Update cheatsheets

tldr/arch

@@ -7,7 +7,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 > Display the name of the system architecture.
 > See also `uname`.
-> More information: <https://www.gnu.org/software/coreutils/arch>.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/arch-invocation.html>.
 
 - Display the system's architecture:
 

tldr/chown

@@ -6,7 +6,7 @@ source: https://github.com/tldr-pages/tldr.git
 # chown
 
 > Change user and group ownership of files and directories.
-> More information: <https://www.gnu.org/software/coreutils/chown>.
+> More information: <https://www.gnu.org/software/coreutils/manual/html_node/chown-invocation.html>.
 
 - Change the owner user of a file/directory:
 

tldr/linux/eclean

@@ -0,0 +1,25 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# eclean
+
+> Clean repository source files and binary packages.
+> More information: <https://wiki.gentoo.org/wiki/Eclean>.
+
+- Clean the source file directory:
+
+`sudo eclean distfiles`
+
+- Clean the binary package directory:
+
+`sudo eclean packages`
+
+- Clean the distfiles of all uninstalled packages, but keep the distfiles of installed packages:
+
+`sudo eclean --deep --package-names distfiles`
+
+- Clean the binary packages of all uninstalled packages, but keep the binaries of installed packages:
+
+`sudo eclean --deep --package-names packages`

tldr/linux/euse

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# euse
+
+> Enable, disable, and obtain information about Gentoo USE flags.
+> More information: <https://wiki.gentoo.org/wiki/Euse>.
+
+- List active global USE flags:
+
+`euse --active --global`
+
+- List active local USE flags:
+
+`euse --active --local`
+
+- Enable a global USE flag:
+
+`sudo euse --enable {{use_flag}}`
+
+- Disable a global USE flag (put a '-' sign in front of the USE flag):
+
+`sudo euse --disable {{use_flag}}`
+
+- Remove a global USE flag:
+
+`sudo euse --prune {{use_flag}}`

tldr/linux/protontricks

@@ -28,6 +28,10 @@ source: https://github.com/tldr-pages/tldr.git
 
 `protontricks -s {{game_name}}`
 
+- Run an executable in the proton environment of a specific game:
+
+`protontricks-launch --appid {{appid}} {{path/to/executable.exe}}`
+
 - Display help:
 
 `protontricks --help`

tldr/linux/systemd-cryptsetup

@@ -0,0 +1,27 @@
+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemd-cryptsetup
+
+> Create or remove decrypted mappings of encrypted volumes. Equivalent of `cryptsetup open` and `cryptsetup close`.
+> Arguments to this command are written exactly like a line in `/etc/crypttab`. It's used by systemd to unlock devices on boot.
+> See also: `cryptsetup`.
+> More information: <https://www.freedesktop.org/software/systemd/man/latest/systemd-cryptsetup.html>.
+
+- Open a LUKS volume and create a decrypted mapping at `/dev/mapper/mapping_name`:
+
+`systemd-cryptsetup attach {{mapping_name}} {{/dev/sdXY}}`
+
+- Open a LUKS volume with additional options and create a decrypted mapping at `/dev/mapper/mapping_name`:
+
+`systemd-cryptsetup attach {{mapping_name}} {{/dev/sdXY}} none {{crypttab_options}}`
+
+- Open a LUKS volume with a keyfile and create a decrypted mapping at `/dev/mapper/mapping_name`:
+
+`systemd-cryptsetup attach {{mapping_name}} {{/dev/sdXY}} {{path/to/keyfile}} {{crypttab_options}}`
+
+- Remove an existing mapping:
+
+`systemd-cryptsetup detach {{mapping_name}}`

tldr/tesseract

@@ -22,7 +22,7 @@ source: https://github.com/tldr-pages/tldr.git
 
 - Specify a custom page segmentation mode (default is 3):
 
-`tesseract -psm {{0_to_10}} {{image.png}} {{output}}`
+`tesseract --psm {{0_to_10}} {{image.png}} {{output}}`
 
 - List page segmentation modes and their descriptions:
 

tldr/while

@@ -15,3 +15,7 @@ source: https://github.com/tldr-pages/tldr.git
 - Execute a command forever once every second:
 
 `while :; do {{command}}; sleep 1; done`
+
+- Execute a command until it returns a non-zero value:
+
+`while {{command}}; do :; done`

tldr/zpaq

@@ -0,0 +1,33 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# zpaq
+
+> Incremental journaling backup utility and archiver.
+> More information: <https://mattmahoney.net/dc/zpaq.html>.
+
+- [a]dd a file or directory to a new or existing archive:
+
+`zpaq a {{path/to/archive.zpaq}} {{path/to/file_or_directory}}`
+
+- Create or add to an encrypted archive:
+
+`zpaq a -k{{password}} {{path/to/archive.zpaq}} {{path/to/file_or_directory}}`
+
+- E[x]tract the most recent versions of files:
+
+`zpaq x {{path/to/archive.zpaq}}`
+
+- [l]ist the archive contents:
+
+`zpaq l {{path/to/archive.zpaq}}`
+
+- Set the level of compression (higher means more compression but slower):
+
+`zpaq a {{path/to/archive.zpaq}} -m{{1|2|3|4|5}} {{path/to/file_or_directory}}`
+
+- E[x]tract the specified files from the archive that are not newer than the specified date:
+
+`zpaq x {{path/to/archive.zpaq}} {{path/in/archive/to/extract}} -to {{path/to/output}} -until {{YYYY-MM-DD}}`