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Hi I have a script where I put info from one command into a file with below:



what I now want is for the script to search for the string: "callid: " inside this file and output the number which comes after "callid: "

The file contains a line which says:
So I want to "extract" 4 into a variable but I dont know how to do this.

So the number always come after "id: " and before "," so the number could be 4 or 4976.

Next , if the "CALL0:" in the file outputs: IDLE like this: CALL0: IDLE I want the script to exit.

Can anyone help me with this? I would be trule greatful!

If you need more info, just post here and I'll try to explain better.
Thanks in advance!

Ok, so this may not answer your question in full, but it should atleast point you in the right direction.

Ok so say I have a file called number.txt with the following contents:



Above you see that whilst using the cat command againts the number.txt file has the following numbers separated by spaces.

I want to take the output of the cat command and extract just one of the fields from this file, in this case the number three.

So the step is to pipe (|) the output of cat and feed it to the cut command as follows"



So when you pipe the output to cat we use the delimeter field "space" using the -d switch and extract field number three (in this case number three from the file above).

You can follow the same format and try to extract the necessary information you need.

Hi my textfile outputs this:



And I want it to search the entire file for "callid: " and end at "," so anything in between these two: which would output 4. Sorry I dont understand how I can do that with cut?

Thanks for the reply!

The first line extracts column 6 (separated by spaces) from any line matching /callid/ and stores it, the second line removes the , from the output.
Hopefully this'll help you get to what you need.

Thanks, I got it working with sed,



Just wanted to fill in this if in the feature someone is searching for a similar question.