我们一般情况下使用最频繁的sed命令便是替换命令:s 1、基本语法: sed'[address-range|pattern-range] s/original-string/replacement-string/[substitute-flags]'inputfile 地址范围address-range和模式范围pattern-range是可选的,如果没有指定则会在所有的行上执行替
# 替换文件中的第一行中的"old_string"为"new_string" 1s/old_string/new_string/ # 从第3行到第5行,替换"foo"为"bar" 3,5s/foo/bar/g # 删除包含"delete_this_line"的行 /delete_this_line/d # 在包含"insert_before"的行之前插入新行 /insert_before/i\ This is the new line to insert #...
s command (substitute) 同样, 不会改变原文件。 # 语法sed'[address-range|pattern-range] s/originalstring/replacement-string/[substitute-flags]'inputfile [address-range|pattern-range]: optional originalstring can be a regex [substitute-flags]: optional # replace all Jason to Jacksed's/Jason/Jack/...
sed ‘ [ address-range | pattern-range ] s/original-string/replacement-string/[substitute-flags] ’input-file l address-range或pattern-range（即地址范围和模式范围）是可选的，如果没有指定，那么sed将在所有⾏上进⾏替换 l s即执⾏替换命令substitute l original-string是被sed搜索然后被替换的字符...
There are four parts to this substitute command: s Substitute command /../../ Delimiter one Regular Expression Pattern Search Pattern ONE Replacement string The search pattern is on the left hand side and the replacement string is on the right hand side. ...
locate command is used to locate files locate command uses datebases to locate files locate command can also use regex for searching ~ 把每行中第二次出的locate替换为find [root@sishen ~]# sed 's/locate/find/2' substitute-locate.txt
不能使用单引号把替换模式括起来,例如 '/pattern/command/' 要改成 "/pattern/commond". 因为在Bash shell里面,单引号不支持扩展,$在单引号里面还是表示'$'字符自身,并不表示获取变量的值,无法用${param}来引用变量param的值。 实际上是由 bash 自身通过$来获取变量值,进行变量扩展后,再把变量值作为参数传递...
s选项通知s e d这是一个替换操作,并查询pattern-to-find,成功后用replacement-pattern替换它。 替换选项如下: g 缺省情况下只替换第一次出现模式,使用g选项替换全局所有出现模式。 p 缺省s e d将所有被替换行写入标准输出,加p选项将使- n选项无效。- n选项不打印输出结果。
sed 最常用的command是替换(s命令) 替换命令可以处理 修改 删除(将内容替换为空) s command flags标志列表 The s command can be followed by zero or more of the following flags: g Apply the replacement toallmatches to theregexp, not just the first. ...
The lsvfs(1) command can be used to find out the types of file systems that are available on the system. In addition, there are two pseudo-types, “local” and “rdonly”. The former matches any file system physically mounted on the system where the find is being executed and the ...