regexbashintegerversion-numbering

Bash comparison check to accept values only with format 0.1

I have this snippet:

if [[ $1 =~ ^[+-]?[0-9]+\.?[0-9]*$ ]]; then
     echo 'version is good'
     exit 0
else 
     exit 1
fi

The problem is that, the snippet $1 =~ ^[+-]?[0-9]+\.?[0-9]*$ should only validate versions formatted as number.number

Currently this chunk of code validates inputs as

1
01
0.1

Is there any way of making the code to only accept inputs formatted as 0.1 / 0.3.2 / 0.1.141 etc.

Thanks in advance.

EDIT:

To clarify this question, the code should only accept numbers separated with dots, like software program versioning.

Solution

  • I suggest this regex: ^[0-9]+(\.[0-9]+){1,2}$