Creating a new file from other files names using grep and cut

[baggetta]

I want to create a new file name based on reading and grepping for a word in an existing file.

Example script:
#/bin/ksh
grep "*IUNB" file1.xxx.edw > r.out
cut -c 6-10 r.out > r.in

r.out = *IUNBCHERA ZZ FASJRIV Z
Z UNOA22003090911521002 '+:

r.in = CHERA

I would like the new file to be called:
"a-rivCHERA.edw" The extention of the new file needs to be the same as the source file in the inital grep command.
The "a-riv" can be hardcoded somewhere.

 

[hallux]

baggetta,
To create a blank file as described,
[blue]touch a-riv`cat r.in`.edw[/blue]

The a-riv part is hard-coded and the `cat r.in` piece pulls in the contents of r.in, which in this case is CHERA.

If you meant to rename r.in to the new file name, just use the mv command:
[blue]mv r.in a-riv`cat r.in`.edw[/blue]

-Hallux

 

[baggetta]

thanks for the tip hallux, but one problem, the data in the new file is 0 bytes because of the touch command. I need to keep the data from the original file (t.edw). I tried to use the cat command after the touch but I'm not getting the results I need. Can you help me out futher?

This is what I have:
#/bin/ksh
grep "*IUNB" t.edw > r.out
cut -c 6-10 r.out > r.in
touch a-riv`cat r.in`.edw

 

[baggetta]

Never mind, I see what you meant by using the mv command after it...

#/bin/ksh
grep "*IUNB" t.edw > r.out
cut -c 6-10 r.out > r.in
touch a-riv`cat r.in`.edw
mv t.edw a-riv`cat r.in`.edw

Is there any way of shortening this?

 

[hallux]

baggetta,
Yes it can be improved, shortened. I suggest submitting that question to the UNIX Scripting forum for help from people who write scripts for *NIX all of the time.
-Hallux