如何使用sed替换一行中的几个匹配项?
我有一个带文字的file.log:
sometext1;/somepath1/somepath_abc123/somepath3/file1.a;/somepath1/somepath_abc123/somepath3/file1.o;/somepath1/somepath_abc123/somepath3/file1.cpp; sometext2;/somepath1/somepath_abc123/somepath3/file2.a;/somepath/somepath_abc123/somepath3/file2.o;/somepath1/somepath_abc123/somepath3/file2.cpp;
我正在尝试替换每行中的somepath1/somepath_abc123/somepath3
。
但结果不太可能出错:
sometext1;/mysomepath1/mysomepath2/mysomepath3/file1.cpp; sometext2;/mysomepath1/mysomepath2/mysomepath3/file2.cpp;
正如您所见,sed仅返回最后一场比赛。
我尝试了以下代码:
#!/bin/sh FILE="file.log" OLD="somepath1\/somepath_.*\/somepath3" NEW="mysomepath1\/mysomepath2\/mysomepath3" sed 's|'"$OLD"'|'"$NEW"'|g' $FILE > $FILE.out
表达方式有什么问题?
答案 0 :(得分:3)
尝试使用[^ /]代替。
#!/bin/sh
FILE="file.log"
OLD="somepath1/somepath_[^/]*/somepath3"
NEW="mysomepath1/mysomepath2/mysomepath3"
sed "s|$OLD|$NEW|g" $FILE > $FILE.out
否则,用perl替换sed,它支持类似sed的调用:
#!/bin/sh
FILE="file.log"
OLD="somepath1/somepath_.*?/somepath3"
NEW="mysomepath1/mysomepath2/mysomepath3"
perl -pe "s|$OLD|$NEW|g" $FILE > $FILE.out
在哪里。?与。相同,但它不贪心。
答案 1 :(得分:1)
#!/bin/bash
awk -F";" '
{
for(i=1;i<=NF;i++){
if($i ~ /somepath1.*somepath3/ ){
sub(/somepath1\/somepath_.*\/somepath3/,"mysomepath1/mysomepath2/mysomepath3",$i)
}
}
}
1' OFS=";" file
输出
$ ./shell.sh
sometext1;/mysomepath1/mysomepath2/mysomepath3/file1.a;/mysomepath1/mysomepath2/mysomepath3/file1.o;/mysomepath1/mysomepath2/mysomepath3/file1.cpp;
sometext2;/mysomepath1/mysomepath2/mysomepath3/file2.a;/somepath/somepath_abc123/somepath3/file2.o;/mysomepath1/mysomepath2/mysomepath3/file2.cpp;