Linux – How to delete all characters in one line after “]” with sed

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How to delete all characters in one line after "]" with sed ?

Im trying to grep some file using cat, awk. Now my oneliner returns me something like

121.122.121.111] other characters in logs from sendmail.... :)

Now I want to delete all after "]" character (with "]"). I want only 121.122.121.111 in my output.

I was googling for that particular example of sed but didn't find any help in those examples.

Best Answer

 echo "121.122.121.111] other characters in logs from sendmail...." | sed 's/].*//'

So if you have a file full of lines like that you can do

 sed 's/].*//' filename

Related Solutions

Linux – What command can I use to search sendmail logs for ALL message details involving a specific recipient.

You could do something similar to this.

for i in `grep -i "someuser@recipientdomain.com" /var/log/maillog | awk '{print $5}'`; do grep -i $i /var/log/maillog; done

This will grep out the line for the user you are looking for, then select the 5th item on the line (seperated by spaces iirc). Then for each message ID in that list, will then grep for the lines containing the message ID's.

If you want to remove the : from the end of the message ID, you can do something like for i in grep -i "someuser@recipientdomain.com" /var/log/maillog | awk '{print $5}' | sed 's/\://; do grep -i $i /var/log/maillog; done

Hope that helps.

Linux – How to add a line break before a set of values going into a bash script

This will add a '\n' for every line starting with "foo":

sed 's/^"foo1":/\n&/'

Best Answer

Related Solutions

Linux – What command can I use to search sendmail logs for ALL message details involving a specific recipient.

Linux – How to add a line break before a set of values going into a bash script

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