linux 中sed命令实现单词的精确匹配替换

 

001、

[root@PC1 test03]# ls
a.txt
[root@PC1 test03]# cat a.txt                     ## 测试数据
bookbookbookbook        jjjj
name=jack       uuuuuuu
127.0.0.1       bookbook77
xxxxx.com       eeebookbook
xwowof344       bookbook
bookbook        3333333
[root@PC1 test03]# sed 's/bookbook/Q/g' a.txt     ## 将所有的bookbook替换为Q
QQ      jjjj
name=jack       uuuuuuu
127.0.0.1       Q77
xxxxx.com       eeeQ
xwowof344       Q
Q       3333333

 

002、精确匹配替换

[root@PC1 test03]# ls
a.txt
[root@PC1 test03]# cat a.txt
bookbookbookbook        jjjj
name=jack       uuuuuuu
127.0.0.1       bookbook77
xxxxx.com       eeebookbook
xwowof344       bookbook
bookbook        3333333
[root@PC1 test03]# sed 's/\<bookbook\>/Q/g' a.txt     ## 只对bookbook完整的单词进行替换
bookbookbookbook        jjjj
name=jack       uuuuuuu
127.0.0.1       bookbook77
xxxxx.com       eeebookbook
xwowof344       Q
Q       3333333