execute your commands and avoid history records

cat | bash
Sometimes you don't want to leave history, because of passwords use or somethink like. I think it help.

2010-08-18 13:47:46

4 Alternatives + Submit Alt

What Others Think

Interesting, but a space before a command is a better way of running something and not saving it in the history. Keep in mind though that passwords on the command line may still show up in a process list and if you're on another sysadmin's system, they might have turned on exec logging to keep track of what users are running.
deltaray · 612 weeks and 5 days ago
Putting a password in to a variable in the environment of a shell is an *incredibly* bad idea. First, the value will stay in memory until it is changed. Secondly, shell expansion will have it one the command line -- leaving it in another shell environment variable, and third (as pointed out above) it can end up in the process list on the system. And, even if the memory is freed up by the shell, and the variable is reset, the value of the password is still in memory...you have no way of controlling when the memory page will be reused and therefore no way to avoid someone dumping pages of memory from the system looking for items that could be passwords.
unixmonkey11428 · 612 weeks and 5 days ago
This hack is truth. The space command thing is crap. Another way to not right your entire session history (If auto-append to history is not on) is to run kill -9 $$. The $$ is your user session pid.
somaddict · 495 weeks and 4 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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