LinuxQuestions.org - How to truncate a file and disconnect a session !

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shipon_97

10-07-2010 01:29 AM

How to truncate a file and disconnect a session !

Dear Friends,

I have two questions :

1) Is it possible to truncate the file content , not to drop the file ? i.e, I want to just delete a file's content only, not to drop the file .

2) I can find the connectd user using command 'w' or 'who' . Now How can I force disconnect a session from the list of 'w'/'who' command ?

Waiting for kind reply ... ...

prayag_pjs

10-07-2010 01:51 AM

Code:

1. echo > file1

2. If user is connected via ssh :

Quote:

Do "kill <pid>" where pid is any process from their session (found by typing 'w')
ps -ax to find the pid of the sshd session, and kill it.

Code:

for i in `ps aux | grep user | grep -v grep | awk '{print $2}'`; do kill -9 $i; done;

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