How would i delete a line at specific line number
 

Hi guys ,

I m writing a script to delete a line at particular location.

But i m unable to use variable for specifying line number.
for example.
works fine and deletes 7th line from my file
but
gives following error.

This would have to be covered in the sed one-liners.
Instead of not printing try deleing the line in question

Also, if you are using a variable, the SED command string needs to be in double-quotes.

Thanks for your input . But now i would like to enter a line at specific line number .

How would i establish this using sed.

Have you met the man command or perhaps some of its friends on the web called search engines??

Sorry to be harsh but you have been given a solution which should guide you to what you require just that different options, ie not 'd' for delete,
would need to be used.

Remember that the community exists to educate, not to do the work for you.

Well, now that you've solved the issue about specifying a variable address (using double quotes), you can test with other sed commands as well. For example:
This and many other sed tricks explained here: http://www.grymoire.com/Unix/Sed.html (a must-read)! :)

Hi,

Another good reference would be 'Linux Shell Scripting Tutorial v1.05r3 A Beginner's handbook'.

:hattip:
The above link and others can be found at 'Slackware-Links'. More than just Slackware® links!