如何解决尝试注释源文件
我正在尝试注释源代码行，以便类似 LANG ='ENG'; 变成 // LANG ='ENG';
源文件中有一千多行，“ ENG”不是唯一的，而是整行。 我放弃了对通配符的疯狂梳理，只是尝试了整个现有的“按原样”行，但没有任何乐趣。 像（注释壳）之类的东西-
enter code here
#!/bin/bash
#if [ -n "$5" ] ; then
#if [ "$5" == "ENG" ] ; then
sed -i "s/' LANG = '\''ENG'\''/\/\/' LANG'
= '\''ENG'\''/" vc.pas > vc.out
#fi
#fi
因此，它减少为一行。不管我尝试什么，都没有喜悦。 TIA！ 豪伊
解决方法
使用GNU sed，使用
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</body>
</html>其中
-
sed -i "s,.*LANG *= *'ENG';.*,//&," vc.pas-启用内联文件修改 -
-i-替换命令 -
s-分隔符 -
,-包含.*LANG *= *'ENG';.*的文本，在LANG = 'ENG';周围有任意空格 -
=-将匹配的行替换为//&和行本身
这对我有用，将所有空格传递到输出：
$ echo "LANG='ENG';" | sed "s#^\(\s*LANG\s*=\s*'ENG'\s*;\)#// \1#"
// LANG='ENG';
$ echo " LANG = 'ENG' ; " | sed "s#^\(\s*LANG\s*=\s*'ENG'\s*;\)#// \1#"
// LANG = 'ENG' ;
从技术上讲，它需要在双引号引起来的字符串中使用双反斜杠，但是由于这些序列都不构成有效的转义序列，因此bash不在乎。
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