Say I have a text file, namely, files.txt.
And in files.txt I have a list of paths, for instance:
/home/user/qwe
/home/user/asd
/home/user/zxc
I want to be able to move one line to another line, for instance:
/home/user/asd
/home/user/qwe
/home/user/zxc
I have tried to use these commands to do that. The first one works. But the second one doesn’t work because of the forward slash:
sed -i "2d" /home/user/files.txt
sed -i "/^'/home/user/asd'/i '/home/user/qwe/'" /home/user/files.txt
I have tried using temporary variable with single quotes to indicate literal string but it still won’t work (it is actually to be used using variable). Also I have tried using an arbitrary character to replace the forward slash because sed doesn’t care in some cases but it’s different this time.
How I might be able to achieve that using sed?
>Solution :
Use sed`s pattern space and hold space:
sed '1{h;d}; 2{p;x}' file
Output:
/home/user/asd /home/user/qwe /home/user/zxc
See: man sed