Removing arbitrary text from a file

[jouell]

Hi.

I would like to remove arbritary text from a file, ideally acting on one file in place.

IE

this file:

2+12345+/bin/cat /etc/passwd | /bin/grep -i bash
3+14445+/bin/cat /etc/svc.conf | /bin/grep -i telnet
4+17376+/bin/cat /etc/hosts | /bin/grep -i server


becomes

2+12345+/bin/cat /etc/passwd | /bin/grep -i bash
4+17376+/bin/cat /etc/hosts | /bin/grep -i server


by removing the middle line (but I can't assume an order to the lines or that they will be incremental)

Any ideas?

I really like to act on the one file in place. I can do this in sed with 2 files easily, and I can't figure out how to do it in ed. I am open to awk or anything else that can act on the file in place. I am using Linux, BTW...

Thanks!
-john

 

[Chacalinc]

and [tt]vi[/tt]?



Chacal, Inc.

 

[feherke]

Hi

GNU [tt]sed[/tt] 4.1.2 can do this :

-i[SUFFIX], --in-place[=SUFFIX] edit files in place (makes backup if extension supplied)

Feherke.

http://rootshell.be/~feherke/

 

[p5wizard]

something like this?

ed file <<eof_ed
/grep -i telnet$/ d
w
q
eof_ed

/search criteria/ d delete line with first occurence of your search criteria
w writes the file back, less your deleted file
q leaves ed command

HTH,

p5wizard