linux/g*: add option placeholders and mnemonics (#16999)

pages/linux/gdebi.md

@@ -1,7 +1,7 @@
 # gdebi
 
 > Easily install `.deb` files.
-> More information: <https://www.commandlinux.com/man-page/man1/gdebi.1.html>.
+> More information: <https://manned.org/gdebi>.
 
 - Install local `.deb` packages resolving and installing its dependencies:
 
@@ -9,15 +9,15 @@
 
 - Do not show progress information:
 
-`gdebi {{path/to/package.deb}} --quiet`
+`gdebi {{path/to/package.deb}} {{[-q|--quiet]}}`
 
 - Set an APT configuration option:
 
-`gdebi {{path/to/package.deb}} --option={{APT_OPTS}}`
+`gdebi {{path/to/package.deb}} {{[-o|--option]}} {{APT_OPTS}}`
 
 - Use alternative root dir:
 
-`gdebi {{path/to/package.deb}} --root={{path/to/root_dir}}`
+`gdebi {{path/to/package.deb}} --root {{path/to/root_dir}}`
 
 - Display version:
 

pages/linux/gnome-screenshot.md

@@ -9,27 +9,27 @@
 
 - Take a screenshot and save it to the named file location:
 
-`gnome-screenshot --file {{path/to/file}}`
+`gnome-screenshot {{[-f|--file]}} {{path/to/file}}`
 
 - Take a screenshot and save it to the clipboard:
 
-`gnome-screenshot --clipboard`
+`gnome-screenshot {{[-c|--clipboard]}}`
 
 - Take a screenshot after the specified number of seconds:
 
-`gnome-screenshot --delay {{5}}`
+`gnome-screenshot {{[-d|--delay]}} {{5}}`
 
 - Launch the GNOME Screenshot GUI:
 
-`gnome-screenshot --interactive`
+`gnome-screenshot {{[-i|--interactive]}}`
 
 - Take a screenshot of the current window and save it to the specified file location:
 
-`gnome-screenshot --window --file {{path/to/file}}`
+`gnome-screenshot {{[-w|--window]}} {{[-f|--file]}} {{path/to/file}}`
 
 - Take a screenshot after the specified number of seconds and save it to the clipboard:
 
-`gnome-screenshot --delay {{10}} --clipboard`
+`gnome-screenshot {{[-d|--delay]}} {{10}} {{[-c|--clipboard]}}`
 
 - Display the version:
 

pages/linux/growpart.md

@@ -9,4 +9,4 @@
 
 - Show what modifications would be made when growing partition `n` in a disk image:
 
-`growpart --dry-run {{/path/to/disk.img}} {{n}}`
+`growpart {{[-N|--dry-run]}} {{/path/to/disk.img}} {{n}}`

pages/linux/grub-bios-setup.md

@@ -10,8 +10,8 @@
 
 - Install even if problems are detected:
 
-`grub-bios-setup --force {{/dev/sdX}}`
+`grub-bios-setup {{[-f|--force]}} {{/dev/sdX}}`
 
 - Install GRUB in a specific directory:
 
-`grub-bios-setup --directory={{/boot/grub}} {{/dev/sdX}}`
+`grub-bios-setup {{[-d|--directory]}} {{/boot/grub}} {{/dev/sdX}}`

pages/linux/gummy.md

@@ -5,7 +5,7 @@
 
 - Set the screen temperature to 3000K:
 
-`gummy --temperature {{3000}}`
+`gummy {{[-t|--temperature]}} {{3000}}`
 
 - Set the screen backlight to 50%:
 
@@ -13,16 +13,16 @@
 
 - Set the screen pixel brightness to 45%:
 
-`gummy --brightness {{45}}`
+`gummy {{[-b|--brightness]}} {{45}}`
 
 - Increase current screen pixel brightness by 10%:
 
-`gummy --brightness {{+10}}`
+`gummy {{[-b|--brightness]}} {{+10}}`
 
 - Decrease current screen pixel brightness by 10%:
 
-`gummy --brightness {{-10}}`
+`gummy {{[-b|--brightness]}} {{-10}}`
 
 - Set the temperature and pixel brightness for the second screen:
 
-`gummy --screen {{1}} --temperature {{3800}} --brightness {{65}}`
+`gummy {{[-s|--screen]}} {{1}} {{[-t|--temperature]}} {{3800}} {{[-b|--brightness]}} {{65}}`

pages/linux/gzexe.md

@@ -8,6 +8,6 @@
 
 `gzexe {{path/to/executable}}`
 
-- Decompress a compressed executable in-place (i.e. convert the shell script back to an uncompressed binary):
+- [d]ecompress a compressed executable in-place (i.e. convert the shell script back to an uncompressed binary):
 
 `gzexe -d {{path/to/compressed_executable}}`