Input file
..
set name "old name"; # comment "should be updated"
..
Output file
..
set name "new name" ; #comment "should be updated"
..
when i tried to grep the content between quotes with grep -i 'name' inputfile | grep -P \".+{\"}
its grepping content between first " and last "
i.e old name"; # comment "should be updated
any idea to accomplish that using grep
, sed
or awk
!
It's unclear exactly what you're trying to do. For one thing, your grep
command includes a curly brace and the input doesn't. Also, it appears that you want to make a substitution based on a comparison of your input and output.
However, taking your question literally, here's how you can grep
the strings between the quotes. You can use non-greedy matching:
grep -Po '".*?"'
Example:
$ echo 'set name "username"; # comment "should be updated"' | grep -Po '".*?"'
"username"
"should be updated"
Edit:
In order to substitute a value, you can use sed
. You would not use grep
.
sed 's/"[^"]*"/"new name"/'
Example:
$ echo 'set name "old name"; # comment "should be updated"' | sed 's/"[^"]*"/"new name"/'
set name "new name"; # comment "should be updated"
Sed:
sed 's/[^"]*"\([^"]*\)".*/\1/'
Awk:
awk -F'"' '{ print $2 }'
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