Linux指令篇:字串处理--expr
发表于:2007-07-04来源:作者:点击数:
标签:
名称:expr
### 字串长度
shell>> expr length "this is a test"
14
### 数字商数
shell>> expr 14 % 9
5
### 从位置处抓取字串
shell>> expr substr "this is a test" 3 5
is is
### 数字串 only the first character
shell>> expr index "testforthegame" e
2
### 字串真实重现
shell>> expr quote thisisatestformela
thisisatestformela
原文转自:http://www.ltesting.net