The SAP Toolbar control Jack wu
2010-08-24 10:40
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1.10 ksh和bash中的变量编辑
操作符 | 解释 |
---|---|
${variable#pattern} | 删除匹配variable值头部的pattern的最短部分 |
${variable##pattern} | 删除匹配variable值头部的pattern的最长部分 |
${variable%pattern} | 删除匹配variable值尾部的pattern的最短部分 |
${variable%%pattern} | 删除匹配variable值尾部的pattern的最长部分 |
var=/home/tmp/work/file.a.el则 echo ${var#/*/} # tmp/work/file.a.el echo ${var##/*/} # file.a.el echo ${var%.*} # /home/tmp/work/file.a echo ${var%%.*} # /home/tmp/work/file echo ${var%/*} # /home/tmp/work可以用于取出目录值
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