sed 多行替换问题

CU_redkey

集合，哈 8楼，攒

kangtadj

8楼 牛逼

hbmhalley

回复 14# dragon23452345


   

3.5.1 Brace Expansion

Brace expansion is a mechanism by which arbitrary strings may be generated. This mechanism is similar to filename expansion (see Filename Expansion), but the file names generated need not exist. Patterns to be brace expanded take the form of an optional preamble, followed by either a series of comma-separated strings or a seqeunce expression between a pair of braces, followed by an optional postscript. The preamble is prefixed to each string contained within the braces, and the postscript is then appended to each resulting string, expanding left to right.

Brace expansions may be nested. The results of each expanded string are not sorted; left to right order is preserved. For example,

     bash$ echo a{d,c,b}e
     ade ace abe

http://www.gnu.org/software/bash/manual/bash.html#Brace-Expansion

cjaizss

sed '1ba;3ba;7ba;8ba;d;:a;........

kangtadj

这个不支持单行啊

sed -e{7}'s/PP-GO/PP-GO1/' /etc/hosts

hbmhalley

回复 17# kangtadj


    {,7}

kangtadj

不对吧
文件内容：
  PP-GO localhost localhost
# Internet host table
#
::1             localhost
127.0.0.1       localhost
111             111     333
10.167.157.114  PP-GO   # Added by DHCP

-----------------------------------------------

sed -e{,7}'s/PP-GO/PP-GO1/' /etc/hosts

  PP-GO1 localhost localhost
# Internet host table
#
::1             localhost
127.0.0.1       localhost
111             111     333
10.167.157.114  PP-GO11 # Added by DHCP


明显错了啊

hbmhalley

回复 19# kangtadj


    不好意思想错了。
    不过 “followed by either a series of comma-separated strings or a seqeunce expression between a pair of braces”
    必须有逗号或..才算 brace expansion

    必须要统一格式么？