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Old 07-13-2008, 03:15 PM   #1
Cheloo
LQ Newbie
 
Registered: Apr 2007
Posts: 10

Rep: Reputation: 0
Unhappy Simple bash script please help!


Hello,

I have the output:

brouter mdstat # md5sum -c /root/mdstat.md5
/proc/mdstat: OK

I would like to have a script that has IF function in it, so every time the output of that md5sum command will have any other output, to echo a message.

I've tried:

Quote:
md5sum /proc/mdstat > /root/mdstat.md5
md5sum -c /root/mdstat.md5 > /root/mdstat.exit

if [ "/root/mdstat.exit" -ne "/proc/mdstat: OK" ]
then
echo "Danger!"
fi
But it gives me errors... what should I do?

Thanks a lot everyone!
 
Old 07-13-2008, 03:35 PM   #2
acid_kewpie
Moderator
 
Registered: Jun 2001
Location: UK
Distribution: Gentoo, RHEL, Fedora, Centos
Posts: 43,398

Rep: Reputation: 1965Reputation: 1965Reputation: 1965Reputation: 1965Reputation: 1965Reputation: 1965Reputation: 1965Reputation: 1965Reputation: 1965Reputation: 1965Reputation: 1965
You really could actually tell us what the error is, that's kinda helpful...

I can see that you're using test wrong though, -ne compares two numbers, whereas you are trying to compare to file*NAMES* not the contents of the files or anything past that. you need to use = to compare strings, as the manpage states, but then you've not put much of this in any context so it's hard to work out what you're really doing.

if you want to check a previous md5sum then it's a lot simpler, for example:

md5sum -c /a/b/c.md5 > /dev/null
if [ $? ]
then
... fail ...
else
... pass ...
fi
 
Old 07-13-2008, 03:52 PM   #3
Cheloo
LQ Newbie
 
Registered: Apr 2007
Posts: 10

Original Poster
Rep: Reputation: 0
Tried like this:

Quote:
md5sum /proc/mdstat > /root/mdstat.md5
x=`md5sum -c /root/mdstat.md5`

if [ "$x" -ne "/proc/mdstat: OK" ]
then
echo "Danger!"

fi
but the same error:

[: /proc/mdstat: OK: integer expression expected
 
Old 07-13-2008, 03:54 PM   #4
Cheloo
LQ Newbie
 
Registered: Apr 2007
Posts: 10

Original Poster
Rep: Reputation: 0
stupid me, tried with "!=" and it's working, thanks a lot acid_kewpie!
 
  


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