I have abc.txt file that has below entries. I would like to replace substring of the sentence that begins with "test" after the second colon (:) with given value.
Tried below:
echo test:abc.io/gng-cp:1.34.2-of1231 | sed 's/\([^test:]*:\).*/\11.333.555/g'
But it is giving:
test:1.333.555
Expected was:
test:abc.io/gng-cp:1.333.555
Input is:
abc.txt
=======
jnu
mango
vim
test:abc.io/gng-cp:1.34.2-of1231
Appreciate inputs on how to fix this?
The expression [^test:]* means: match zero or more of characters that are NOT in the set {t, e, s, t, :}, which is probably not what you want. You're passing the global /g modifier to the expression, even though you're only modifying the string once. Also, it's not clear where you're capturing the abc.io/gng-cp portion of the string to preserve it.
Try this:
sed 's/^\(test:[^:]*:\).*$/\11.333.555/' abc.txt
This will match a string starting with test: and preserve it and everything else between the two colons, replacing everything after the second colon with the new number string.
Following awk may also help you.
echo "test:abc.io/gng-cp:1.34.2-of1231" | awk -v val="1.333.555" 'match($0,/:[^:]*/){print substr($0,1,RSTART+RLENGTH) val;next} 1' Input_file
Adding a non-one liner form of solution now.
echo "test:abc.io/gng-cp:1.34.2-of1231" | awk -v val="1.333.555" '
match($0,/:[^:]*/){
print substr($0,1,RSTART+RLENGTH) val;
next}
1'
