Suponiendo que desea comparar los números de versión, intente lo siguiente:

 #!/bin/bash -posix # compares version numbers # prints 0 if $a == $b # positive number if $a is newer than $b # negative number if $a is older than $b vercmp() { local a=$1 local b=$2 local a1=${a%%.*} # major number of $a local b1=${b%%.*} # major number of $b if [[ $a = "" ]]; then if [[ $b = "" ]]; then echo 0 # both $a and $b are empty else vercmp "0" "$b" fi elif [[ $b = "" ]]; then vercmp "$a" "0" elif (( 10#$a1 == 10#$b1 )); then local a2=${a#*.} # numbers after the 1st dot if [[ $a2 = $a ]]; then a2="" # no more version numbers fi local b2=${b#*.} # numbers after the 1st dot if [[ $b2 = $b ]]; then b2="" # no more version numbers fi vercmp "$a2" "$b2" else echo $(( 10#$a1 - 10#$b1 )) fi }

Ejemplos:

 vercmp 0.2 0.1 => 1 (positive number: the former is newer) vercmp 1.0.2 1.0.10 => -8 (negative number: the latter is newer) a=0.2 b=0.1 if (( $(vercmp "$a" "$b") > 0 )); then echo "You are running an outdated version" fi