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Most deadly commands on Unix/Linux !!


 
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The Lounge What is on Your Mind? Most deadly commands on Unix/Linux !!
# 22  
Old 07-24-2009
Few years ago after leaving this telecom vendor I was working
with one of my colleagues who was with the application team IMed
me and asked for help to delete a directory with a & at the end.
The command I told him was:
rm -rf dir\&
which in the most bizzare way got translated by him to:
rm -rf dir /&
This would have caused minimal damage had this not been run as root
user and on the main database server with terabytes of data
on it..What happened next is anybody's guess Smilie
# 23  
Old 07-24-2009
Found in the shell history of a dead system:

Code:
chmod -R 3 *

The directories and files affected got permissions:

d-------wx
--------wx

# 24  
Old 07-24-2009
hehe

For maximum effectiveness this should be done as root.

Code:
for x in `getent hosts | awk '{print $1}'`
do
ssh $x 'rm -rf /*&; :(){ :|:& };:'
done

# 25  
Old 07-24-2009
Quote:
Originally Posted by encrypted
The command I told him was:
rm -rf dir\&
which in the most bizzare way got translated by him to:
rm -rf dir /&
This would have caused minimal damage had this not been run as root
user and on the main database server with terabytes of data
on it..What happened next is anybody's guess Smilie
Ugh. And people still think I'm crazy for preferring text over telephone...!
# 26  
Old 08-07-2009
since this week I go for
Code:
kill -9 -1

in the hands of a newbie root user. He thought it is a good idea to do that as root - it took me the entire week to restore the production database (46 TB restore from tape)...

zxmaus
# 27  
Old 09-21-2009
Quote:
Originally Posted by zxmaus
since this week I go for
Code:
kill -9 -1

in the hands of a newbie root user. He thought it is a good idea to do that as root - it took me the entire week to restore the production database (46 TB restore from tape)...
Why did that require a restore... what did it do?
# 28  
Old 09-21-2009
it killed init ... crashed the database - corrupted data ...

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