1.生成测试文本:
peng@peng:~$ cat > aa.txt
aa
bb
cc
dd
ee
^C
2.原本的方案,用vi替换文本:
aa替换成abc
:%s/aa/abc/
3.用sed命令替换文本:
replace aa with abc at the first occurance
sed -i "s/aa/abc/1" aa.txt
3.2.用sed命令替换路径:alternative delimiters
replace pathA with pathB , using alternative delimiters(可选定界符)
sed "s:/usr/local/bin:/bin:" configure.orig
此时 ‘:’ 被认为是定界符