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Use "command substitution" likef1(){ echo 1; }
STATUS=$(f1)
echo $STATUS
1

Thank you for using CODE tags correctly. :b:

I'm not sure what you mean by "only awk was present". You do realize that if you invoke the script shown in your last post by name (i.e.,...

Look at the tutorial explaining how to use CODE tags in the private e-mail that was sent to you a few minutes ago...

If this is a shell and/or expect script, why are you telling the system to use...

From the standards:
Or, translated from standardese, perform the specified substitution (insert an octothorpe at the start of a line) on lines that do not contain an open brace character.

You could also try ed or ex with any shell that has a syntax based on the Bourne shell (e.g., ash, bash, ksh, zsh...):
#!/bin/ksh
ed -s a.sh <<-EOF
g/beautiful/s/^/#/
w
q
EOF
These...

Hello ashima,

You are most welcome to forum, hope you will enjoy learning here. echo $$ will be used to write PID of the current shell.
So tmp$$ is just a Temporary file created in above code,...

Please use code tags as required by forum rules!

Try awk '/beautiful/ {printf "#"} 1' file > tmp$$; mv tmp$$ file

search these fora for "in place file replacement".