Update cheatsheets

tldr/linux/exch

@@ -0,0 +1,13 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# exch
+
+> Swap the filepaths and filenames of two files.
+> More information: <https://manned.org/exch>.
+
+- Swap filepaths:
+
+`exch {{path/to/file1}} {{path/to/file2}}`

tldr/linux/lsfd

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# lsfd
+
+> List open files and the corresponding processes in Linux.
+> More information: <https://manned.org/lsfd>.
+
+- List all open file descriptors:
+
+`lsfd`
+
+- List all files kept open by a specific program:
+
+`lsfd -Q 'PID == {{process_ID}}'`
+
+- Check what program has a specific file open:
+
+`lsfd -Q "NAME == '{{/path/to/file}}'"`
+
+- List open IPv4 or IPv6 sockets:
+
+`lsfd -i{{4|6}}`

tldr/linux/pacman-q

@@ -0,0 +1,12 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pacman -Q
+
+> This command is an alias of `pacman --query`.
+
+- View documentation for the original command:
+
+`tldr pacman query`

tldr/linux/pacman-query

@@ -9,34 +9,34 @@ source: https://github.com/tldr-pages/tldr.git
 > See also: `pacman`.
 > More information: <https://manned.org/pacman.8>.
 
-- List installed packages and versions:
+- [Q]uery the local package database and list installed packages and versions:
 
-`pacman --query`
+`pacman -Q`
 
-- List only packages and versions that were explicitly installed:
+- List only packages and versions that were [e]xplicitly installed:
 
-`pacman --query --explicit`
+`pacman -Qe`
 
-- Find which package owns a file:
+- Find which package [o]wns a file:
 
-`pacman --query --owns {{filename}}`
+`pacman -Qo {{filename}}`
 
-- Display information about an installed package:
+- Display information about an [i]nstalled package:
 
-`pacman --query --info {{package}}`
+`pacman -Qi {{package}}`
 
-- List files owned by a package:
+- Display the [l]ist of files owned by a specific package:
 
-`pacman --query --list {{package}}`
+`pacman -Ql {{package}}`
 
-- List orphan packages (installed as dependencies but not required by any package):
+- List orphan packages (installed as [d]ependencies but unrequired ([t]) by any package and print in [q]uiet mode (only package name is displayed)):
 
-`pacman --query --unrequired --deps --quiet`
+`pacman -Qdtq`
 
-- List installed packages not found in the repositories:
+- List installed packages foreign ([m]) to the repository database:
 
-`pacman --query --foreign`
+`pacman -Qm`
 
-- List outdated packages:
+- List packages that can be [u]pgraded:
 
-`pacman --query --upgrades`
+`pacman -Qu`

tldr/linux/pg

@@ -0,0 +1,13 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pg
+
+> View files one page at a time.
+> More information: <https://manned.org/pg>.
+
+- View a file:
+
+`pg {{path/to/file}}`