite of `lex` with extensions to the POSIX specification.
> Given the specification for a lexical analyzer, generates C code implementing it.
> Note: long options don't work on OpenBSD.
> More information: <https://manned.org/flex>.
- Generate an analyzer from a flex file, storing it to the file `lex.yy.c`:
`lex {{analyzer.l}}`
- Write analyzer to `stdout`:
`lex -{{-stdout|t}} {{analyzer.l}}`
- Specify the output file:
`lex {{analyzer.l}} -o {{analyzer.c}}`
- Generate a [B]atch scanner instead of an interactive scanner:
`lex -B {{analyzer.l}}`
- Compile a C file generated by Lex:
`cc {{path/to/lex.yy.c}} --output {{executable}}`

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> View the last logged in users.
> More information: <https://manned.org/last>.
- View last logins, their duration and other information as read from `/var/log/wtmp`:
- View last login infromation (e.g., username, terminal, boot time, kernel) of all users as read from `/var/log/wtmp`:
`last`
- List login information of a specific user:
`last {{username}}`
- Specify how many of the last logins to show:
`last -n {{login_count}}`
`last {{[-n|--limit]}} {{login_count}}`
- Print the full date and time for entries and then display the hostname column last to prevent truncation:
`last -F -a`
`last {{[-F|--fulltimes]}} {{[-a|--hostlast]}}`
- View all logins by a specific user and show the IP address instead of the hostname:
`last {{username}} -i`
`last {{username}} {{[-i|--ip]}}`
- List information since a specific time and date:
`last {{[-s|--since]}} {{-7days}}`
- View all recorded reboots (i.e., the last logins of the pseudo user "reboot"):
`last reboot`
- View all recorded shutdowns (i.e., the last logins of the pseudo user "shutdown"):
- Display help:
`last shutdown`
`last {{[-h|--help]}}`

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> Lexical analyzer generator.
> Given the specification for a lexical analyzer, generates C code implementing it.
> Note: on most major OSes, this command is an alias for `flex`.
> More information: <https://manned.org/lex.1>.
> More information: <https://manned.org/lex>.
- Generate an analyzer from a Lex file, storing it to the file `lex.yy.c`:

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@ -7,26 +7,30 @@
`man {{command}}`
- Open the man page for a command in a browser (`BROWSER` environment variable can replace `=browser_name`):
`man {{[-Hbrowser_name|--html=browser_name]}} {{command}}`
- Display the man page for a command from section 7:
`man {{7}} {{command}}`
- List all available sections for a command:
`man -f {{command}}`
`man {{[-f|--whatis]}} {{command}}`
- Display the path searched for manpages:
`man --path`
`man {{[-w|--path]}}`
- Display the location of a manpage rather than the manpage itself:
`man -w {{command}}`
`man {{[-w|--where]}} {{command}}`
- Display the man page using a specific locale:
`man {{command}} --locale={{locale}}`
`man {{[-L|--locale]}} {{locale}} {{command}}`
- Search for manpages containing a search string:
`man -k "{{search_string}}"`
`man {{[-k|--apropos]}} "{{search_string}}"`

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# mycli
> A command-line client for MySQL that can do auto-completion and syntax highlighting.
> More information: <https://mycli.net>.
> A CLI for MySQL, MariaDB, and Percona that can do auto-completion and syntax highlighting.
> More information: <https://manned.org/mycli>.
- Connect to a local database on port 3306, using the current user's username:
@ -9,8 +9,8 @@
- Connect to a database (user will be prompted for a password):
`mycli -u {{username}} {{database_name}}`
`mycli {{[-u|--user]}} {{username}} {{database_name}}`
- Connect to a database on another host:
`mycli -h {{database_host}} -P {{port}} -u {{username}} {{database_name}}`
`mycli {{[-h|--host]}} {{database_host}} {{[-P|--port]}} {{port}} {{[-u|--user]}} {{username}} {{database_name}}`

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# pngcheck
> Print detailed information about and verify PNG, JNG, and MNG files.
> More information: <http://www.libpng.org/pub/png/apps/pngcheck.html>.
> Forensics tool for validating the integrity of PNG based (PNG, JNG, MNG) image files.
> Can also extract embedded images and text from a file.
> More information: <https://github.com/pnggroup/pngcheck>.
- Print a summary for an image (width, height, and color depth):
- Verify the integrity of an image file (width, height, and color depth):
`pngcheck {{path/to/image.png}}`

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> See also: `nice`.
> More information: <https://manned.org/renice>.
- Increase/decrease the priority of a running [p]rocess:
- Set the absolute priority of a running process:
`renice -n {{3}} -p {{pid}}`
`renice --priority {{3}} {{[-p|--pid]}} {{pid}}`
- Increase/decrease the priority of all processes owned by a [u]ser:
- Increase the priority of a running process:
`renice -n {{-4}} -u {{uid|user}}`
`sudo renice --relative {{-4}} {{[-p|--pid]}} {{pid}}`
- Increase/decrease the priority of all processes that belong to a process [g]roup:
- Decrease the priority of all processes owned by a user:
`renice -n {{5}} -g {{process_group}}`
`renice --relative {{4}} {{[-u|--user]}} {{uid|user}}`
- Set the priority of all processes that belong to a process group:
`sudo renice {{-5}} {{[-g|--pgrp]}} {{process_group}}`

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- Remove specific files ignoring nonexistent ones:
`rm -f {{path/to/file1 path/to/file2 ...}}`
`rm {{[-f|--force]}} {{path/to/file1 path/to/file2 ...}}`
- Remove specific files interactively prompting before each removal:
`rm -i {{path/to/file1 path/to/file2 ...}}`
`rm {{[-i|--interactive]}} {{path/to/file1 path/to/file2 ...}}`
- Remove specific files printing info about each removal:
`rm -v {{path/to/file1 path/to/file2 ...}}`
`rm {{[-v|--verbose]}} {{path/to/file1 path/to/file2 ...}}`
- Remove specific files and directories recursively:
`rm -r {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
`rm {{[-r|--recursive]}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Remove empty directories (this is considered the safe method):
`rm {{[-d|--dir]}} {{path/to/directory}}`

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- Remove specific nested directories recursively:
`rmdir -p {{path/to/directory1 path/to/directory2 ...}}`
`rmdir {{[-p|--parents]}} {{path/to/directory1 path/to/directory2 ...}}`

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# script
> Make a typescript file of a terminal session.
> Record all terminal output to a typescript file.
> More information: <https://manned.org/script>.
- Start recording in file named "typescript":
- Record a new session to a file named `typescript` in the current directory:
`script`
@ -11,14 +11,22 @@
`exit`
- Start recording in a given file:
- Record a new session to a custom filepath:
`script {{logfile.log}}`
`script {{path/to/session.out}}`
- Append to an existing file:
`script -a {{logfile.log}}`
`script {{[-a|--append]}} {{logfile.log}}`
- Record timing information (data is outputted to `stderr`):
`script {{[-t|--timing]}} 2> {{path/to/timing_file}}`
- Write out data as soon as it happens:
`script {{[-f|--flush]}} {{path/to/file}}`
- Execute quietly without start and done messages:
`script -q {{logfile.log}}`
`script {{[-q|--quiet]}} {{logfile.log}}`

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`{{cat path/to/file}} | tac`
- Use a specific [s]eparator:
- Use a specific separator:
`tac -s {{separator}} {{path/to/file1 path/to/file2 ...}}`
`tac {{[-s|--separator]}} {{separator}} {{path/to/file1 path/to/file2 ...}}`
- Use a specific [r]egex as a [s]eparator:
- Use a specific regex as a separator:
`tac -r -s {{separator}} {{path/to/file1 path/to/file2 ...}}`
`tac {{[-r|--regex]}} {{[-s|--separator]}} {{separator}} {{path/to/file1 path/to/file2 ...}}`
- Use a separator [b]efore each file:
- Use a separator before each file:
`tac -b {{path/to/file1 path/to/file2 ...}}`
`tac {{[-b|--before]}} {{path/to/file1 path/to/file2 ...}}`

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`uname`
- Print all available system information:
`uname {{[-a|--all]}}`
- Print system architecture and processor information:
`uname --machine --processor`
`uname {{[-mp|--machine --processsor]}}`
- Print kernel name, kernel release and kernel version:
`uname --kernel-name --kernel-release --kernel-version`
`uname {{[-srv|--kernel-name --kernel-release --kernel-version]}}`
- Print system hostname:
`uname --nodename`
`uname {{[-n|--nodename]}}`
- Print all available system information:
- Print the current operating system name:
`uname --all`
`uname {{[-o|--operating-system]}}`
- Print the current network node host name:
`uname {{[-n|--nodename]}}`
- Display help:
`uname --help`

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# w
> Show who is logged on and what they are doing.
> Print user login, TTY, remote host, login time, idle time, current process.
> Display who is logged in and their processes.
> More information: <https://manned.org/w>.
- Show logged-in users info:
- Display information about all users who are currently logged in:
`w`
- Show logged-in users info without a header:
- Display information about a specific user:
`w -h`
`w {{username}}`
- Display logged-in user information without a header:
`w {{[-h|--no-header]}}`
- Display information without including the login, JCPU and PCPU columns:
`w {{[-s|--short]}}`

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> See also: `unzip`.
> More information: <https://manned.org/zip>.
- Add files/directories to a specific archive ([r]ecursively):
- Add files/directories to a specific archive:
`zip -r {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
`zip {{[-r|--recurse-paths]}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Remove files/directories from a specific archive ([d]elete):
- Remove files/directories from a specific archive:
`zip -d {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
`zip {{[-d|--delete]}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Archive files/directories e[x]cluding specified ones:
- Archive files/directories excluding specified ones:
`zip -r {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}} -x {{path/to/excluded_files_or_directories}}`
`zip {{[-r|--recurse-paths]}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}} {{-x|--exclude}} {{path/to/excluded_files_or_directories}}`
- Archive files/directories with a specific compression level (`0` - the lowest, `9` - the highest):
`zip -r -{{0..9}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
`zip {{[-r|--recurse-paths]}} -{{0..9}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Create an [e]ncrypted archive with a specific password:
- Create an encrypted archive with a specific password:
`zip -r -e {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
`zip {{[-r|--recurse-paths]}} {{[-e|--encrypt]}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Archive files/directories to a multi-part [s]plit Zip archive (e.g. 3 GB parts):
- Archive files/directories to a multi-part split Zip archive (e.g. 3 GB parts):
`zip -r -s {{3g}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
`zip {{[-r|--recurse-paths]}} {{[-s|--split-size]}} {{3g}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Print a specific archive contents:
`zip -sf {{path/to/compressed.zip}}`
`zip {{[-sf|--split-size --freshen]}} {{path/to/compressed.zip}}`

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`chsh`
- Set a specific login [s]hell for the current user:
- List available shells:
`chsh --shell {{path/to/shell}}`
`chsl {{[-l|--list-shells]}}`
- Set a login [s]hell for a specific user:
- Set a specific login shell for the current user:
`sudo chsh --shell {{path/to/shell}} {{username}}`
`chsh {{[-s|--shell]}} {{path/to/shell}}`
- Set a login shell for a specific user:
`sudo chsh {{[-s|--shell]}} {{path/to/shell}} {{username}}`

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# coproc
> Bash builtin for creating interactive asynchronous subshells.
> More information: <https://www.gnu.org/software/bash/manual/bash.html#Coprocesses>.
- Run a subshell asynchronously:
`coproc { {{command1; command2; ...}}; }`
- Create a coprocess with a specific name:
`coproc {{name}} { {{command1; command2; ...}}; }`
- Write to a specific coprocess `stdin`:
`echo "{{input}}" >&"${{{name}}[1]}"`
- Read from a specific coprocess `stdout`:
`read {{variable}} <&"${{{name}}[0]}"`
- Create a coprocess which repeatedly reads `stdin` and runs some commands on the input:
`coproc {{name}} { while read line; do {{command1; command2; ...}}; done }`
- Create a coprocess which repeatedly reads `stdin`, runs a pipeline on the input, and writes the output to `stdout`:
`coproc {{name}} { while read line; do echo "$line" | {{command1 | command2 | ...}} | cat /dev/fd/0; done }`
- Create and use a coprocess running `bc`:
`coproc BC { bc --mathlib; }; echo "1/3" >&"${BC[1]}"; read output <&"${BC[0]}"; echo "$output"`

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# cp
> Copy files and directories.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/cp-invocation.html>.
- Copy a file to another location:
`cp {{path/to/source_file.ext}} {{path/to/target_file.ext}}`
- Copy a file into another directory, keeping the filename:
`cp {{path/to/source_file.ext}} {{path/to/target_parent_directory}}`
- Recursively copy a directory's contents to another location (if the destination exists, the directory is copied inside it):
`cp {{[-r|--recursive]}} {{path/to/source_directory}} {{path/to/target_directory}}`
- Copy a directory recursively, in verbose mode (shows files as they are copied):
`cp {{[-vr|--verbose --recursive]}} {{path/to/source_directory}} {{path/to/target_directory}}`
- Copy multiple files at once to a directory:
`cp {{[-t|--target-directory]}} {{path/to/destination_directory}} {{path/to/file1 path/to/file2 ...}}`
- Copy all files with a specific extension to another location, in interactive mode (prompts user before overwriting):
`cp {{[-i|--interactive]}} {{*.ext}} {{path/to/target_directory}}`
- Follow symbolic links before copying:
`cp {{[-L|--dereference]}} {{link}} {{path/to/target_directory}}`
- Use the full path of source files, creating any missing intermediate directories when copying:
`cp --parents {{source/path/to/file}} {{path/to/target_file}}`

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# duc
> A collection of tools for indexing, inspecting and visualizing disk usage.
> Duc maintains a database of accumulated sizes of directories in the file system, allowing to query this database, or creating fancy graphs to show where data is.
> More information: <http://duc.zevv.nl>.
- Index the `/usr` directory, writing to the default database location `~/.duc.db`:
`duc index {{/usr}}`
- List all files and directories under `/usr/local`, showing relative file sizes in a [g]raph:
`duc ls --classify --graph {{/usr/local}}`
- List all files and directories under `/usr/local` using treeview recursively:
`duc ls --classify --graph --recursive {{/usr/local}}`
- Start the graphical interface to explore the file system using sunburst graphs:
`duc gui {{/usr}}`
- Run the ncurses console interface to explore the file system:
`duc ui {{/usr}}`
- Dump database info:
`duc info`

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# flex
> Lexical analyzer generator.
> Given the specification for a lexical analyzer, generates C code implementing it.
> More information: <https://manned.org/lex.1>.
- Generate an analyzer from a Lex file, storing it to the file `lex.yy.c`:
`flex {{analyzer.l}}`
- Write analyzer to `stdout`:
`flex {{[-t|--stdout]}} {{analyzer.l}}`
- Specify the output file:
`flex {{analyzer.l}} {{[-o|--outfile]}} {{analyzer.c}}`
- Generate a batch scanner instead of an interactive scanner:
`flex {{[-B|--batch]}} {{analyzer.l}}`
- Compile a C file generated by Lex:
`cc {{path/to/lex.yy.c}} -o {{executable}}`

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@ -1,25 +0,0 @@
# killall
> Send kill signal to all instances of a process by name (must be exact name).
> All signals except SIGKILL and SIGSTOP can be intercepted by the process, allowing a clean exit.
> More information: <https://manned.org/killall>.
- Terminate a process using the default SIGTERM (terminate) signal:
`killall {{process_name}}`
- List available signal names (to be used without the 'SIG' prefix):
`killall --list`
- Interactively ask for confirmation before termination:
`killall -i {{process_name}}`
- Terminate a process using the SIGINT (interrupt) signal, which is the same signal sent by pressing `<Ctrl c>`:
`killall -INT {{process_name}}`
- Force kill a process:
`killall -KILL {{process_name}}`

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# last
> List information of last user logins.
> See also: `lastb`, `login`.
> More information: <https://manned.org/last.1>.
- List login information (e.g., username, terminal, boot time, kernel) of all users:
`last`
- List login information of a specific user:
`last {{username}}`
- List information of a specific TTY:
`last {{tty1}}`
- List most recent information (by default, the newest are at the top):
`last | tac`
- List information of system boots:
`last "{{system boot}}"`
- List information with a specific [t]imestamp format:
`last --time-format {{notime|full|iso}}`
- List information [s]ince a specific time and date:
`last --since {{-7days}}`
- List information (i.e., hostname and IP) of remote hosts:
`last --dns`

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# lex
> Lexical analyzer generator.
> Given the specification for a lexical analyzer, generates C code implementing it.
> More information: <https://manned.org/lex.1>.
> This command is an alias of `flex`.
- Generate an analyzer from a Lex file, storing it to the file `lex.yy.c`:
- View documentation for the original command:
`lex {{analyzer.l}}`
- Write analyzer to `stdout`:
`lex -{{-stdout|t}} {{analyzer.l}}`
- Specify the output file:
`lex {{analyzer.l}} --outfile {{analyzer.c}}`
- Generate a [B]atch scanner instead of an interactive scanner:
`lex -B {{analyzer.l}}`
- Compile a C file generated by Lex:
`cc {{path/to/lex.yy.c}} --output {{executable}}`
`tldr flex`

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@ -1,36 +0,0 @@
# man
> Format and display manual pages.
> More information: <https://manned.org/man>.
- Display the man page for a command:
`man {{command}}`
- Open the man page for a command in a browser (`BROWSER` environment variable can replace `=browser_name`):
`man {{[-Hbrowser_name|--html=browser_name]}} {{command}}`
- Display the man page for a command from section 7:
`man {{7}} {{command}}`
- List all available sections for a command:
`man {{[-f|--whatis]}} {{command}}`
- Display the path searched for manpages:
`man {{[-w|--path]}}`
- Display the location of a manpage rather than the manpage itself:
`man {{[-w|--where]}} {{command}}`
- Display the man page using a specific locale:
`man {{[-L|--locale]}} {{locale}} {{command}}`
- Search for manpages containing a search string:
`man {{[-k|--apropos]}} "{{search_string}}"`

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@ -2,7 +2,7 @@
> Check or set a terminal's ability to receive messages from other users, usually from the `write` command.
> See also `write`, `talk`.
> More information: <https://manned.org/mesg.1>.
> More information: <https://manned.org/mesg>.
- Check terminal's openness to write messages:
@ -16,6 +16,6 @@
`mesg y`
- Enable [v]erbose mode, printing a warning if the command is not executed from a terminal:
- Enable verbose mode, printing a warning if the command is not executed from a terminal:
`mesg --verbose`
`mesg {{[-v|--verbose]}}`

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@ -25,4 +25,4 @@
- Create an empty temporary directory and print its absolute path:
`mktemp --directory`
`mktemp {{[-d|--directory]}}`

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@ -1,16 +0,0 @@
# mycli
> A CLI for MySQL, MariaDB, and Percona with auto-completion and syntax highlighting.
> More information: <https://manned.org/mycli>.
- Connect to a database with the currently logged in user:
`mycli {{database_name}}`
- Connect to a database with the specified user:
`mycli -u {{user}} {{database_name}}`
- Connect to a database on the specified host with the specified user:
`mycli -u {{user}} -h {{host}} {{database_name}}`

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@ -1,7 +1,7 @@
# nl
> Number lines from a file or from `stdin`.
> More information: <https://manned.org/nl.1p>.
> More information: <https://manned.org/man/nl>.
- Number non-blank lines in a file:
@ -11,26 +11,26 @@
`{{command}} | nl -`
- Number [a]ll [b]ody lines including blank lines or do [n]ot number [b]ody lines:
- Number [a]ll body lines including blank lines or do [n]ot number body lines:
`nl --body-numbering {{a|n}} {{path/to/file}}`
`nl {{[-b|--body-numbering]}} {{a|n}} {{path/to/file}}`
- Number only the [b]ody lines that match a basic regular expression (BRE) [p]attern:
- Number only the body lines that match a basic regular expression (BRE) [p]attern:
`nl --body-numbering p'FooBar[0-9]' {{path/to/file}}`
`nl {{[-b|--body-numbering]}} p'FooBar[0-9]' {{path/to/file}}`
- Use a specific [i]ncrement for line numbering:
- Use a specific increment for line numbering:
`nl --line-increment {{increment}} {{path/to/file}}`
`nl {{[-i|--line-increment]}} {{increment}} {{path/to/file}}`
- Specify the line numbering format to [r]ight or [l]eft justified, keeping leading [z]eros or [n]ot:
`nl --number-format {{rz|ln|rn}}`
`nl {{[-n|--number-format]}} {{rz|ln|rn}}`
- Specify the line numbering's [w]idth (6 by default):
- Specify the line numbering's width (6 by default):
`nl --number-width {{col_width}} {{path/to/file}}`
`nl {{[-w|--number-width]}} {{col_width}} {{path/to/file}}`
- Use a specific string to [s]eparate the line numbers from the lines (TAB by default):
- Use a specific string to separate the line numbers from the lines (TAB by default):
`nl --number-separator {{separator}} {{path/to/file}}`
`nl {{[-s|--number-separator]}} {{separator}} {{path/to/file}}`

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@ -1,21 +0,0 @@
# pngcheck
> Forensics tool for validating the integrity of PNG based (PNG, JNG, MNG) image files.
> Can also extract embedded images and text from a file.
> More information: <http://www.libpng.org/pub/png/apps/pngcheck.html>.
- Verify the integrity of an image file:
`pngcheck {{path/to/file.png}}`
- Check the file with [v]erbose and [c]olorized output:
`pngcheck -vc {{path/to/file.png}}`
- Display contents of [t]ext chunks and [s]earch for PNGs within a specific file:
`pngcheck -ts {{path/to/file.png}}`
- Search for, and e[x]tract embedded PNGs within a specific file:
`pngcheck -x {{path/to/file.png}}`

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@ -1,18 +0,0 @@
# renice
> Alter the scheduling priority/niceness of running processes.
> Niceness values range from -20 (most favorable to the process) to 19 (least favorable to the process).
> See also: `nice`.
> More information: <https://manned.org/renice>.
- Set the absolute priority of a running [p]rocess:
`renice {{+3}} -p {{pid}}`
- Increase/decrease the priority of all processes owned by a [u]ser:
`renice --relative {{-4}} -u {{uid|user}}`
- Set the priority of all processes that belong to a process [g]roup:
`renice --absolute {{5}} -g {{process_group}}`

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@ -1,29 +0,0 @@
# rm
> Remove files or directories.
> See also: `rmdir`.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/rm-invocation.html>.
- Remove specific files:
`rm {{path/to/file1 path/to/file2 ...}}`
- Remove specific files ignoring nonexistent ones:
`rm {{[-f|--force]}} {{path/to/file1 path/to/file2 ...}}`
- Remove specific files interactively prompting before each removal:
`rm {{[-i|--interactive]}} {{path/to/file1 path/to/file2 ...}}`
- Remove specific files printing info about each removal:
`rm {{[-v|--verbose]}} {{path/to/file1 path/to/file2 ...}}`
- Remove specific files and directories recursively:
`rm {{[-r|--recursive]}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Remove empty directories (this is considered the safe method):
`rm {{[-d|--dir]}} {{path/to/directory}}`

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@ -1,13 +0,0 @@
# rmdir
> Remove directories without files.
> See also: `rm`.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/rmdir-invocation.html>.
- Remove specific directories:
`rmdir {{path/to/directory1 path/to/directory2 ...}}`
- Remove specific nested directories recursively:
`rmdir {{[-p|--parents]}} {{path/to/directory1 path/to/directory2 ...}}`

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@ -1,24 +0,0 @@
# script
> Record all terminal output to file.
> More information: <https://manned.org/script>.
- Record a new session to a file named `typescript` in the current directory:
`script`
- Record a new session to a custom filepath:
`script {{path/to/session.out}}`
- Record a new session, appending to an existing file:
`script -a {{path/to/session.out}}`
- Record timing information (data is outputted to `stderr`):
`script -t 2> {{path/to/timing_file}}`
- Write out data as soon as it happens:
`script -f {{path/to/file}}`

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@ -1,25 +0,0 @@
# tac
> Display and concatenate files with lines in reversed order.
> See also: `cat`.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/tac-invocation.html>.
- Concatenate specific files in reversed order:
`tac {{path/to/file1 path/to/file2 ...}}`
- Display `stdin` in reversed order:
`{{cat path/to/file}} | tac`
- Use a specific separator:
`tac --separator {{,}} {{path/to/file1 path/to/file2 ...}}`
- Use a specific regex as a separator:
`tac --regex --separator {{[,;]}} {{path/to/file1 path/to/file2 ...}}`
- Use a separator before each file:
`tac --before {{path/to/file1 path/to/file2 ...}}`

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@ -1,36 +0,0 @@
# uname
> Print details about the current machine and the operating system running on it.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/uname-invocation.html>.
- Print all information:
`uname {{[-a|--all]}}`
- Print the current kernel name:
`uname {{[-s|--kernel-name]}}`
- Print the current network node host name:
`uname {{[-n|--nodename]}}`
- Print the current kernel release:
`uname {{[-r|--kernel-release]}}`
- Print the current kernel version:
`uname {{[-v|--kernel-version]}}`
- Print the current machine hardware name:
`uname {{[-m|--machine]}}`
- Print the current processor type:
`uname {{[-p|--processsor]}}`
- Print the current operating system name:
`uname {{[-o|--operating-system]}}`

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@ -1,20 +0,0 @@
# w
> Display who is logged in and their processes.
> More information: <https://www.geeksforgeeks.org/w-command-in-linux-with-examples/>.
- Display information about all users who are currently logged in:
`w`
- Display information about a specific user:
`w {{username}}`
- Display information without including the header:
`w --no-header`
- Display information without including the login, JCPU and PCPU columns:
`w --short`

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@ -1,33 +0,0 @@
# zip
> Package and compress (archive) files into a Zip archive.
> See also: `unzip`.
> More information: <https://manned.org/zip>.
- Add files/directories to a specific archive:
`zip {{[-r|--recurse-paths}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Remove files/directories from a specific archive:
`zip {{[-d|--delete]}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Archive files/directories excluding specified ones:
`zip {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}} {{-x|--exclude}} {{path/to/excluded_files_or_directories}}`
- Archive files/directories with a specific compression level (`0` - the lowest, `9` - the highest):
`zip {{[-r|--recurse-paths]}} -{{0..9}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Create an encrypted archive with a specific password:
`zip {{[-r|--recurse-paths]}} {{[-e|--encrypt]}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Archive files/directories to a multi-part split Zip archive (e.g. 3 GB parts):
`zip {{[-r|--recurse-paths]}} {{[-s|--split-size]}} {{3g}} {{path/to/compressed.zip}} {{path/to/file_or_directory1 path/to/file_or_directory2 ...}}`
- Print a specific archive contents:
`zip {{[-sf|--split-size --freshen]}} {{path/to/compressed.zip}}`

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@ -1,25 +0,0 @@
# ed
> The original Unix text editor.
> See also: `awk`, `sed`.
> More information: <https://www.gnu.org/software/ed/manual/ed_manual.html>.
- Start an interactive editor session with an empty document:
`ed`
- Start an interactive editor session with an empty document and a specific [p]rompt:
`ed -p '> '`
- Start an interactive editor session with an empty document and without diagnostics, byte counts and '!' prompt:
`ed -s`
- Edit a specific file (this shows the byte count of the loaded file):
`ed {{path/to/file}}`
- Replace a string with a specific replacement for all lines:
`,s/{{regular_expression}}/{{replacement}}/g`

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@ -4,4 +4,4 @@
- View documentation for the original command:
`tldr -p linux numfmt`
`tldr numfmt`

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@ -1,8 +0,0 @@
# readlink
> Follow symlinks and get symlink information.
> More information: <https://www.gnu.org/software/coreutils/manual/html_node/readlink-invocation.html>.
- Print the absolute path which the symlink points to:
`readlink {{path/to/symlink_file}}`