.sh_history question

On our UNIX system , we have a common account. there are around 6 users who can log into that account. the $HOME/.sh_history file has shown some suspicious commands . ( somebody deleted important files using rm command)..   Through this .sh_history file can i get to know who was the user who ran the rm commands.

One thing to note is everybody first loginto thier indiviuval account and then by using su command they log into common account.

the .sh_history file shows only commands. Can me or adming with extra rights get to know who was the actual user who ran those commands.
n78298Asked:
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woolmilkporcCommented:
Hi,
with 'su' there should be a logfile called 'sulog' somewhere, depending on your OS.
In some systems, logging is controlled by the environment variable 'SULOG_FILE'
Additionally, there could be syslog entries.
Please check!
wmp
 
 
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n78298Author Commented:
without su coming into picture , can;t we identify who was the user who issues those commands.
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woolmilkporcCommented:
No, unfortunately not, as the history files belong to the target user ('common account'). There is no information contained where the user came from.
You could check who logged in from where at which time using the 'last' command, given you keep the 'wtmp' file long enough.
See 'man last' for details.
wmp
 
 
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