Visit Our UNIX and Linux User Community

Shell script grep help

Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Shell script grep help
# 1  
Old 08-03-2009
Shell script grep help

Hey there, newbie question :

echo "::kmastat" | /usr/bin/mdb -k | grep Total | grep "kmem_*"
Total [kmem_msb] 17326080 432853 0
Total [kmem_va] 426508288 65458 0
Total [kmem_default] 704757760 1572001732 0
Total [kmem_tsb_default] 1277952 3027965 0
Total [segkmem_ppa] 3145728 23 0

I do this on a solaris box, as a part of my shell script to check the total kernel memory usage ...

I want to eliminate the last "Total [segkmem_ppa]" from the list, without hardcoding as grep -v "Total [segkmem_ppa]" as, i dont know what else might include the string kmem at any point.

Any solution ?
# 2  
Old 08-03-2009

grep -v "Total \[segkmem_ppa\]"
# 3  
Old 08-03-2009
echo "::kmastat" | /usr/bin/mdb -k | grep Total | grep "kmem_*"| head -4

# 4  
Old 08-03-2009
Both of the solutions work, but they are hardcoding according to the current output.

Lets say, we dont know how many kmem_*'s are gonna be there in the op, then head -4 wont work..

If segkmem_* is not the only string with kmem included in it, then my result array will include more elements than i need...

# 5  
Old 08-03-2009
do you want to just remove the last line? try
echo "::kmastat" | /usr/bin/mdb -k | grep Total | grep "kmem_*" | sed '$d'

# 6  
Old 08-03-2009
perhaps you want lines which contains '[kmem_' ?

---------- Post updated at 08:20 PM ---------- Previous update was at 08:19 PM ----------

or rather the one which includes 'Total [kmem_' ?
# 7  
Old 08-03-2009
Yes exactly,
I just want lines that include Total [kmem_*]

But if I do a grep kmem, it ends up showing, strings which include kmem, like [segkmem_*....

Previous Thread | Next Thread
Test Your Knowledge in Computers #948
Difficulty: Easy
A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code.
True or False?

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Speeding up shell script with grep

HI Guys hoping some one can help I have two files on both containing uk phone numbers master is a file which has been collated over a few years ad currently contains around 4 million numbers new is a file which also contains 4 million number i need to split new nto two separate files... (4 Replies)
Discussion started by: dunryc
4 Replies

2. Shell Programming and Scripting

Grep in Shell script

hi guys very new to this game so excuse my ignorance. I need to create a script that simply greps for a text string and then outputs a message depending on whether the text string is there or not. The script I have setup is below, but whenever I run it I get the following error: ... (5 Replies)
Discussion started by: ap2112
5 Replies

3. Shell Programming and Scripting

Shell Script with Grep

Hi guys - below is my script that is checking for current file, size and timestamp. However I added a "grep" feature in it (line in red), but not getting the desired result. I am trying to acheive in output: 1. Show me the file name, timestamp, size and grep'ed words It would be a... (2 Replies)
Discussion started by: DallasT
2 Replies

4. Shell Programming and Scripting

How to grep sql error in shell script and exit the script?

I need help in the following script. I want to grep the sql errors insert into the error table and exit the shell script if there is any error, otherwise keep running the scripts. Here is my script #!/bin/csh -f source .orapass set user = $USER set pass = $PASS cd /opt/data/scripts echo... (2 Replies)
Discussion started by: allinshell99
2 Replies

5. Shell Programming and Scripting

Simple Shell Script to Grep

Hi guys, I have written this script, however the outcome is invalid. It contains grep search that is not needed: Script: #!/bin/bash #this is a test script FILES=$(ls /home/student/bin/dir1/*) GREPFUNC=$(grep -E -i "login|Successfully" ORProxyTC`date '+%m%d%Y'`*.txt/ ${FILES})... (14 Replies)
Discussion started by: DallasT
14 Replies

6. Shell Programming and Scripting

Grep command in shell script

Hi, I have written the following shell script - Error_String="error" var1="| grep -v note1 | grep -v note2" grep -i $Error_String /users/mqm/Pwork/Err/*.out $var1 The above script gives error saying "grep: can't open | grep: can't open grep grep: can't open -v" etc In my program... (3 Replies)
Discussion started by: prasannasupp
3 Replies

7. Shell Programming and Scripting

Grep or Tail in shell script

Hi, I am writing a shell script that checks catalina logs on a production system and mails me if it detects errors. It greps the logs for known errors which i have defined as variables. The problem is the logs are huge, approx 30,000 before they rotate. So I am forced to use grep instead... (3 Replies)
Discussion started by: Moxy
3 Replies

8. Shell Programming and Scripting

grep in Shell script

Hello I do want to write a script which will check any errors say "-error" in the log file then have to send email to the concern person . And the concern person will correct the error . Next time if the script runs eventhough the error has been corrected it will ... (1 Reply)
Discussion started by: Krishnaramjis
1 Replies

9. Shell Programming and Scripting

grep, sed in a shell script

Hi, I have a problem with a simple script I am trying to write. I want a user to type grep, sed commands that are then stored in variables. Those variables are stored in a function, and the function is then called to execute the commands. The idea is that the user does it step by step. ... (4 Replies)
Discussion started by: Trufla
4 Replies

10. Shell Programming and Scripting

Using Grep in a Shell Script

Hi everyone, Im trying to write a Shell script that basically creates a set of files based on a file with many records. For example if a file called dummy has the following content: a.txt 1st line of a's text file 2nd line of a's text file 3rd line of a's text file b.txt 1st line of b's... (8 Replies)
Discussion started by: nbvcxzdz
8 Replies

Featured Tech Videos