After a reboot, I started seeing a message when loading the shell:
zsh: corrupt history file /home/myusername/.zsh_history
How can I recover from this situation and potentially recover some of the history?
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Found a blog post describing a fix that appears to work for me, while restoring my missing history:
mv .zsh_history .zsh_history_bad
strings .zsh_history_bad > .zsh_history
Afterwards, you may want to instruct zsh to re-read the history form the recovered history file
fc -R .zsh_history
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10May I ask what does the command
fc -R .zsh_historymean? I've triedman fcand it tells me thatNo manual entry for fc, and neither could thefc -htell me more than the usage. Thanks. – kenshinji Aug 5 '16 at 5:15 -
2For more details about the fc command, see here and here. The -R option is not present there, but zsh completion lists, among the options,
-R -- read history from file– Jeffrey Lebowski Aug 23 '16 at 11:41 -
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1@hugronaphor In my case it was that I had to do a hard shutdown of my laptop. This caused some issues for me as I did this during a disk write operation and one of the things that got corrupted was my zsh file among other things. – RyanNerd Jan 26 '18 at 20:59
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2For the correct
fcdocumentation, seeman zshbuiltins, also available at zsh.sourceforge.net/Doc/Release/Shell-Builtin-Commands.html. As suggested by Jeffrey, "‘fc -R’ reads the history from the given file". – Martin Jan 29 '18 at 4:51
Simply removing random characters may also work:
vim .zsh_historyRemove any strange characters, which would most probably be near the end. (In my case I had a string of
@in the second last line, following a forced shutdown):x(save and exit)
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Of course, you can also use any other editor like ` emacs` or ` nano` … 😜 – rugk Jun 13 '20 at 13:10
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