Base: Document find(1)

Author: https://github.com/bugaevc
Commit: https://github.com/SerenityOS/serenity/commit/4643f51eaaa
Pull-request: https://github.com/SerenityOS/serenity/pull/2503
Reviewed-by: https://github.com/alimpfard

Base/usr/share/man/man1/find.md

@@ -0,0 +1,69 @@
+## Name
+
+find - recursively search for files
+
+## Synopsis
+
+```**sh
+$ find [-L] [root-path] [commands...]
+```
+
+## Description
+
+`find` recursively traverses the file hierarchy starting at the given root path
+(or at the current working directory if the root path is not specified), and
+evaluates the given commands for each found file. The commands can be used to
+both filter the set of files and to perform actions on them.
+
+If no *action command* (`-print`, `-print0`, or `-exec`) is found among the
+specified commands, a `-print` command is implicitly appended.
+
+## Options
+
+* `-L`: Follow symlinks
+
+## Commands
+
+* `-type t`: Checks if the file is of the specified type, which must be one of
+  `b` (for block device), `c` (character device), `d` (directory), `l` (symbolic
+  link), `p` (FIFO), `f` (regular file), and `s` (socket).
+* `-links number`: Checks if the file has the given number of hard links.
+* `-user name`: Checks if the file is owned by the given user. Instead of a user
+  name, a numerical UID may be specified.
+* `-group name`: Checks if the file is owned by the given group. Instead of a
+  group name, a numerical GID may be specified.
+* `-size number[c]`: Checks if the file has the given size in 512-byte blocks,
+  rounded up. If the size is followed by the `c` character, checks if the file
+  has the given size in bytes.
+* `-print`: Outputs the file path, followed by a newline. Always evaluates to
+  true.
+* `-print0`: Outputs the file path, followed by a zero byte. Always evaluates to
+  true.
+* `-exec command... ;`: Executes the given command with any arguments provided,
+  substituting the file path for any arguments specified as `{}`. The list of
+  arguments must be terminated by a semicolon. Checks if the command exits
+  successfully.
+
+The commands can be combined to form complex expressions using the following
+operators:
+
+* `command1 -o command2`: Logical OR.
+* `command1 -a command2`, `command1 command2`: Logical AND.
+* `( command )`: Groups commands together for operator priority purposes.
+
+## Examples
+
+```sh
+# Output a tree of paths rooted at the current directory:
+$ find
+# Output only directories:
+$ find -type d
+# Remove all sockets and any files owned by anon in /tmp:
+$ find /tmp "(" -type s -o -user anon ")" -exec rm "{}" ";"
+# Concatenate files with weird characters in their names:
+$ find -type f -print0 | xargs -0 cat
+```
+
+## See also
+
+* [`xargs`(1)](xargs.md)

Base/usr/share/man/man1/xargs.md

@@ -45,3 +45,7 @@ $ xargs -a list-of-files-to-delete --verbose rm
 $ xargs -a list-of-moves -L 2 mv
 $ xargs -a stuff --null -s 1024
 ```
+
+## See also
+
+* [`find`(1)](find.md)