Update cheatsheets

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

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+---
+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}}`