sed - stream editor for filtering and transforming text

sed 是十分强大和小巧的文本流编辑器。 sed 是很有用（但常被遗忘）的 UNIX 流编辑器。在以批处理方式编辑文件或以有效方式创建 shell 脚本来修改现有文件方面，它是十分理想的工具。

/pattern/


shell> sed -e 'd' /etc/services
shell> sed -e '1d' /etc/services | more
shell> sed -e '1,10d' /etc/services | more
shell> sed -e '/^#/d' /etc/services | more
shell> sed -e '/regexp/d' /path/to/my/test/file | more
shell> sed -n -e '/regexp/p' /path/to/my/test/file | more
shell> sed -n -e '/BEGIN/,/END/p' /my/test/file | more

shell> sed -e 's/$/\r/' myunix.txt > mydos.txt

shell> sed -e 's/foo/bar/' myfile.txt
shell> sed -e 's/foo/bar/g' myfile.txt
shell> sed -e '1,10s/enchantment/entrapment/g' myfile2.txt
shell> sed -e 's:/usr/local:/usr:g' mylist.txt
shell> sed -e 's/<[^>]*>//g' myfile.html

shell> sed -i 's/regexp/replacement/g' myfile.txt
shell> sed -n '5,10p' myfile.txt

shell> sed -i -e 's/regexp/replacement/g' -e 's/str/newstr/' -e '/re/d' myfile.txt

shell> sed -n -f mycommands.sed myfile.txt


shell> cat oldfile | sed -e "s/testpattern/$REPL/g" > newfile

mycommands.sed

1,20{
    s/[Ll]inux/GNU\/Linux/g
    s/samba/Samba/g
    s/posix/POSIX/g
}

sed

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