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exit without saving history

Terminal - exit without saving history
kill -9 $$
2009-03-27 23:13:53
User: stu
Functions: kill
29
exit without saving history

this exits bash without saving the history. unlike explicitly disabling the history in some way, this works anywhere, and it works if you decide *after* issuing the command you don't want logged, that you don't want it logged

... $$ ( or ${$} ) is the pid of the current bash instance

this also works perfectly in shells that don't have $$ if you do something like

kill -9 `readlink /proc/self`

Alternatives

There are 3 alternatives - vote for the best!

Terminal - Alternatives

Know a better way?

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What others think

Doesn't `readlink /proc/self` return the pid of the readlink program rather than the shell's pid?

Comment by bwoodacre 335 weeks and 2 days ago

heh, yeah, it does. So, time for me to stop assuming everything is a shell builtin :-)

Comment by stu 332 weeks and 2 days ago

I like this better, since a kitten dies every time you kill -9.

unset HISTFILE
Comment by syssyphus 327 weeks and 5 days ago

This is not a good way to do things because you are ignoring anything else that might be done in .bash_logout.

A cleaner way to clear your running history is like this:

OLDHISTSIZE=$HISTSIZE

HISTSIZE=0

HISTSIZE=$OLDHISTSIZE

Also, don't count on being immune from logging by the system as some servers might be running exec loggers, which are independent of the shell.

Comment by deltaray 297 weeks ago

Your point of view

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