About LinuxFix

LinuxFix is a small reference site for Linux errors that are hard to read from the message alone: a systemd exit code, a 502 with a truncated upstream, a permission denied on a socket, a cron expression that does not fire when you think it should.

How pages are written

Every page starts from a real failure, not from a list of keywords. Before a page is published I reproduce the error on a throwaway machine, copy the actual output, and write the fix that made it go away. That is why pages show the exact log line you are likely to see rather than a cleaned-up description of it.

If a page describes a command, the command was run. If it describes a permission model, the permissions were checked with ls -l and id rather than assumed.

What this site is not

• It is not a substitute for your distribution’s documentation, which is more precise about version-specific behaviour.
• It does not cover enterprise distributions with vendor kernels in depth; paths and defaults differ enough that a generic page would be misleading.
• It has no comments, accounts, or newsletter. There is nothing to sign up for.

Who writes it

Shen Lijun, a systems person who spends more time reading logs than writing applications. LinuxFix is independent: it is not affiliated with any distribution, hosting provider, or vendor mentioned on the site.

Corrections

If a fix on this site does not work on your system, that is worth knowing. Use the contact page and include your distribution, version, and the exact output you got.