lckdo, mispipe, pee, vidir, vipe, zrun: add pages; flock: edit page (#12113)

* lckdo, mispipe, pee, vidir, vipe, zrun: add pages

* Apply suggestions from code review

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

* fix errors

* flock: move page

---------

Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

pages/common/lckdo.md

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+# lckdo
+
+> This command is deprecated and superseded by `flock`.
+> More information: <https://joeyh.name/code/moreutils/>.
+
+- View documentation for the recommended replacement:
+
+`tldr flock`

pages/common/mispipe.md

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+# mispipe
+
+> Pipe two commands and return the exit status of the first command.
+> More information: <https://joeyh.name/code/moreutils/>.
+
+- Pipe two commands and return the exit status of the first command:
+
+`mispipe {{command1}} {{command2}}`

pages/common/pee.md

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+# pee
+
+> Tee `stdin` to pipes.
+> See also: `tee`.
+> More information: <https://joeyh.name/code/moreutils/>.
+
+- Run each command, providing each one with a distinct copy of `stdin`:
+
+`pee {{command1 command2 ...}}`
+
+- Write a copy of `stdin` to `stdout` (like `tee`):
+
+`pee cat {{command1 command2 ...}}`
+
+- Immediately terminate upon SIGPIPEs and write errors:
+
+`pee --no-ignore-sigpipe --no-ignore-write-errors {{command1 command2 ...}}`

pages/common/vidir.md

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+# vidir
+
+> Edit directories in a text editor.
+> More information: <https://joeyh.name/code/moreutils/>.
+
+- Edit the contents of the specified directories:
+
+`vidir {{path/to/directory1 path/to/directory2 ...}}`
+
+- Display each action taken by the program:
+
+`vidir --verbose {{path/to/directory1 path/to/directory2 ...}}`
+
+- Edit the contents of current directory:
+
+`vidir`
+
+- Use the specified text editor:
+
+`EDITOR={{vim}} vidir {{path/to/directory1 path/to/directory2 ...}}`
+
+- Read a list of files to edit from `stdin`:
+
+`{{command}} | vidir -`

pages/common/vipe.md

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+# vipe
+
+> Run a text editor in the middle of a UNIX pipeline.
+> More information: <https://joeyh.name/code/moreutils/>.
+
+- Edit the output of `command1` before piping it into `command2`:
+
+`{{command1}} | vipe | {{command2}}`
+
+- Buffer the output of `command1` in a temporary file with the specified file extension in order to aid syntax highlighting:
+
+`{{command1}} | vipe --suffix {{json}} | {{command2}}`
+
+- Use the specified text editor:
+
+`{{command1}} | EDITOR={{vim}} vipe | {{command2}}`

pages/common/zrun.md

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+# zrun
+
+> Transparently uncompress argument files to a command.
+> More information: <https://joeyh.name/code/moreutils/>.
+
+- Run the specified command with uncompressed versions of the compressed argument files:
+
+`zrun {{cat path/to/file1.gz path/to/file2.bz2 ...}}`