举例说明:变量a和b,使用sed的替换命令将$a替换为$b
1.eval sed 's/$a/$b/' filename
2.sed "s/$a/$b/" filename
3.sed 's/'$a'/'$b'/' filename
4.sed s/$a/$b/ filename
转载于:https://blog.51cto.com/1099325/966442
举例说明:变量a和b,使用sed的替换命令将$a替换为$b
1.eval sed 's/$a/$b/' filename
2.sed "s/$a/$b/" filename
3.sed 's/'$a'/'$b'/' filename
4.sed s/$a/$b/ filename
转载于:https://blog.51cto.com/1099325/966442