function version_compare () {
  function sub_ver () {
    local len=${#1}
    temp=${1%%"."*} && indexOf=`echo ${1%%"."*} | echo ${#temp}`
    echo -e "${1:0:indexOf}"
  }
  function cut_dot () {
    local offset=${#1}
    local length=${#2}
    echo -e "${2:((++offset)):length}"
  }
  if [ -z "$1" ] || [ -z "$2" ]; then
    echo "=" && exit 0
  fi
  local v1=`echo -e "${1}" | tr -d '[[:space:]]'`
  local v2=`echo -e "${2}" | tr -d '[[:space:]]'`
  local v1_sub=`sub_ver $v1`
  local v2_sub=`sub_ver $v2`
  if (( v1_sub > v2_sub )); then
    echo ">"
  elif (( v1_sub < v2_sub )); then
    echo "<"
  else
    version_compare `cut_dot $v1_sub $v1` `cut_dot $v2_sub $v2`
  fi
}

### Usage:

version_compare "1.2.3" "1.2.4"
# Output: <

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我遇到并解决了这个问题，添加了一个额外的(更短更简单的)答案…

首先注意，扩展shell比较失败了，你可能已经知道了…

    if [[ 1.2.0 < 1.12.12 ]]; then echo true; else echo false; fi
    false

使用sort -t'。'-g(或者kanaka提到的sort -V)来排序版本和简单的bash字符串比较，我找到了一个解决方案。输入文件包含列3和列4中的版本，我想对它们进行比较。这将遍历列表，确定匹配项或其中一个大于另一个。希望这仍然可以帮助那些希望使用bash尽可能简单地做到这一点的人。

while read l
do
    #Field 3 contains version on left to compare (change -f3 to required column).
    kf=$(echo $l | cut -d ' ' -f3)
    #Field 4 contains version on right to compare (change -f4 to required column).
    mp=$(echo $l | cut -d ' ' -f4)

    echo 'kf = '$kf
    echo 'mp = '$mp

    #To compare versions m.m.m the two can be listed and sorted with a . separator and the greater version found.
    gv=$(echo -e $kf'\n'$mp | sort -t'.' -g | tail -n 1)

    if [ $kf = $mp ]; then 
        echo 'Match Found: '$l
    elif [ $kf = $gv ]; then
        echo 'Karaf feature file version is greater '$l
    elif [ $mp = $gv ]; then
        echo 'Maven pom file version is greater '$l
   else
       echo 'Comparison error '$l
   fi
done < features_and_pom_versions.tmp.txt

感谢Barry的博客给出了排序的想法…… 裁判:http://bkhome.org/blog/?viewDetailed=02199

ver_cmp()
{
    local IFS=.
    local V1=($1) V2=($2) I
    for ((I=0 ; I<${#V1[*]} || I<${#V2[*]} ; I++)) ; do
        [[ ${V1[$I]:-0} -lt ${V2[$I]:-0} ]] && echo -1 && return
        [[ ${V1[$I]:-0} -gt ${V2[$I]:-0} ]] && echo 1 && return
    done
    echo 0
}

ver_eq()
{
    [[ $(ver_cmp "$1" "$2") -eq 0 ]]
}

ver_lt()
{
    [[ $(ver_cmp "$1" "$2") -eq -1 ]]
}

ver_gt()
{
    [[ $(ver_cmp "$1" "$2") -eq 1 ]]
}

ver_le()
{
    [[ ! $(ver_cmp "$1" "$2") -eq 1 ]]
}

ver_ge()
{
    [[ ! $(ver_cmp "$1" "$2") -eq -1 ]]
}

测试:

( ( while read V1 V2 ; do echo $V1 $(ver_cmp $V1 $V2) $V2 ; done ) <<EOF
1.2.3 2.2.3
2.2.3 2.2.2
3.10 3.2
2.2 2.2.1
3.1 3.1.0
EOF
) | sed 's/ -1 / < / ; s/ 0 / = / ; s/ 1 / > /' | column -t

1.2.3  <  2.2.3
2.2.3  >  2.2.2
3.10   >  3.2
2.2    <  2.2.1
3.1    =  3.1.0


ver_lt 10.1.2 10.1.20 && echo 'Your version is too old'

Your version is too old

GNU排序有一个选项:

printf '2.4.5\n2.8\n2.4.5.1\n' | sort -V

给:

2.4.5
2.4.5.1
2.8

你们都给出了复杂的解决方案。这里有一个更简单的例子。

function compare_versions {
    local a=${1%%.*} b=${2%%.*}
    [[ "10#${a:-0}" -gt "10#${b:-0}" ]] && return 1
    [[ "10#${a:-0}" -lt "10#${b:-0}" ]] && return 2
    a=${1:${#a} + 1} b=${2:${#b} + 1}
    [[ -z $a && -z $b ]] || compare_versions "$a" "$b"
}

用法:compare_versions <ver_a> <ver_b>

返回代码1表示第一个版本大于第二个版本，2表示小于第二个版本，0表示两者相等。

也是一个非递归的版本:

function compare_versions {
    local a=$1 b=$2 x y

    while [[ $a || $b ]]; do
        x=${a%%.*} y=${b%%.*}
        [[ "10#${x:-0}" -gt "10#${y:-0}" ]] && return 1
        [[ "10#${x:-0}" -lt "10#${y:-0}" ]] && return 2
        a=${a:${#x} + 1} b=${b:${#y} + 1}
    done

    return 0
}

function version_compare () {
  function sub_ver () {
    local len=${#1}
    temp=${1%%"."*} && indexOf=`echo ${1%%"."*} | echo ${#temp}`
    echo -e "${1:0:indexOf}"
  }
  function cut_dot () {
    local offset=${#1}
    local length=${#2}
    echo -e "${2:((++offset)):length}"
  }
  if [ -z "$1" ] || [ -z "$2" ]; then
    echo "=" && exit 0
  fi
  local v1=`echo -e "${1}" | tr -d '[[:space:]]'`
  local v2=`echo -e "${2}" | tr -d '[[:space:]]'`
  local v1_sub=`sub_ver $v1`
  local v2_sub=`sub_ver $v2`
  if (( v1_sub > v2_sub )); then
    echo ">"
  elif (( v1_sub < v2_sub )); then
    echo "<"
  else
    version_compare `cut_dot $v1_sub $v1` `cut_dot $v2_sub $v2`
  fi
}

### Usage:

version_compare "1.2.3" "1.2.4"
# Output: <

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