text manipulation script

sunlinux · 05-09-2009, 05:56 AM

Hey programming brains,

I am lokin a script that can take a text file as input and add 0000 at the beginning of each line in that file.

it can be in any lang like shell script or c script

sycamorex · 05-09-2009, 06:02 AM

You could use:

Code:

sed 's/^/0000 /' your_file

sunlinux · 05-10-2009, 11:59 PM

nice input , I checked and found only 1st line (beginning of file) is added with 0000 and nowhere else . It's windows text file I copied in linux seems vi editor considering all text file as 1 line.

is thr any method I can convert a text file as linewise(new line) after every 100 characters .

David the H. · 05-11-2009, 12:14 AM

Windows files use a different kind of line break code from Unix ones. You'll have to convert it before most *nix tools will work properly. There are a multitude of ways to do this, including opening it up in one of the common text editors like kwrite or gedit and resaving it with the unix setting, or using a command-line application like flip.

chrism01 · 05-11-2009, 01:57 AM

or use dos2unix

colucix · 05-11-2009, 03:24 AM

Then add a g for global in the sycamorex's solution:

Code:

sed 's/^/0000 /g' your_file

if you want to edit the file in place, use the -i option. -i.bck makes a backup copy of the original file adding the .bck extension (you can use any extension of your choice).