Linux 如何在每行的开头添加添加文本？
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how i can add Add text at the beginning of each line?
提问by Osama Ahmad
how i can add Add text at the beginning of each line?
如何在每行的开头添加添加文本？
for example:- i have file contain:-
例如：- 我有文件包含：-
/var/lib/svn/repos/b1me/products/payone/generic/code/core
/var/lib/svn/repos/b1me/products/payone/generic/code/fees
/var/lib/svn/repos/b1me/products/payone/generic/code/2ds
i want it to become:-
我希望它变成：-
svn+ssh://svn.xxx.com.jo/var/lib/svn/repos/b1me/products/payone/generic/code/core
svn+ssh://svn.xxx.com.jo/var/lib/svn/repos/b1me/products/payone/generic/code/fees
svn+ssh://svn.xxx.com.jo/var/lib/svn/repos/b1me/products/payone/generic/code/2ds
in other word i want to add "svn+ssh://svn.xxx.com.jo" at the beginning of each line of this file
换句话说，我想在这个文件的每一行的开头添加“svn+ssh://svn.xxx.com.jo”
采纳答案by Manoj Govindan
One way to do this is to use awk.
一种方法是使用awk.
awk '{ printf "svn+ssh://svn.xxx.com.jo"; print }' <filename>
If you want to modify the file in place, you can use sedwith the -iswitch.
如果要就地修改文件，可以sed配合-i开关使用。
sed -i -e 's_.*_svn+ssh://svn.xxx.com.jo&_' <filename>
回答by ghostdog74
ruby -pne 'sub(/^/,"svn+ssh://svn.xxx.com.jo")' file
回答by hluk
Simple way:
简单的方法：
sed -i 's_._svn+ssh://svn.xxx.com.jo_' <filename>
回答by Majid Azimi
It can also be done with Perl:
也可以用 Perl 来完成：
perl -pe 's#^#svn+ssh://svn.xxx.com.jo#' input.file
回答by kenorb
Using sed:
使用sed：
printf "line1\nline2\n" | sed "s/^/new text /"
Using ex:
使用ex：
printf "line1\nline2\n" | ex -s +"%s/^/foo bar /e" +%p -cq! /dev/stdin
Using vim:
使用vim：
printf "line1\nline2\n" | vim - -es +"%s/^/foo bar /e" +%p -cq!
Using shell:
使用外壳：
printf "line1\nline2\n" | while read line; do echo foo bar $line; done
