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3 questions
0votes
1answer
836views
Only perform sed operations on lines starting with a particular string [closed]
I have the following file format Received from +11231231234 at 2021-10-10T19:56:50-07:00: This is a message that contains words like from, at, etc. Sent to +11231231234 at 2021-10-11T06:50:57+00:00: ...
- 73
3votes
1answer
4kviews
How do I use sed to insert a line at the top of my file?
I'm using bash shell on Amazon Linux. I'm trying to insert a line at the top of my file so I have header_line="first_line_of_file" ... sed -i "1 i\$header_line" /tmp/$file_title However what is ...
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-1votes
2answers
739views
Extracting certain data within a script output file
We have a script that runs several commands and rolls up all the output and inserts in into a log file. One of the commands it runs is "netstat -anp". I'd like to be able to search this file for all ...
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