Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

Need help with Regular Expressions

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting Need help with Regular Expressions
# 1  
Old 04-16-2009
Need help with Regular Expressions
Hi,

In ksh, I am trying to compare folder names having -141- in it's name.
e.g.: 4567-141-8098 should match this expression '*-141-*'
but, -141-2354 should fail when compared with '*-141-*'
simlarly, abc should fail when compared with '*-141-*'
I tried multiple things but nevertheless, everything failed.
It would be great if someone can help me on this.

Thanks and Regads.
# 2  
Old 04-16-2009
Show what you have tried and how they failed and we can point you in the right direction.
# 3  
Old 04-16-2009
Quote:
1. if [ $PARAM_SIX = "[*]-141-[*]" -a $SRC_DIR = "[*]-141-[*]" ]

> echo abc | grep '*-141-*'
> echo $?
1
> echo 122-141-234 | grep '*-141-*'
> echo $?
1
I beleive I can do something with grep, but just not getting any directions on how to go ahead.
Thanks for your help.

Thanks and Regards
# 4  
Old 04-16-2009
grep on '-141-' should be sufficient. The backslash or the double minus sign prevents grep to treat the regexp as an option, but not all versions of grep support them both:

Code:
grep -- '-141-'

or:

Code:
grep '\-141-'

Regards
# 5  
Old 04-16-2009
Thanks a tonne for that help. Besides the pattern issue, there was anoher mistake that I did. I configured one wrong paramter in the if condition and as it was and operation, it was bound to fail. Smilie
Thanks very much for your help and time. Much appreciated !!

Thanks and Regards.
# 6  
Old 04-20-2009
Hi Guru's,

Following approach worked for me.

Quote:
LD_CLIENT='*-141-*'
ls -ld $USR_HOME/$LD_CLIENT | grep $PARAM_SIX
SRC_LD=$?
ls -ld $USR_HOME/$LD_CLIENT | grep $ID_DEST
DEST_LD=$?
if [ $SRC_LD -eq 0 -a $DEST_LD -eq 0 ]
then
echo 'It works'
else
echo 'Keep trying'
fi
Thanks once again
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Regular expressions

I need to pick a part of string lets stay started with specific character and end with specific character to replace using sed command the line is like this:my audio book 71-skhdfon1dufgjhgf8.wav' I want to move the characters beginning with - end before. I have different files with random... (2 Replies)
Discussion started by: XP_2600
2 Replies

2. Shell Programming and Scripting

Regular Expressions

I am new to shell scripts.Can u please help me on this req. test_user = "Arun" if echo "test_user is a word" else echo "test_user is not a word" (1 Reply)
Discussion started by: chandrababu
1 Replies

3. Shell Programming and Scripting

Help with regular expressions

I have a file that I'm trying to find all the cases of phone number extensions and deleting them. So input file looks like: abc x93825 def 13234 x52673 hello output looks like: abc def 13234 hello Basically delete lines that have 5 numbers following "x". I tried: x\(4) but it... (7 Replies)
Discussion started by: pxalpine
7 Replies

4. Shell Programming and Scripting

Regular Expressions

#!/usr/bin/perl $word = "one last challenge"; if ( $word =~ /^(\w+).*\s(\w+)$/ ) { print "$1"; print "\n"; print "$2"; } The output shows that "$1" is with result one and "$2" is with result challenge. I am confused about how this pattern match expression works step by step. I... (8 Replies)
Discussion started by: DavidHe
8 Replies

5. UNIX for Dummies Questions & Answers

Regular expressions

In regular expressions with grep(or egrep), ^ works if we want something in starting of line..but what if we write ^^^ or ^ for pattern matching??..Hope u all r familiar with regular expressions for pattern matching.. (1 Reply)
Discussion started by: aadi_uni
1 Replies

6. UNIX for Advanced & Expert Users

Regular Expressions

Hi, below is a piece of code written by my predecessor at work. I'm kind of a newbie and am trying to figure out all the regular expressions in this piece of code. It is really a tough time for me to figure out all the regular expressions. Please shed some light on the regular expressions... (3 Replies)
Discussion started by: ramky79
3 Replies

7. Shell Programming and Scripting

regular expressions

Hello, Let say I have a string with content "Free 100%". How can extract only "100" using ksh? I would this machanism to work if instead of "100" there is any kind of combination of numbers(ex. "32", "1238", "1"). I want to get only the digits. I have written something like this: ... (4 Replies)
Discussion started by: whatever
4 Replies

8. UNIX for Dummies Questions & Answers

regular expressions

Hi Gurus, I need help with regular expressions. I want to create a regular expression which will take only alpha-numeric characters for 7 characters long and will throw out an error if longer than that. i tried various combinations but couldn't get it, please help me how to get it guys. ... (2 Replies)
Discussion started by: ragha81
2 Replies

9. Shell Programming and Scripting

Help with regular expressions

I have following content in the file CancelPolicyMultiLingual3=U|PC3|EN RestaurantInfoCode1=U|restID1|1 ..... I am trying to use following matching extression \|(+) to get this PC3|EN restID1|1 Obviously it does not work. Any ideas? (13 Replies)
Discussion started by: arushunter
13 Replies

10. Programming

regular expressions in c++

How do I use the regular expressions in c++? (2 Replies)
Discussion started by: szzz
2 Replies
Login or Register to Ask a Question