Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

how to get the output of a grep command to a file inside a shell script

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers how to get the output of a grep command to a file inside a shell script
# 1  
Old 06-16-2008
how to get the output of a grep command to a file inside a shell script
hi,

i wat to get the output of a grep command in a file. but when i am trying out the same grep command in the unix prompt its working fine.. i am getting the output properly.. but when i am writing the same command inside my shell script , its just creating a new output file with no contents inside.

can anyone help me out with this.

eg: grep -v 'rows' GREP_FILE > GREP_DEST

when i am trying this in the unix prompt i am getting the required output like the GREP_DEST file will have an output with all the lines having 'rows' removed.

when i am giving the same command inside my shell script, its not working..

thanks in advace for all your help..
# 2  
Old 06-16-2008
Any chance there's a cd command in the script, and you're not in the directory you think you are?
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

Python or Shell script to Grep strings from input file and output in csv format

Hi Experts, I am writing a python script to grep string from file and display output in csv file as in attached screenshot https://drive.google.com/file/d/1gfUUdfmQma33tz65NskThYDhkZUGQO0H/view Input file(result_EPFT_config_device) Below is the python script i have prepared as of... (1 Reply)
Discussion started by: as7951
1 Replies

2. Shell Programming and Scripting

Redirecting command output to a file in a shell script

Hello All, I have some unique requirement. I have written a very lengthy script which calls number of resource script to execute a particular task. What I want is output of each command(called from main script and resource scripts) should go to a... (3 Replies)
Discussion started by: anand.shah
3 Replies

3. Shell Programming and Scripting

Can i use if else inside expect command in shell script?

hii,, I am trying to automate jira. during my scripting using bash script, in the terminal i got the terminal message like this: "Configure which ports JIRA will use. JIRA requires two TCP ports that are not being used by any other applications on this machine. The HTTP port is where you... (1 Reply)
Discussion started by: nithinfluent
1 Replies

4. Shell Programming and Scripting

Save output to file - inside a script ?

I'm using the following script to check cisco router health and I'd like to save output to a file, vty_runcmd.sh > /check/check-cisco-health script works and output is saved to a file. However using it in crontab file is created but output is not printed inside it. In crontab, */5 * * * *... (4 Replies)
Discussion started by: marmellata
4 Replies

5. Shell Programming and Scripting

Shell Script to grep output from top command.

Hello, I want a script which would grep details from top command for specific processes. I m not sure of the PID of these processes but i know the names. $ top -c top - 16:41:55 up 160 days, 5:53, 2 users, load average: 9.36, 9.18, 8.98 Tasks: 288 total, 9 running, 279 sleeping, 0... (8 Replies)
Discussion started by: Siddheshk
8 Replies

6. Shell Programming and Scripting

Write Awk output to a file , inside script.

Hi, Can anyone please help me with this issue. I have a Awk command which take file as input, and provides the output having multiple lines, its working in command mode, but not if i plug it in script. #!/bin/ksh infile=a.txt outfile=b.txt awk ' BEGIN{ FS=OFS="|";ORS = "\n";... (1 Reply)
Discussion started by: sp999
1 Replies

7. Shell Programming and Scripting

How to monitor a command inside shell script

Hi All, Is there any way to monitor a command inside shell script ? I have a script inside which I have a tar command which zips around 200GB data. tar zcvf $Bckp_Dir/$Box-BaseBackup-$Day.tar.gz * --exclude 'dbserver_logs/*' --exclude postmaster.pid --exclude 'pg_xlog/*' I want to... (3 Replies)
Discussion started by: sussus2326
3 Replies

8. Shell Programming and Scripting

Error while using sqlplus command inside 'if' condition in an unix shell script

Hi all, I am using the below given sqlplus command in my unix script to invoke a stored procedure which returns a value .It works fine. RET_CODE=$(/opt/oracle/product/10.2.0.4.CL/bin/sqlplus -S $USER/$PASSWD@$DB_NAME <<EOF EXEC MY_PKG.MY_SP (:COUNT); PRINT COUNT; commit; ... (6 Replies)
Discussion started by: Shri123
6 Replies

9. Shell Programming and Scripting

How to give a variable output name in a shell script inside a for loop

Hi all I run my program prog.c in the following way : $ ./prog 1 > output.txt where 1 is a user defined initial value used by the program. But now I want to run it for many a thousand initial values, 1-1000, and store all the outputs in different files. Like $ ./prog 1... (1 Reply)
Discussion started by: alice06
1 Replies

10. Shell Programming and Scripting

how to redirect the output of a grep command to a file inside a shell script

hi, i wat to get the output of a grep command in a file. but when i am trying out the same grep command in the unix prompt its working fine.. i am getting the output properly.. but when i am writing the same command inside my shell script , its just creating a new output file with no contents... (11 Replies)
Discussion started by: kripssmart
11 Replies
Login or Register to Ask a Question