Posts tagged w

use strace to snoop on ssh sessions

posted on 2016-09-12 00:17

To snoop on another running SSH session, these oneliners come in handy.

  1. use w to find out which session you want to have a look at
  2. ps aux|grep pts to find out the PID
  3. replace the PID in the scripts below

CentOS

Tested on 6.8:

strace -p PID -e trace=write 2>&1 | grep --line-buffered -o '".*[^"]"' | sed -e 's/^"//' -e 's/"$//'

Debian

Tested on jessie / 8:

strace -p PID -e write 2>&1 | grep --line-buffered -e '^write(7' | grep --line-buffered -o '".*[^"]"' | sed -e 's/^"//' -e 's/"$//'

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