diff --git a/pages.de/osx/caffeinate.md b/pages.de/osx/caffeinate.md
index e002ddfa0f..a8a2e069d7 100644
--- a/pages.de/osx/caffeinate.md
+++ b/pages.de/osx/caffeinate.md
@@ -1,6 +1,7 @@
 # caffeinate
 
 > Hindert den Mac daran in den Schlaf-Modus zu gehen.
+> Weitere Informationen: <https://ss64.com/osx/caffeinate.html>.
 
 - Halte den Mac für 1 Stunde (3600 Sekunden) wach:
 
diff --git a/pages.es/osx/airport.md b/pages.es/osx/airport.md
index 2cffed5975..6f0d7d11b8 100644
--- a/pages.es/osx/airport.md
+++ b/pages.es/osx/airport.md
@@ -1,6 +1,7 @@
 # airport
 
 > Utilidad de configuración de red inalámbrica.
+> Más información: <https://ss64.com/osx/airport.html>.
 
 - Muestra la información del estado actual de la red inalámbrica:
 
diff --git a/pages.es/osx/apachectl.md b/pages.es/osx/apachectl.md
index 39ec472fe6..b838a92a2b 100644
--- a/pages.es/osx/apachectl.md
+++ b/pages.es/osx/apachectl.md
@@ -1,6 +1,7 @@
 # apachectl
 
 > Interfaz de control pata Apache HTTP Server para macOS.
+> Más información: <https://www.unix.com/man-page/osx/8/apachectl/>.
 
 - Inicia la tarea launchd `org.apache.httpd`:
 
diff --git a/pages.es/osx/archey.md b/pages.es/osx/archey.md
index e5d9710267..38355d8c80 100644
--- a/pages.es/osx/archey.md
+++ b/pages.es/osx/archey.md
@@ -1,6 +1,7 @@
 # archey
 
 > Herramienta sencilla para mostrar información del sistema con estilo.
+> Más información: <https://github.com/joshfinnie/archey-osx>.
 
 - Muestra información del sistema:
 
diff --git a/pages.es/osx/as.md b/pages.es/osx/as.md
index 0c344d399b..d13a61b498 100644
--- a/pages.es/osx/as.md
+++ b/pages.es/osx/as.md
@@ -2,6 +2,7 @@
 
 > Ensamblador portable GNU.
 > Principalmente destinado a ensamblar la salida de `gcc` para ser utilizada por` ld`.
+> Más información: <https://www.unix.com/man-page/osx/1/as/>.
 
 - Ensambla un archivo, escribiendo la salida en `a.out`:
 
diff --git a/pages.es/osx/asr.md b/pages.es/osx/asr.md
index 169f1965da..dbe2d9ef95 100644
--- a/pages.es/osx/asr.md
+++ b/pages.es/osx/asr.md
@@ -2,6 +2,7 @@
 
 > Restaura (copia) una imagen de disco en un volumen.
 > El nombre del comando significa Restauración de Software de Apple.
+> Más información: <https://www.unix.com/man-page/osx/8/asr/>.
 
 - Restaura una imagen de disco en un volumen:
 
diff --git a/pages.it/common/id3tag.md b/pages.it/common/id3tag.md
index 07a918b981..d9b5a6c17f 100644
--- a/pages.it/common/id3tag.md
+++ b/pages.it/common/id3tag.md
@@ -1,6 +1,7 @@
 # id3tag
 
 > Strumento per leggere, scrivere, e manipolare i tag (etichette) ID3v1 e ID3v2 di file MP3.
+> Maggiori informazioni: <https://www.systutorials.com/docs/linux/man/1-id3tag>
 
 - Imposta l'etichetta dell'artista e del titolo in un file MP3:
 
diff --git a/pages.it/osx/airport.md b/pages.it/osx/airport.md
index 379f729be4..90d8929cf6 100644
--- a/pages.it/osx/airport.md
+++ b/pages.it/osx/airport.md
@@ -1,6 +1,7 @@
 # airport
 
 > Strumento di configurazione delle reti senza fili.
+> Maggiori informazioni: <https://ss64.com/osx/airport.html>.
 
 - Mostra le informazioni relative allo stato attuale delle connessioni senza fili:
 
diff --git a/pages.it/osx/apachectl.md b/pages.it/osx/apachectl.md
index 4c9db6dd6d..bfbc7444d8 100644
--- a/pages.it/osx/apachectl.md
+++ b/pages.it/osx/apachectl.md
@@ -1,6 +1,7 @@
 # apachectl
 
 > Interfaccia di controllo del server HTTP Apache per macOS.
+> Maggiori informazioni: <https://www.unix.com/man-page/osx/8/apachectl/>.
 
 - Avvia il demone `org.apache.httpd`:
 
diff --git a/pages.it/osx/archey.md b/pages.it/osx/archey.md
index 11ae2e6309..4e7ba34176 100644
--- a/pages.it/osx/archey.md
+++ b/pages.it/osx/archey.md
@@ -1,6 +1,7 @@
 # archey
 
 > Semplice strumento per mostrare con stile le informazioni di sistema.
+> Maggiori informazioni: <https://github.com/joshfinnie/archey-osx>.
 
 - Mostra le informazioni di sistema:
 
diff --git a/pages.it/osx/as.md b/pages.it/osx/as.md
index fe5b3a6671..480109566c 100644
--- a/pages.it/osx/as.md
+++ b/pages.it/osx/as.md
@@ -2,6 +2,7 @@
 
 > Assembler GNU portabile.
 > Progettato principalmente per assemblare l'output di `gcc` ed utilizzarlo con `ld`.
+> Maggiori informazioni: <https://www.unix.com/man-page/osx/1/as/>.
 
 - Assembla un file, scrivendo l'output su a.out:
 
diff --git a/pages.it/osx/asr.md b/pages.it/osx/asr.md
index ba88367e82..0ca2a93d7d 100644
--- a/pages.it/osx/asr.md
+++ b/pages.it/osx/asr.md
@@ -2,6 +2,7 @@
 
 > Ripristina (copia) un'immagine disco dentro a un volume.
 > Il nome del comando sta per Apple Software Restore (software di ripristino Apple).
+> Maggiori informazioni: <https://www.unix.com/man-page/osx/8/asr/>.
 
 - Ripristina un'immagine disco su un volume specifico:
 
diff --git a/pages.it/osx/base64.md b/pages.it/osx/base64.md
index ad7827df7f..968e34004f 100644
--- a/pages.it/osx/base64.md
+++ b/pages.it/osx/base64.md
@@ -1,6 +1,7 @@
 # base64
 
 > Codifica e decodifica utilizzando la rappresentazione in base64.
+> Maggiori informazioni: <https://www.unix.com/man-page/osx/1/base64/>.
 
 - Codifica un file:
 
diff --git a/pages.it/osx/caffeinate.md b/pages.it/osx/caffeinate.md
index b1a7a60b67..4eef3782c7 100644
--- a/pages.it/osx/caffeinate.md
+++ b/pages.it/osx/caffeinate.md
@@ -1,6 +1,7 @@
 # caffeinate
 
 > Impedisci al mac di sospendersi.
+> Maggiori informazioni: <https://ss64.com/osx/caffeinate.html>.
 
 - Impedisci la sospensione per un'ora (3600 secondi):
 
diff --git a/pages.it/osx/diskutil.md b/pages.it/osx/diskutil.md
index 72dd9dcfd0..ba2cd8d443 100644
--- a/pages.it/osx/diskutil.md
+++ b/pages.it/osx/diskutil.md
@@ -1,6 +1,7 @@
 # diskutil
 
 > Strumento per gestire i dischi locali e i volumi.
+> Maggiori informazioni: <https://ss64.com/osx/diskutil.html>.
 
 - Mostra tutti i dischi correnti, le partizioni e i volumi montati:
 
diff --git a/pages.zh/osx/airport.md b/pages.zh/osx/airport.md
index b750d8b4e3..e6aa408962 100644
--- a/pages.zh/osx/airport.md
+++ b/pages.zh/osx/airport.md
@@ -1,6 +1,7 @@
 # airport
 
 > 无线网络配置工具。
+> 更多信息：<https://ss64.com/osx/airport.html>.
 
 - 显示当前的无线状态信息：
 
diff --git a/pages.zh/osx/apachectl.md b/pages.zh/osx/apachectl.md
index b0a187dec0..010c2a655b 100644
--- a/pages.zh/osx/apachectl.md
+++ b/pages.zh/osx/apachectl.md
@@ -1,6 +1,7 @@
 # apachectl
 
 > 用于 macOS 的 Apache HTTP Server 控制接口（工具）。
+> 更多信息：<https://www.unix.com/man-page/osx/8/apachectl/>.
 
 - 启动 org.apache.httpd 服务：
 
diff --git a/pages.zh/osx/archey.md b/pages.zh/osx/archey.md
index ef095b4c40..a7ec30c715 100644
--- a/pages.zh/osx/archey.md
+++ b/pages.zh/osx/archey.md
@@ -1,6 +1,7 @@
 # archey
 
 > 漂亮地显示简单系统信息工具。
+> 更多信息：<https://github.com/joshfinnie/archey-osx>.
 
 - 显示系统信息（彩色的）：
 
diff --git a/pages.zh/osx/as.md b/pages.zh/osx/as.md
index c3dbbe38d9..6e8f16d29c 100644
--- a/pages.zh/osx/as.md
+++ b/pages.zh/osx/as.md
@@ -2,6 +2,7 @@
 
 > 便携式 GNU 汇编程序。
 > 主要用于汇编 `gcc` 的输出以供 `ld` 使用。
+> 更多信息：<https://www.unix.com/man-page/osx/1/as/>.
 
 - 汇编文件，将输出写入 a.out:
 
diff --git a/pages.zh/osx/asr.md b/pages.zh/osx/asr.md
index c3e09d0739..6c0513fa54 100644
--- a/pages.zh/osx/asr.md
+++ b/pages.zh/osx/asr.md
@@ -2,6 +2,7 @@
 
 > 将磁盘映像还原（复制）到卷上。
 > 命令名称是 Apple Software Restore 的缩写。
+> 更多信息：<https://www.unix.com/man-page/osx/8/asr/>.
 
 - 将磁盘映像复制到目标卷：
 
diff --git a/pages.zh/osx/base64.md b/pages.zh/osx/base64.md
index fa3354f41c..76a6ec03b3 100644
--- a/pages.zh/osx/base64.md
+++ b/pages.zh/osx/base64.md
@@ -1,6 +1,7 @@
 # base64
 
 > 使用 Base64 来进行编码和解码。
+> 更多信息：<https://www.unix.com/man-page/osx/1/base64/>.
 
 - 编码目标文件：
 
diff --git a/pages.zh/osx/caffeinate.md b/pages.zh/osx/caffeinate.md
index 4e6577bd64..c7afa04cd7 100644
--- a/pages.zh/osx/caffeinate.md
+++ b/pages.zh/osx/caffeinate.md
@@ -1,6 +1,7 @@
 # caffeinate
 
 > 防止 Mac 进入休眠模式。
+> 更多信息：<https://ss64.com/osx/caffeinate.html>.
 
 - 防止进入休眠模式 , 1 小时内（3600 秒）：
 
diff --git a/pages.zh/osx/cal.md b/pages.zh/osx/cal.md
index 655e02d6fc..bf522134fc 100644
--- a/pages.zh/osx/cal.md
+++ b/pages.zh/osx/cal.md
@@ -1,6 +1,7 @@
 # cal
 
 > 打印日历信息。
+> 更多信息：<https://ss64.com/osx/cal.html>.
 
 - 打印本月日历：
 
diff --git a/pages.zh/osx/carthage.md b/pages.zh/osx/carthage.md
index 1e423521e1..f9b630597d 100644
--- a/pages.zh/osx/carthage.md
+++ b/pages.zh/osx/carthage.md
@@ -1,6 +1,7 @@
 # carthage
 
 > Cocoa 应用程序的依赖性管理工具。
+> 更多信息：<https://github.com/Carthage/Carthage>.
 
 - 下载 Cartfile 中提到的所有依赖项的最新版本，并编译它们：
 
diff --git a/pages.zh/osx/chflags.md b/pages.zh/osx/chflags.md
index 14092d77e9..cf6d301617 100644
--- a/pages.zh/osx/chflags.md
+++ b/pages.zh/osx/chflags.md
@@ -1,6 +1,7 @@
 # chflags
 
 > 更改文件或文件夹的标志。
+> 更多信息：<https://ss64.com/osx/chflags.html>.
 
 - 给文件设置 hidden（隐藏）标签：
 
diff --git a/pages.zh/osx/codesign.md b/pages.zh/osx/codesign.md
index 68342239cd..0493b9c059 100644
--- a/pages.zh/osx/codesign.md
+++ b/pages.zh/osx/codesign.md
@@ -1,6 +1,7 @@
 # codesign
 
 > 为 macOS 的应用程序签名。
+> 更多信息：<https://www.unix.com/man-page/osx/1/codesign/>.
 
 - 用证书签名：
 
diff --git a/pages.zh/osx/compgen.md b/pages.zh/osx/compgen.md
index 80550706fe..717e75159a 100644
--- a/pages.zh/osx/compgen.md
+++ b/pages.zh/osx/compgen.md
@@ -1,6 +1,7 @@
 # compgen
 
 > 用于在 bash 中自动完成的内置命令，按两次 tab 键即可调用该命令。
+> 更多信息：<https://www.cyberciti.biz/open-source/command-line-hacks/compgen-linux-command/>.
 
 - 显示所有可以执行的命令：
 
diff --git a/pages.zh/osx/date.md b/pages.zh/osx/date.md
index eb94396473..52f2fbad2a 100644
--- a/pages.zh/osx/date.md
+++ b/pages.zh/osx/date.md
@@ -1,6 +1,7 @@
 # date
 
 > 设置或显示系统日期。
+> 更多信息：<https://ss64.com/osx/date.html>.
 
 - 使用默认区域设置的格式显示当前日期 :
 
diff --git a/pages.zh/osx/dd.md b/pages.zh/osx/dd.md
index 103e8aced0..914097af2a 100644
--- a/pages.zh/osx/dd.md
+++ b/pages.zh/osx/dd.md
@@ -1,6 +1,7 @@
 # dd
 
 > 转换并复制文件。
+> 更多信息：<https://ss64.com/osx/dd.html>.
 
 - 从 isohybrid 文件（如 archlinux-xxx.iso）制作可用于引导系统启动的 USB 驱动器：
 
diff --git a/pages.zh/osx/diskutil.md b/pages.zh/osx/diskutil.md
index dd923b78cc..3f6af9be7c 100644
--- a/pages.zh/osx/diskutil.md
+++ b/pages.zh/osx/diskutil.md
@@ -1,6 +1,7 @@
 # diskutil
 
 > 用于管理本地磁盘和卷的实用程序。
+> 更多信息：<https://ss64.com/osx/diskutil.html>.
 
 - 列出所有当前可用的磁盘、分区和已装入的卷：
 
diff --git a/pages.zh/osx/ditto.md b/pages.zh/osx/ditto.md
index a1582b9058..80307ed8fc 100644
--- a/pages.zh/osx/ditto.md
+++ b/pages.zh/osx/ditto.md
@@ -1,6 +1,7 @@
 # ditto
 
 > 复制文件和目录。
+> 更多信息：<https://ss64.com/osx/ditto.html>.
 
 - 用源目录的内容覆盖目标目录的内容：
 
diff --git a/pages.zh/osx/drutil.md b/pages.zh/osx/drutil.md
index b609f07990..3c246885a7 100644
--- a/pages.zh/osx/drutil.md
+++ b/pages.zh/osx/drutil.md
@@ -1,6 +1,7 @@
 # drutil
 
 > 与 DVD 刻录机交互。
+> 更多信息：<https://ss64.com/osx/drutil.html>.
 
 - 从驱动器中弹出磁盘：
 
diff --git a/pages.zh/osx/du.md b/pages.zh/osx/du.md
index 1d1a7fc804..6112d56905 100644
--- a/pages.zh/osx/du.md
+++ b/pages.zh/osx/du.md
@@ -1,6 +1,7 @@
 # du
 
 > 磁盘使用率：估计和汇总文件和目录空间使用率。
+> 更多信息：<https://ss64.com/osx/du.html>.
 
 - 以给定单位（kb/mb/gb）列出目录和所有子目录的大小：
 
diff --git a/pages.zh/osx/duti.md b/pages.zh/osx/duti.md
index 3b646a69ab..b6bfab7ecd 100644
--- a/pages.zh/osx/duti.md
+++ b/pages.zh/osx/duti.md
@@ -1,6 +1,7 @@
 # duti
 
 > 在 macOS 上为文档类型和网页设置默认打开的应用程序。
+> 更多信息：<https://github.com/moretension/duti>.
 
 - 将 Safari 设置为 HTML 文档的默认打开程序：
 
diff --git a/pages.zh/osx/eval.md b/pages.zh/osx/eval.md
index 4263799ac8..b33f1d61ab 100644
--- a/pages.zh/osx/eval.md
+++ b/pages.zh/osx/eval.md
@@ -1,6 +1,7 @@
 # eval
 
 > 在当前 shell 中以单个命令的形式执行参数，并返回其结果。
+> 更多信息：<https://ss64.com/osx/eval.html>.
 
 - 使用 'foo' 做为参数调用 `echo`:
 
diff --git a/pages.zh/osx/export.md b/pages.zh/osx/export.md
index 3215e40559..7ac6dfc241 100644
--- a/pages.zh/osx/export.md
+++ b/pages.zh/osx/export.md
@@ -1,6 +1,7 @@
 # export
 
 > 命令为当前 shell 中的子进程进行环境变量设置。
+> 更多信息：<https://ss64.com/osx/export.html>.
 
 - 设置为新的环境变量：
 
diff --git a/pages/common/ftp.md b/pages/common/ftp.md
index b159400099..cbe424e03f 100644
--- a/pages/common/ftp.md
+++ b/pages/common/ftp.md
@@ -1,6 +1,7 @@
 # ftp
 
 > Tools to interact with a server via File Transfer Protocol.
+> More information: <https://manned.org/ftp>.
 
 - Connect to an FTP server:
 
diff --git a/pages/common/host.md b/pages/common/host.md
index ecd88fc2f4..39fa4c1af5 100644
--- a/pages/common/host.md
+++ b/pages/common/host.md
@@ -1,6 +1,7 @@
 # host
 
 > Lookup Domain Name Server.
+> More information: <https://manned.org/host>.
 
 - Lookup A, AAAA, and MX records of a domain:
 
diff --git a/pages/common/hr.md b/pages/common/hr.md
index 52e5fedd19..909972730c 100644
--- a/pages/common/hr.md
+++ b/pages/common/hr.md
@@ -1,6 +1,7 @@
 # hr
 
 > Print a horizontal rule in the terminal.
+> More information: <https://github.com/LuRsT/hr>.
 
 - Print a horizontal rule:
 
diff --git a/pages/common/iconv.md b/pages/common/iconv.md
index 40baed855b..c13357f491 100644
--- a/pages/common/iconv.md
+++ b/pages/common/iconv.md
@@ -1,6 +1,7 @@
 # iconv
 
 > Converts text from one encoding to another.
+> More information: <https://manned.org/iconv>.
 
 - Convert file to a specific encoding, and print to stdout:
 
diff --git a/pages/common/id3tag.md b/pages/common/id3tag.md
index 7494dc75ba..ad68e6825c 100644
--- a/pages/common/id3tag.md
+++ b/pages/common/id3tag.md
@@ -1,6 +1,7 @@
 # id3tag
 
 > Tool for reading, writing, and manipulating ID3v1 and ID3v2 tags of MP3 files.
+> More information: <https://manned.org/id3tag>.
 
 - Set artist and title tag of an MP3 file:
 
diff --git a/pages/common/if.md b/pages/common/if.md
index 3154b2c233..0f16297d9a 100644
--- a/pages/common/if.md
+++ b/pages/common/if.md
@@ -2,6 +2,7 @@
 
 > Simple shell conditional.
 > See also: `test`, `[`.
+> More information: <https://www.tcl.tk/man/tcl8.6.11/TclCmd/if.html>.
 
 - Execute two different commands based on a condition:
 
diff --git a/pages/common/import.md b/pages/common/import.md
index 5001bbf8ec..75468662e9 100644
--- a/pages/common/import.md
+++ b/pages/common/import.md
@@ -2,6 +2,7 @@
 
 > Capture some or all of an X server screen, and save the image to a file.
 > Part of the ImageMagick library.
+> More information: <https://imagemagick.org/script/import.php>.
 
 - Capture the entire X server screen in the PostScript image format:
 
diff --git a/pages/common/ionice.md b/pages/common/ionice.md
index 2b0115a03d..c085b81da6 100644
--- a/pages/common/ionice.md
+++ b/pages/common/ionice.md
@@ -3,6 +3,7 @@
 > Get or set program I/O scheduling class and priority.
 > Scheduling classes: 1 (realtime), 2 (best-effort), 3 (idle).
 > Priority levels: 0 (the highest) - 7 (the lowest).
+> More information: <https://manned.org/ionice>.
 
 - Set I/O scheduling class of a running process:
 
diff --git a/pages/common/ipcs.md b/pages/common/ipcs.md
index 2637c9534f..126548646e 100644
--- a/pages/common/ipcs.md
+++ b/pages/common/ipcs.md
@@ -1,6 +1,7 @@
 # ipcs
 
 > Display information about resources used in IPC (Inter-process Communication).
+> More information: <https://manned.org/ipcs>.
 
 - Specific information about the Message Queue which has the ID 32768:
 
diff --git a/pages/osx/afinfo.md b/pages/osx/afinfo.md
index 477bf3214c..f09e239c13 100644
--- a/pages/osx/afinfo.md
+++ b/pages/osx/afinfo.md
@@ -2,6 +2,7 @@
 
 > Audio file metadata parser for OS X.
 > Built-in command of OS X.
+> More information: <https://ss64.com/osx/afinfo.html>.
 
 - Display info of a given audio file:
 
diff --git a/pages/osx/afplay.md b/pages/osx/afplay.md
index 12a58d9610..02d5f879bd 100644
--- a/pages/osx/afplay.md
+++ b/pages/osx/afplay.md
@@ -1,6 +1,7 @@
 # afplay
 
 > Command-line audio player.
+> More information: <https://ss64.com/osx/afplay.html>.
 
 - Play a sound file (waits until playback ends):
 
diff --git a/pages/osx/airport.md b/pages/osx/airport.md
index bd3625b92e..99a05458ac 100644
--- a/pages/osx/airport.md
+++ b/pages/osx/airport.md
@@ -1,6 +1,7 @@
 # airport
 
 > Wireless network configuration utility.
+> More information: <https://ss64.com/osx/airport.html>.
 
 - Show current wireless status information:
 
diff --git a/pages/osx/apachectl.md b/pages/osx/apachectl.md
index 2cf39db448..410db72ce0 100644
--- a/pages/osx/apachectl.md
+++ b/pages/osx/apachectl.md
@@ -1,6 +1,7 @@
 # apachectl
 
 > Apache HTTP Server control interface for macOS.
+> More information: <https://www.unix.com/man-page/osx/8/apachectl/>.
 
 - Start the `org.apache.httpd` launchd job:
 
diff --git a/pages/osx/arch.md b/pages/osx/arch.md
index e4af9f3d76..7a33973cd9 100644
--- a/pages/osx/arch.md
+++ b/pages/osx/arch.md
@@ -2,6 +2,7 @@
 
 > Display the name of the system architecture, or run a command under a different architecture.
 > See also `uname`.
+> More information: <https://www.unix.com/man-page/osx/1/arch/>.
 
 - Display the system's architecture:
 
diff --git a/pages/osx/archey.md b/pages/osx/archey.md
index a15250491d..752d5b549d 100644
--- a/pages/osx/archey.md
+++ b/pages/osx/archey.md
@@ -1,6 +1,7 @@
 # archey
 
 > Simple tool for stylishly displaying system information.
+> More information: <https://github.com/joshfinnie/archey-osx>.
 
 - Show system information:
 
diff --git a/pages/osx/as.md b/pages/osx/as.md
index 9f9d95c19f..9f94b0af02 100644
--- a/pages/osx/as.md
+++ b/pages/osx/as.md
@@ -2,6 +2,7 @@
 
 > Portable GNU assembler.
 > Primarily intended to assemble output from `gcc` to be used by `ld`.
+> More information: <https://www.unix.com/man-page/osx/1/as/>.
 
 - Assemble a file, writing the output to `a.out`:
 
diff --git a/pages/osx/asr.md b/pages/osx/asr.md
index 2bcd24c60d..3c221d3b06 100644
--- a/pages/osx/asr.md
+++ b/pages/osx/asr.md
@@ -2,6 +2,7 @@
 
 > Restore (copy) a disk image onto a volume.
 > The command name stands for Apple Software Restore.
+> More information: <https://www.unix.com/man-page/osx/8/asr/>.
 
 - Restore a disk image to a target volume:
 
diff --git a/pages/osx/base64.md b/pages/osx/base64.md
index 9487bba476..2f17ffa578 100644
--- a/pages/osx/base64.md
+++ b/pages/osx/base64.md
@@ -1,6 +1,7 @@
 # base64
 
 > Encode and decode using Base64 representation.
+> More information: <https://www.unix.com/man-page/osx/1/base64/>.
 
 - Encode a file:
 
diff --git a/pages/osx/caffeinate.md b/pages/osx/caffeinate.md
index 12893e22d4..0a2751f47e 100644
--- a/pages/osx/caffeinate.md
+++ b/pages/osx/caffeinate.md
@@ -1,6 +1,7 @@
 # caffeinate
 
 > Prevent macOS from sleeping.
+> More information: <https://ss64.com/osx/caffeinate.html>.
 
 - Prevent from sleeping for 1 hour (3600 seconds):
 
diff --git a/pages/osx/cal.md b/pages/osx/cal.md
index 00e9246d21..b5bb6f0a81 100644
--- a/pages/osx/cal.md
+++ b/pages/osx/cal.md
@@ -1,6 +1,7 @@
 # cal
 
 > Prints calendar information.
+> More information: <https://ss64.com/osx/cal.html>.
 
 - Display a calendar for the current month:
 
diff --git a/pages/osx/carthage.md b/pages/osx/carthage.md
index 257183547e..613541ee35 100644
--- a/pages/osx/carthage.md
+++ b/pages/osx/carthage.md
@@ -1,6 +1,7 @@
 # carthage
 
 > A dependency management tool for Cocoa applications.
+> More information: <https://github.com/Carthage/Carthage>.
 
 - Download the latest version of all dependencies mentioned in Cartfile, and build them:
 
diff --git a/pages/osx/chflags.md b/pages/osx/chflags.md
index 5b0b75c496..f71ae4c795 100644
--- a/pages/osx/chflags.md
+++ b/pages/osx/chflags.md
@@ -1,6 +1,7 @@
 # chflags
 
 > Change file or directory flags.
+> More information: <https://ss64.com/osx/chflags.html>.
 
 - Set the `hidden` flag for a file:
 
diff --git a/pages/osx/codesign.md b/pages/osx/codesign.md
index d41a54457a..abc3f163a1 100644
--- a/pages/osx/codesign.md
+++ b/pages/osx/codesign.md
@@ -1,6 +1,7 @@
 # codesign
 
 > Create and manipulate code signatures for macOS.
+> More information: <https://www.unix.com/man-page/osx/1/codesign/>.
 
 - Sign an application with a certificate:
 
diff --git a/pages/osx/compgen.md b/pages/osx/compgen.md
index c41c9455f9..64dcbc29ce 100644
--- a/pages/osx/compgen.md
+++ b/pages/osx/compgen.md
@@ -1,6 +1,7 @@
 # compgen
 
 > A built-in command for auto-completion in Bash, which is called on pressing TAB key twice.
+> More information: <https://www.cyberciti.biz/open-source/command-line-hacks/compgen-linux-command/>.
 
 - List all commands that you could run:
 
diff --git a/pages/osx/date.md b/pages/osx/date.md
index 92e0971318..3b962bcaed 100644
--- a/pages/osx/date.md
+++ b/pages/osx/date.md
@@ -1,6 +1,7 @@
 # date
 
 > Set or display the system date.
+> More information: <https://ss64.com/osx/date.html>.
 
 - Display the current date using the default locale's format:
 
diff --git a/pages/osx/dd.md b/pages/osx/dd.md
index 1b467caa5a..bc1dd6856c 100644
--- a/pages/osx/dd.md
+++ b/pages/osx/dd.md
@@ -1,6 +1,7 @@
 # dd
 
 > Convert and copy a file.
+> More information: <https://ss64.com/osx/dd.html>.
 
 - Make a bootable USB drive from an isohybrid file (such like `archlinux-xxx.iso`):
 
diff --git a/pages/osx/diskutil.md b/pages/osx/diskutil.md
index 5994493eb2..226138f5ff 100644
--- a/pages/osx/diskutil.md
+++ b/pages/osx/diskutil.md
@@ -1,6 +1,7 @@
 # diskutil
 
 > Utility to manage local disks and volumes.
+> More information: <https://ss64.com/osx/diskutil.html>.
 
 - List all currently available disks, partitions and mounted volumes:
 
diff --git a/pages/osx/ditto.md b/pages/osx/ditto.md
index 28f9fc6e50..3025b2732e 100644
--- a/pages/osx/ditto.md
+++ b/pages/osx/ditto.md
@@ -1,6 +1,7 @@
 # ditto
 
 > Copy files and directories.
+> More information: <https://ss64.com/osx/ditto.html>.
 
 - Overwrite contents of destination directory with contents of source directory:
 
diff --git a/pages/osx/drutil.md b/pages/osx/drutil.md
index 3c96799e42..dbd9bd77c6 100644
--- a/pages/osx/drutil.md
+++ b/pages/osx/drutil.md
@@ -1,6 +1,7 @@
 # drutil
 
 > Interact with DVD burners.
+> More information: <https://ss64.com/osx/drutil.html>.
 
 - Eject a disk from the drive:
 
diff --git a/pages/osx/du.md b/pages/osx/du.md
index 5d7a69c1ef..70279d5875 100644
--- a/pages/osx/du.md
+++ b/pages/osx/du.md
@@ -1,6 +1,7 @@
 # du
 
 > Disk usage: estimate and summarize file and directory space usage.
+> More information: <https://ss64.com/osx/du.html>.
 
 - List the sizes of a directory and any subdirectories, in the given unit (KB/MB/GB):
 
diff --git a/pages/osx/duti.md b/pages/osx/duti.md
index 8bc84e3e6d..781ff1519f 100644
--- a/pages/osx/duti.md
+++ b/pages/osx/duti.md
@@ -1,6 +1,7 @@
 # duti
 
 > Set default applications for document types and URL schemes on macOS.
+> More information: <https://github.com/moretension/duti>.
 
 - Set Safari as the default handler for HTML documents:
 
diff --git a/pages/osx/eval.md b/pages/osx/eval.md
index ee1135a91d..27e0f8b5e1 100644
--- a/pages/osx/eval.md
+++ b/pages/osx/eval.md
@@ -1,6 +1,7 @@
 # eval
 
 > Execute arguments as a single command in the current shell and return its result.
+> More information: <https://ss64.com/osx/eval.html>.
 
 - Call `echo` with the "foo" argument:
 
diff --git a/pages/osx/export.md b/pages/osx/export.md
index c09481e8e2..5095325579 100644
--- a/pages/osx/export.md
+++ b/pages/osx/export.md
@@ -1,6 +1,7 @@
 # export
 
 > Command to mark shell variables in the current environment to be exported with any newly forked child processes.
+> More information: <https://ss64.com/osx/export.html>.
 
 - Set a new environment variable:
 
diff --git a/pages/osx/fc.md b/pages/osx/fc.md
index 7e6c464104..81a0c82c1b 100644
--- a/pages/osx/fc.md
+++ b/pages/osx/fc.md
@@ -1,6 +1,7 @@
 # fc
 
 > Open the most recent command and edit it.
+> More information: <https://ss64.com/osx/fc.html>.
 
 - Open in the default system editor:
 
diff --git a/pages/osx/fdesetup.md b/pages/osx/fdesetup.md
index 344a340aaf..f664c15979 100644
--- a/pages/osx/fdesetup.md
+++ b/pages/osx/fdesetup.md
@@ -1,6 +1,7 @@
 # fdesetup
 
 > Set and retrieve FileVault related information.
+> Main information: <https://www.unix.com/man-page/mojave/8/fdesetup/>.
 
 - List current FileVault enabled users:
 
diff --git a/pages/osx/feh.md b/pages/osx/feh.md
index 3d3464c917..e4f0cd1015 100644
--- a/pages/osx/feh.md
+++ b/pages/osx/feh.md
@@ -1,6 +1,7 @@
 # feh
 
 > Lightweight image viewing utility.
+> More information: <https://github.com/derf/feh>.
 
 - View images locally or using a URL:
 
diff --git a/pages/osx/file.md b/pages/osx/file.md
index 841d703d37..8119644672 100644
--- a/pages/osx/file.md
+++ b/pages/osx/file.md
@@ -1,6 +1,7 @@
 # file
 
 > Determine file type.
+> More information: <https://github.com/file/file>.
 
 - Give a description of the type of the specified file. Works fine for files with no file extension:
 
diff --git a/pages/osx/fsck.md b/pages/osx/fsck.md
index 6c8a4931ef..a93da777d4 100644
--- a/pages/osx/fsck.md
+++ b/pages/osx/fsck.md
@@ -2,6 +2,7 @@
 
 > Check the integrity of a filesystem or repair it. The filesystem should be unmounted at the time the command is run.
 > It is a wrapper that calls `fsck_hfs`, `fsck_apfs`, `fsck_msdos`, `fsck_exfat`, and `fsck_udf` as needed.
+> More information: <https://ss64.com/osx/fsck.html>.
 
 - Check filesystem `/dev/sdX`, reporting any damaged blocks:
 
diff --git a/pages/osx/getfileinfo.md b/pages/osx/getfileinfo.md
index 02681db99c..611703f882 100644
--- a/pages/osx/getfileinfo.md
+++ b/pages/osx/getfileinfo.md
@@ -1,6 +1,7 @@
 # GetFileInfo
 
 > Get information about a file in an HFS+ directory.
+> More information: <https://www.unix.com/man-page/osx/1/GetFileInfo/>.
 
 - Display information about a given file:
 
diff --git a/pages/osx/hdiutil.md b/pages/osx/hdiutil.md
index 9d1107067a..e2ca7c6ee8 100644
--- a/pages/osx/hdiutil.md
+++ b/pages/osx/hdiutil.md
@@ -1,6 +1,7 @@
 # hdiutil
 
 > Utility to create and manage disk images.
+> More information: <https://ss64.com/osx/hdiutil.html>.
 
 - Mount an image:
 
diff --git a/pages/osx/head.md b/pages/osx/head.md
index 993a1f8f1d..0e5ec35d74 100644
--- a/pages/osx/head.md
+++ b/pages/osx/head.md
@@ -1,6 +1,7 @@
 # head
 
 > Output the first part of files.
+> More information: <https://ss64.com/osx/head.html>.
 
 - Output the first few lines of a file:
 
diff --git a/pages/osx/hexdump.md b/pages/osx/hexdump.md
index b0463261cf..1b813d7b7d 100644
--- a/pages/osx/hexdump.md
+++ b/pages/osx/hexdump.md
@@ -1,6 +1,7 @@
 # hexdump
 
 > An ASCII, decimal, hexadecimal, octal dump.
+> More information: <https://www.unix.com/man-page/osx/1/HEXDUMP>.
 
 - Print the hexadecimal representation of a file:
 
diff --git a/pages/osx/hostname.md b/pages/osx/hostname.md
index 88d0981d6b..139b473d4e 100644
--- a/pages/osx/hostname.md
+++ b/pages/osx/hostname.md
@@ -1,6 +1,7 @@
 # hostname
 
 > Show or set the system's host name.
+> More information: <https://www.tutorialspoint.com/unix_commands/hostname.htm>.
 
 - Show current host name:
 
diff --git a/pages/osx/imgcat.md b/pages/osx/imgcat.md
index f8ca8d71e6..4b76e0be7c 100644
--- a/pages/osx/imgcat.md
+++ b/pages/osx/imgcat.md
@@ -2,6 +2,7 @@
 
 > A utility to display images directly on the command-line.
 > Requires a compatible terminal such as iTerm2.
+> More information: <https://github.com/danielgatis/imgcat>.
 
 - Display an image on the command-line: