请教 怎么样用sed在行首插入字符

wangrujun

awk 比较简单：

awk '{print 1, $0}'

不知道 sed怎么样做。

大蚂蚁

你的 awk 代码应该是首列插入的吧？

vegetablebird

试试：
sed 's/^/add sth. at the beginning of each line/'

toarms

[k@korg tmp]$ cat tt
include /usr/share/xpdf/japanese/add-to-xpdfrc
include /usr/share/xpdf/korean/add-to-xpdfrc
include /usr/share/xpdf/chinese-simplified/add-to-xpdfrc
include /usr/share/xpdf/chinese-traditional/add-to-xpdfrc
[k@korg tmp]$ sed -i 's/^/aa/' tt
[k@korg tmp]$ cat tt
aainclude /usr/share/xpdf/japanese/add-to-xpdfrc
aainclude /usr/share/xpdf/korean/add-to-xpdfrc
aainclude /usr/share/xpdf/chinese-simplified/add-to-xpdfrc
aainclude /usr/share/xpdf/chinese-traditional/add-to-xpdfrc
[k@korg tmp]$ sed -i 's/^aa//' tt
[k@korg tmp]$ cat tt
include /usr/share/xpdf/japanese/add-to-xpdfrc
include /usr/share/xpdf/korean/add-to-xpdfrc
include /usr/share/xpdf/chinese-simplified/add-to-xpdfrc
include /usr/share/xpdf/chinese-traditional/add-to-xpdfrc

寂寞烈火

原帖由 wangrujun 于 2005-12-19 20:19 发表
awk 比较简单：

awk '{print 1, $0}'

不知道 sed怎么样做。

看一下置顶十二篇之SED,就知道了 @_@

wangrujun

原帖由 大蚂蚁 于 2005-12-19 20:56 发表
你的 awk 代码应该是首列插入的吧？

是的。

wangrujun

原帖由 vegetablebird 于 2005-12-19 20:56 发表
试试：
sed 's/^/add sth. at the beginning of each line/'

谢谢

wangrujun

原帖由 toarms 于 2005-12-19 23:36 发表
[k@korg tmp]$ cat tt
include /usr/share/xpdf/japanese/add-to-xpdfrc
include /usr/share/xpdf/korean/add-to-xpdfrc
include /usr/share/xpdf/chinese-simplified/add-to-xpdfrc
include /usr/share/xpdf ...

非常感谢　

wangrujun

原帖由 寂寞烈火 于 2005-12-19 23:40 发表

看一下置顶十二篇之SED,就知道了 @_@

谢谢　@_@