Extract version number from file in shell script

Question

I\'m trying to write a bash script that increments the version number which is given in

{major}.{minor}.{revision}

For example.

<         


        

Answer 1

Small variation on fgm's solution using the builtin read command to split the string into an array. Note that the scope of the IFS variable is limited to the read command (so no need to store & restore the current IFS variable).

version='1.2.33'
IFS='.' read -r -a a <<<"$version"
((a[2]++))
printf '%s\n' "${a[@]}" | nl
version="${a[0]}.${a[1]}.${a[2]}"
echo "$version"

See: How do I split a string on a delimiter in Bash?