Visit Our UNIX and Linux User Community


grep problem


 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers grep problem
# 1  
Old 09-05-2001
grep problem

Hi

I would like to know wheather there is anyway to pass a variable to grep argument like this

grep "$myvar" $myfile

i would put this in a function and then call this function by setting different values to myvar and myfile.

is this possible at all.

regards
Hrishy
# 2  
Old 09-05-2001

Yeah, give it a shot, let us know if you have any problems with it! I'm pretty sure what you're describing will work - I have written similar scripts in the past.
# 3  
Old 09-05-2001
try single quotes.
# 4  
Old 09-06-2001
do u folks mean this

Hi

Do you mean to say i can do this using the following.

grep '$myvar' $myfile

regards
Hrishy
# 5  
Old 09-06-2001
you could try it. but from what i recall. by default grep will take 2 arguemnts. and if the argument is part of the metacharter set it ie your "$" will make the next charters a variable.

First: try without any quotes. if that does not work try w/ single quotes around each variable.

also makesure you echo your variable befor the grep statement (just for testing) to make sure you are passing information to the variable.
 

Previous Thread | Next Thread
Test Your Knowledge in Computers #312
Difficulty: Easy
Linus Torvalds created Unix and Git.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

sed Or Grep Problem OR Terminal Problem?

I don't know if you guys get this problem sometimes at Terminal but I had been having this problem since yesterday :( Maybe I overdid the Terminal. Even the codes that used to work doesn't work anymore. Here is what 's happening: * I wanted to remove lines containing digits so I used this... (25 Replies)
Discussion started by: Nexeu
25 Replies

2. Shell Programming and Scripting

Grep problem

Hello. I'm learning shell scripting right now and I'm trying simple scripts. I have a problem with the one below. The idea is to found the number of files containing asd in their name. Here's the code: #!/bin/sh pattern=asd total=0 for f in * do && continue if grep $pattern $f >... (3 Replies)
Discussion started by: EmZvr
3 Replies

3. Shell Programming and Scripting

Problem with grep

I have the following ksh #!/bin/ksh file=$OBS_APP_PATH/config/com/uhg/obs/inbound/configs/XMLFile_ServiceFeeDetail.xml echo $file cntWrd=0 echo $cntWrd cntWrd= grep -c '<serviceFee>' $file echo $cntWrd while executing the above im getting the following error msg:... (2 Replies)
Discussion started by: balesh
2 Replies

4. Shell Programming and Scripting

grep problem

Hi everyone i am facing a strange problem in grep below is the code RC=0 grep $ERROR_MASK $LOG_FILE 2>&1 > /dev/null && RC=1 || RC=0 what does the above statment do i mean it search for error mask into log file and redirect the error to console null then what's the meaning of RC=1 ||... (2 Replies)
Discussion started by: aishsimplesweet
2 Replies

5. UNIX for Dummies Questions & Answers

problem with grep

Hi I am trying to grep a string in a directory which is having 5000 files. PA>> grep -iH 'linc.unisure_pr13n' * bash: /usr/bin/grep: Arg list too long I am getting the error. i also tried PA>> ls -ltr | grep -iH 'linc.unisure_pr13n' * but still i am getting the error Please Advice... (4 Replies)
Discussion started by: subhotech
4 Replies

6. Shell Programming and Scripting

problem with grep |

Hi, When i try this it is not executing either result or total, pls can any one help me in this. max=month_134.log grep result|total $max > log.txt In month_134.log, it should contain either result or total and then send it to log.txt.It should execute result or total in log.txt ... (3 Replies)
Discussion started by: NehaKrish
3 Replies

7. Homework & Coursework Questions

Grep problem

Changed Problem its a sed actually... Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted! 1. The problem statement, all variables and given/known data: Use a sed command to create an output file from the input file. The input... (2 Replies)
Discussion started by: skalidindi
2 Replies

8. Shell Programming and Scripting

GREP problem

I have a problem. Suppose I have a log named transport.log >> tp finished with return code: 203 meaning: wrong syntax in tp call .... tp finished with return code: 0 meaning: Everything ok. << What i want to do is to get the return code of the 1st one. So I would probably do:... (2 Replies)
Discussion started by: kdyzsa
2 Replies

9. UNIX for Dummies Questions & Answers

Grep problem

Hi there, this is a very simple question. When I do grep -c "PWD" filename, I get 5. This means the filename contains 5 lines of "PWD" occurence. I tried to assign to a variable. int= grep -c "PWD" filename When I typed echo $int The output: 5 I get an empty line space. Now I... (1 Reply)
Discussion started by: felixwhoals
1 Replies

10. Shell Programming and Scripting

Grep Problem

I have a large file that I am grepping to find a certain string. grep 'C:\Data\Directory\Test.txt' test.txt It can not find it even though I know it is in there . I know that there is a problem with the backslashes but I can't get it to work. I tried grep... (2 Replies)
Discussion started by: lesstjm
2 Replies

Featured Tech Videos