shell scripts error

[suresheva31]

I am getting the follwong error when I run this shelll script
bash: [grep "$PATTERN" /mnt/etr/wt01/Logs/wt01-20041125.log | wc -l: No such file or directory

It is not true what they say 'No such file or directory " I know that whole directory exists. So please I need help on this

#!/bin/bash
$PATTERN="2014280766"
while true; do
if ['grep "$PATTERN" /mnt/etr/wt01/Logs/wt01-20041125.log | wc -l' -eq 5]; then
printf 'To:kumar@localhost\nThings went bad' | /usr/sbin/sendmail -t
fi
done
This what I want to do though??

If you want to monitor /mnt/etr/wt01/Logs/wt01-20041125.log
and you want to have the computer email you a sorted copy of it when there are hvve lines that match a specipc pattern, you

[wassy121]

Ah, the old-school bashisms come back quickly. Spacing matters!

if ['grep "$PATTERN" /mnt/etr/wt01/Logs/wt01-20041125.log | wc -l' -eq 5]; then

is wrong. It should read:

if [ `grep "$PATTERN" /mnt/etr/wt01/Logs/wt01-20041125.log | wc -l` -eq 5 ]; then

Note that I changed the single-quotes to backticks, and added a space between each square bracket. That should work nicely.

Best,

Samuel

[suresheva31]

Ah, the old-school bashisms come back quickly. Spacing matters!

if ['grep "$PATTERN" /mnt/etr/wt01/Logs/wt01-20041125.log | wc -l' -eq 5]; then

is wrong. It should read:

if [ `grep "$PATTERN" /mnt/etr/wt01/Logs/wt01-20041125.log | wc -l` -eq 5 ]; then

Note that I changed the single-quotes to backticks, and added a space between each square bracket. That should work nicely.

Best,

Samuel

Hey When I run this I get nothing out it, it is just staying there plus i get this

-bash: !/bin/bash: event not found, Could you please tell me how excute the shell scripting on the Terminal please

if run without this #!/bin/bash, it doesnt gives me anything it just statying there.

Thanks

#!/bin/bash
PATTERN="1100601032"
while true; do
if [`grep "$PATTERN" /usr/local/nagios/var/downtime.log | wc -l` -eq 5]; then
printf 'To:root@localhost\nThings went bad' | /usr/sbin/sendmail -t
fi

[Optimistic]

The script should be saved as something.sh and made executable. Then from a shell you can do ./something.sh

You need the line #!/bin/bash at the top of the script for it to be a shell script, so don't take it out.

[cjl7]

Hi,

You also need to put your $PATTERN as PATTERN= and not as $PATTERN=...


Cheers

Jonas

[wassy121]

Also, the logic is all wrong. The email will only get sent if there are exactly five entries of $PATTERN in the file. But, it will continue to run the grep command over and over and over again (due to the while true).

Best,

Samuel