Update cheatsheets

tldr/linux/ausearch

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ausearch
+
+> Query the Linux audit log for events.
+> Part of the `audit` package.
+> See also: `audit2why`, `audit2allow`, `aureport`.
+> More information: <https://manned.org/ausearch>.
+
+- Search for all SELinux AVC denial events:
+
+`sudo ausearch {{[-m|--message]}} avc`
+
+- Search for events related to a specific executable:
+
+`sudo ausearch {{[-c|--comm]}} {{httpd}}`
+
+- Search for events from a specific user:
+
+`sudo ausearch {{[-ui|--uid]}} {{1000}}`
+
+- Search for events in the last 10 minutes:
+
+`sudo ausearch {{[-ts|--start]}} recent`
+
+- Search for failed login attempts:
+
+`sudo ausearch {{[-m|--message]}} user_login {{[-sv|--success]}} no`
+
+- Search for events related to a specific file:
+
+`sudo ausearch {{[-f|--file]}} {{path/to/file}}`
+
+- Display results in raw format for further processing:
+
+`sudo ausearch {{[-m|--message]}} avc --raw`

tldr/linux/grub-mkrescue

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# grub-mkrescue
+
+> Make a GRUB CD/USB/floppy bootable image.
+> More information: <https://www.gnu.org/software/grub/manual/grub/grub.html#Invoking-grub_002dmkrescue>.
+
+- Create a bootable ISO from the current directory and save it as `grub.iso`:
+
+`grub-mkrescue --output {{grub.iso}} .`
+
+- Create an ISO using GRUB files from a custom directory:
+
+`grub-mkrescue --directory {{/usr/lib/grub/i386-pc}} --output {{grub.iso}} {{path/to/source}}`
+
+- Use compression for GRUB files when building the image, setting `no` disables compression:
+
+`grub-mkrescue --compress {{no|xz|gz|lzo}} --output {{grub.iso}} {{path/to/source}}`
+
+- Disable the GRUB command-line interface in the generated image:
+
+`grub-mkrescue --disable-cli --output {{grub.iso}} {{path/to/source}}`
+
+- Preload specific GRUB modules into the image:
+
+`grub-mkrescue --modules "{{part_gpt iso9660}}" --output {{grub.iso}} {{path/to/source}}`
+
+- Pass additional options directly to `xorriso`:
+
+`grub-mkrescue --output {{grub.iso}} -- {{-volid}} {{volume_name}} {{path/to/source}}`
+
+- Display help:
+
+`grub-mkrescue {{[-?|--help]}}`
+
+- Display version:
+
+`grub-mkrescue --version`

tldr/linux/ip-monitor

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# ip monitor
+
+> Monitor network for state changes.
+> More information: <https://manned.org/ip-monitor>.
+
+- Monitor the whole network for state changes:
+
+`ip {{[mo|monitor]}}`
+
+- Specify the type to monitor:
+
+`ip {{[mo|monitor]}} {{link|address|route|neigh|rule|maddress|...}}`
+
+- Replay an event file (can be generated with `rtmon`):
+
+`ip {{[mo|monitor]}} {{[f|file]}} {{path/to/file}}`

tldr/linux/mhwd

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# mhwd
+
+> Manjaro Hardware Detection utility  .
+> More information: <https://wiki.manjaro.org/index.php/Manjaro_Hardware_Detection_Overview>.
+
+- List available drivers:
+
+`mhwd {{[-l|--list]}}`
+
+- List installed drivers:
+
+`mhwd {{[-li|--listinstalled]}}`
+
+- Install a driver:
+
+`mhwd {{[-i|--install]}} {{pci|usb}} {{driver_name}}`
+
+- Remove a driver:
+
+`mhwd {{[-r|--remove]}} {{pci|usb}} {{driver_name}}`
+
+- Display detailed information about detected hardware:
+
+`mhwd {{[-l|--list]}} {{[-d|--detail]}}`
+
+- Automatically install best available driver for the detected graphics card:
+
+`mhwd {{[-a|--auto]}} pci {{free|nonfree}} 0300`

tldr/linux/paclog

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# paclog
+
+> Filter pacman log entries.
+> More information: <https://github.com/andrewgregory/pacutils/blob/master/doc/paclog.pod>.
+
+- Display the entire pacman log:
+
+`paclog`
+
+- Display pacman-style logged commandline entries:
+
+`paclog --commandline`
+
+- Display only errors, warnings, and notes:
+
+`paclog --warnings`
+
+- Display package name and action type:
+
+`paclog --package {{package_name}} --action {{install|upgrade|remove|...}}`
+
+- Display the list of installed packages according to the log:
+
+`paclog --pkglist`
+
+- Display help:
+
+`paclog --help`
+
+- Display version:
+
+`paclog --version`

tldr/linux/pacrepairdb

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pacrepairdb
+
+> Fix corrupted database entries in libalpm database.
+> More information: <https://github.com/andrewgregory/pacutils/blob/master/doc/pacrepairdb.pod>.
+
+- Perform a basic repair on a specific package:
+
+`pacrepairdb {{package_name}}`
+
+- Update the database entries without extracting or removing any packages:
+
+`pacrepairdb {{package_name}} --dbonly`
+
+- Display the packages to be repaired and the cache packages to be used without making any changes:
+
+`pacrepairdb {{package_name}} --print-only`
+
+- Display additional progress and debug information:
+
+`pacrepairdb {{package_name}} --verbose`
+
+- Display help:
+
+`pacrepairdb --help`
+
+- Display version:
+
+`pacrepairdb --version`

tldr/linux/rtmon

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# rtmon
+
+> Save network state changes to a file.
+> More information: <https://manned.org/rtmon>.
+
+- Save all network state changes to a file:
+
+`sudo rtmon {{[f|file]}} {{path/to/file}}`
+
+- Specify the type of change to log:
+
+`sudo rtmon {{[f|file}} {{link|address|route}}`

tldr/linux/selinuxenabled

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# selinuxenabled
+
+> Check whether SELinux is enabled.
+> Returns exit code 0 if SELinux is enabled, and 1 if it is not.
+> See also: `getenforce`, `setenforce`, `sestatus`.
+> More information: <https://manned.org/selinuxenabled>.
+
+- Check if SELinux is enabled (no output; check exit code with `echo $?`):
+
+`selinuxenabled`
+
+- Check if SELinux is enabled and print the result:
+
+`selinuxenabled && echo "SELinux is enabled" || echo "SELinux is disabled"`
+
+- Use in a shell script to conditionally execute commands:
+
+`if selinuxenabled; then echo "SELinux is running"; fi`

tldr/linux/semodule

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# semodule
+
+> Manage SELinux policy modules.
+> See also: `audit2allow`, `semanage`.
+> More information: <https://manned.org/semodule>.
+
+- List all installed policy modules:
+
+`sudo semodule {{[-l|--list]}}`
+
+- Install a new policy module:
+
+`sudo semodule {{[-i|--install]}} {{path/to/module.pp}}`
+
+- Remove a policy module:
+
+`sudo semodule {{[-r|--remove]}} {{module_name}}`
+
+- Enable a policy module:
+
+`sudo semodule {{[-e|--enable]}} {{module_name}}`
+
+- Disable a policy module:
+
+`sudo semodule {{[-d|--disable]}} {{module_name}}`
+
+- Reload all policy modules:
+
+`sudo semodule {{[-R|--reload]}}`
+
+- Display the version of installed policy modules:
+
+`sudo semodule {{[-l|--list]}} {{[-v|--verbose]}}`

tldr/linux/systemctl-list-unit-files

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemctl list-unit-files
+
+> List installed unit files and their enablement states.
+> See also: `systemctl list-units` for listing units currently loaded in memory.
+> More information: <https://www.freedesktop.org/software/systemd/man/latest/systemctl.html#list-unit-files%20PATTERN%E2%80%A6>.
+
+- List installed unit files and their states:
+
+`systemctl list-unit-files`
+
+- Filter by state:
+
+`systemctl list-unit-files --state {{enabled|disabled|static|...}}`
+
+- Filter by unit type:
+
+`systemctl list-unit-files {{[-t|--type]}} {{service|socket|timer|...}}`
+
+- Filter by a name pattern:
+
+`systemctl list-unit-files '{{sshd*}}'`
+
+- Print output directly to `stdout`:
+
+`systemctl list-unit-files --no-pager`
+
+- Print output without headers or footers:
+
+`systemctl list-unit-files --no-legend`

tldr/linux/systemctl-preset

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# systemctl preset
+
+> Reset the enablement state of unit files to the defaults specified in preset policy files.
+> See also: `systemctl preset-all`, `systemctl list-unit-files`.
+> More information: <https://www.freedesktop.org/software/systemd/man/latest/systemctl.html#preset%20UNIT%E2%80%A6>.
+
+- Reset the enablement state to preset defaults:
+
+`systemctl preset {{unit1 unit2 ...}}`
+
+- Enable only if marked as enabled in the preset policy:
+
+`systemctl preset {{unit}} --preset-mode enable-only`
+
+- Disable only if marked as disabled in the preset policy:
+
+`systemctl preset {{unit}} --preset-mode disable-only`
+
+- Suppress output and return only the exit code:
+
+`systemctl preset {{unit}} {{[-q|--quiet]}}`