Update cheatsheets

tldr/linux/owut

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# owut
+
+> OpenWrt Upgrade Tool for automating builds and installs via Attended SysUpgrade (ASU).
+> More information: <https://openwrt.org/docs/guide-user/installation/sysupgrade.owut>.
+
+- List available OpenWrt versions for the current device:
+
+`owut versions`
+
+- List user installed or removed packages:
+
+`owut list`
+
+- Check for updates without performing an upgrade:
+
+`owut check`
+
+- Automatically build, download, verify, and install the latest available firmware:
+
+`owut upgrade`
+
+- Upgrade to a specific version and include additional packages:
+
+`owut upgrade {{[-V|--version-to]}} {{version}} {{[-a|--add]}} "{{htop vim}}"`
+
+- Download and verify a specific image without installing it:
+
+`owut download {{[-V|--version-to]}} {{25.12.0}}`
+
+- Verify the latest downloaded image and install it (device will reboot):
+
+`owut install`

tldr/linux/update-ca-certificates

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# update-ca-certificates
+
+> Update the CA certificates bundle and regenerate `/etc/ssl/certs`.
+> More information: <https://manned.org/update-ca-certificates>.
+
+- Update certificates:
+
+`sudo update-ca-certificates`
+
+- Update certificates in verbose mode:
+
+`sudo update-ca-certificates {{[-v|--verbose]}}`
+
+- Perform a fresh update (remove all symlinks and regenerate):
+
+`sudo update-ca-certificates {{[-f|--fresh]}}`
+
+- Add a custom certificate (copy it first, then update):
+
+`sudo cp {{path/to/certificate.crt}} /usr/local/share/ca-certificates/ && sudo update-ca-certificates`