[SOLVED] replace string using sed to extract textbetween two character and remove the last character

Issue

String: @btbtbtbr@ Desired Output: @btbtbtbr

Is there any regex to use grep to extract @btbtbt@ from file. Or sed to convert it My file has multiple occurences of words between two @ and want to replace word with itself but removing second @

Tried Below command but failed

grep '@.*@' -o | sed 's/.$//g'

grep -Po '(?<=(@ )).*(?= @)' | sed 's/.$//g'

sed -e 's/.*@\(.*\)@.*/\1/'

Solution

You may try using the pattern (@.*?)@ and then replace with just the first capture group:

echo "@btbtbtbr@" | sed -rn 's/(@[^@]+)@/\1/p'

Answered By - Tim Biegeleisen