Hi,

I am new to programming (shell). I work usually with the bash or t(csh) shell in linux. I do some work which requires handling numerous text files. eg: file1, file2, file3....file'n'. In these 'n' number of files i would like to,
1. Find for a certain number or character and replace it in all the n number of files.
2. Go to a specific line and make changes in it!

Is there any method or trick to do this by writing a shell script?

Thanks in advance!
regards,
vinoj

In your step 2. do you want to edit en certain line interactively with an editor, or the the change known beforehand? Also you need to know its line-number or the text the line you want to edit should contain.

Anyhow, yes, this can be done in a shell script.

Is this home-work?

Hi Hko,

I am glad to receive ur reply. In step 2, I would like to find a known character or number in the a specified line (known) and change it non-interactively. The changes are known beforehand!. I require to run a certain program with different input files. I want to non-interactively enter the file. edit the file name and then run the program. It continues till the 'n' th file which are available.

It is not a home work, it is part of my work which i would like to automate rather than doing things manually. I am a graduate student and am new to linux and shell scripting.

Thanks for your reply.
regards,
vinoj

sed is a tool that can help you do it.

Hi,

Thanks a lot... sed indeed worked!

regards,
vinoj