| @H_502_5@变量设置方式 | @H_502_5@说 @H_502_5@明 | @H_502_5@示例 | |
| ${@H_502_5@变量#@H_502_5@关键字} | @H_502_5@若变量内容从头开始的数据符合“@H_502_5@关键字”@H_502_5@，则将符合的最短数据删除 | A=abc123abc1234aa123bb123cc echo ${A#*abc} @H_502_5@结果：abc123abc1234aa123bb123cc |
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| ##@H_502_5@关键字”@H_502_5@，则将符合的最长数据删除 | A=abc123abc1234aa123bb123cc echo ${A##*abc} @H_502_5@结果：abc123abc1234aa123bb123cc |
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| %@H_502_5@关键字} | @H_502_5@若变量内容从尾向前的数据符合”@H_502_5@，则将符合的最短数据删除 | A=abc123abc1234aa123bb123cc echo ${A%123*} @H_502_5@结果：abc123abc1234aa123bb123cc |
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| %%@H_502_5@关键字”@H_502_5@，则将符合的最长数据删除 | A=abc123abc1234aa123bb123cc echo ${A%%123*} @H_502_5@结果：abc123abc1234aa123bb123cc |
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| /@H_502_5@旧字符串/@H_502_5@新字符串} | @H_502_5@若变量内容符合“@H_502_5@旧字符串”@H_502_5@，则第一个旧字符串会被新字符串替换 | A=abc123abc1234aa123bb123cc echo ${A/abc/ABC} @H_502_5@结果：ABC//@H_502_5@旧字符串”@H_502_5@，则全部的旧字符串会被新字符串替换 |
A=abc123abc1234aa123bb123cc echo ${A//abc/ABC} @H_502_5@结果：123ABC1234aa123bb123cc |
