?
Solved

Shell Script to loop through a file

Posted on 2008-10-28
2
Medium Priority
?
3,218 Views
Last Modified: 2013-12-26
Hi Experts,
 Have a dumb question, i have the following script which loops through a file and takes the word in each line of that file and does a grep on a different file, however instead of grep'ing through every single line it only gives the grep output of the last line.
#!/usr/bin/sh
 
 
# Loop through the file
for i in `cat inp.txt`
do
 
 
echo $i
grep $i it_privilege-export.csv|awk -F "," '{print $1}'
done 
 
 
 
exit 0;

Open in new window

0
Comment
Question by:itsme_asif
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 48

Accepted Solution

by:
Tintin earned 2000 total points
ID: 22828199
I can't see any logical reason why you'd be getting just a single line from grep if you have multiple matches.

BTW, you can replace your script with




grep -f inp.txt it_privilege-export.csv | awk -F, '{print $1}'

Open in new window

0
 

Author Comment

by:itsme_asif
ID: 22828299
Hi , I figured its due to the presence of trailing space in my inp file, i removed using a sed command and things are fine now, thanks for the one liner, thats pretty usefull.
0

Featured Post

On Demand Webinar: Networking for the Cloud Era

Ready to improve network connectivity? Watch this webinar to learn how SD-WANs and a one-click instant connect tool can boost provisions, deployment, and management of your cloud connection.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This Windows batch file is useful for organizing image files from a digital camera or other source, but can have many other uses.  It simply renames the file(s) to match their create date.  For example, if you took a picture today at 1:40pm and the …
The following is a collection of cases for strange behaviour when using advanced techniques in DOS batch files. You should have some basic experience in batch "programming", as I'm assuming some knowledge and not further explain the basics. For some…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
In a recent question (https://www.experts-exchange.com/questions/29004105/Run-AutoHotkey-script-directly-from-Notepad.html) here at Experts Exchange, a member asked how to run an AutoHotkey script (.AHK) directly from Notepad++ (aka NPP). This video…
Suggested Courses
Course of the Month10 days, 16 hours left to enroll

770 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question