sed 替换

sudo sed -i ’s/dapper/edgy/g’ /etc/apt/sources.list

替换 sources.list 中所有 dapper 为 edgy

-i edit files in place (makes backup if extension supplied)

’s/a/b/g’ 替换 a 为 b，g 正则全局。

find /etc/apt/ -type f -exec sed -i ’s/dapper/edgy/g’ {} +

查找 /etc/apt/ 下所有 f类型文件，执行 sed 替换。

find -type 参数：

b block (buffered) special

c character (unbuffered) special

d directory

p named pipe (FIFO)

f regular file

l symbolic link; this is never true if the -L option or the -follow option is in effect, unless the

symbolic link is broken. If you want to search for symbolic links when -L is in effect, use

-xtype.

s socket

D door (Solaris)

find /etc/apt/ -type f -exec sed -i.bak ’s/dapper/edgy/g’ {} ;

产生备份文件

info sed

查看 sed 帮助信息