Bash – How to one time out a root shell after a certain period of time

bashksh

Is there a way to 'time out' a root shell (for example, in gnome-terminal) so that after a certain amount of time not issuing any commands, the shell exits?

I'm searching for a solution that works in bash on Fedora, and in ksh on OpenBSD.

Best Answer

You can set set the TMOUT variable to a number in seconds that you wish for bash to wait before automatically logging out the shell if no command is run.

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Bash – How to read certain lines after a find some text

An awk solution:

$ awk '$0 == "UNIX" {i=1;next};i && i++ <= 2' file
Test 5
Test 6

Explanation

/^UNIX$/{i=1;next}: if we see UNIX, we set variable i = 1, processing to next input.
If variable i is set (meaning we saw UNIX), i && i++ <= 2 only evaluated to true value in next two lines after UNIX, causing awk performed default action print $0.
Before seeing UNIX, i was not defined and begin at 3rd line after UNIX, i had a value greater than 2, which make expression i && i++ <= 2 evaluated to false, causing awk do nothing.

Bash – Never clear .bash_history (HISTFILE)

Add this line to your .profile (or .bash_profile):

export HISTSIZE=
export HISTFILESIZE=

From Bash History Facilities documentation:

If HISTFILESIZE is not set, no truncation is performed.

Best Answer

Related Solutions

Bash – How to read certain lines after a find some text

Bash – Never clear .bash_history (HISTFILE)

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