Sponsored Content
Full Discussion: Null metacharacter?
Top Forums Shell Programming and Scripting Null metacharacter? Post 97054 by kidcharles on Wednesday 25th of January 2006 02:56:44 PM
Old 01-25-2006
Sure, I thought about that, but that would match *.jpig, *.jpog, *.jpanythingyouwantg, etc. I'm looking for a more exact expression. Obviously your suggestion would work 99.999999% of the time though. I think an even better one would be *.[jJ][pP]?[gG] since ? restricts the wildcard to a single character, but still not quite what I'm looking for.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

compare null with non-null

I've got a very peculiar situation. I'm trying to find out if we can compare null fields with non-null. I've output csv files from SQL and Oracle. I need to compare each field from the files, and then find out any differences. The files usualy have over 500 fields, and send the resule to DBA.... (8 Replies)
Discussion started by: nitin
8 Replies

2. Shell Programming and Scripting

read metacharacter [ and ]

i have command sed sed '/^*$/ d' which don't recognize the how can i solve it? (2 Replies)
Discussion started by: kamel.seg
2 Replies

3. Shell Programming and Scripting

how to use scp with metacharacter

hi i have a file name : file^name that i need to scp to different machine without changing the name scp file^name user@machine/file^name its throwing the error cant use ^name(Something like this) any solution i already tried differnt combinations like "user@machine/file^name"... (2 Replies)
Discussion started by: narang.mohit
2 Replies

4. Shell Programming and Scripting

Insert string 'NULL' where there is a null value

I have an input file having 7 fields delimited by , eg : 1,ABC,hg,1,2,34,3 2,hj,YU,2,3,4, 3,JU,kl,4,5,7, 4,JK,KJ,3,56,4,5 The seventh field here in some lines is empty, whereas the other lines there is a value. How do I insert string NULL at this location (7th loc) for these lines where... (8 Replies)
Discussion started by: zilch
8 Replies

5. Shell Programming and Scripting

grep'ing a variable that contains a metacharacter ($) with a while loop

This is driving me crazy, and I'm hoping someone can help me out with this. I'm trying to do a simple while loop to go through a log file. I'm pulling out all of the lines with a specific log line, getting an ID from that line, and once I have a list of IDs I want to loop back through the log and... (2 Replies)
Discussion started by: DeCoTwc
2 Replies

6. UNIX for Dummies Questions & Answers

/dev/null 2>&1 Versus /dev/null 2>1

How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&" echo "hello" > /dev/null 2>&1 echo "hello" > /dev/null 2>1 (3 Replies)
Discussion started by: glev2005
3 Replies

7. Shell Programming and Scripting

How to remove metacharacter while using wget command

Hi All, While using below command I am getting some unusual character in Release.txt file.How could I remove or stop them to go into Release.txt file wget -q http://m0010v.prod.wspan.com/nggfmonatl/Default.aspx cat Default.aspx|egrep -in "EFS|HOTFIX" | awk -F/ '{print $(NF-1)}'|cut -d... (1 Reply)
Discussion started by: anuragpgtgerman
1 Replies

8. Shell Programming and Scripting

Redirecting standard out to /dev/null goes to file "/dev/null" instead

I apologize if this question has been answered else where or is too elementary. I ran across a KSH script (long unimportant story) that does this: if ; then CAS_SRC_LOG="/var/log/cas_src.log 2>&1" else CAS_SRC_LOG="/dev/null 2>&1" fithen does this: /usr/bin/echo "heartbeat:... (5 Replies)
Discussion started by: jbmorrisonjr
5 Replies

9. Homework & Coursework Questions

metacharacter

how to list all filenames consisting of two lower case letters using metacharacters? (1 Reply)
Discussion started by: rathankumar
1 Replies

10. UNIX for Beginners Questions & Answers

Find command with Metacharacter (*) Should match exact filename

Hi, Below is list of files in my directory. -rw-rw-r--. 1 Roots Roots 0 Dec 26 06:58 12345_kms_report.csv -rw-rw-r--. 1 Roots Roots 0 Dec 26 06:59 12346_kms_report.csv -rw-rw-r--. 1 Roots Roots 0 Dec 26 06:59 12347_kms_report.csv -rw-rw-r--. 1 Roots Roots 0 Dec 26 06:59... (2 Replies)
Discussion started by: Balraj
2 Replies
EvmEventNameMatch(3)					     Library Functions Manual					      EvmEventNameMatch(3)

NAME
EvmEventNameMatch(), EvmEventNameMatchStr() - match EVM event name SYNOPSIS
Library EVM Support Library Parameters pattern The event name pattern sought. The pattern may be any valid event name string. It may include wildcard characters in place of any component. event The event containing the event name to be compared against the pattern. match The result of the match. This operand is set to if the name matches the pattern, and to if it does not. candidate A character string to be matched against the pattern DESCRIPTION
Because special matching rules apply when deciding whether a candidate event name matches a known name, the EVM name matching functions should be used for matching purposes, rather than the C string comparison functions The EVM functions match an event name against a sup- plied pattern, ignoring any trailing appended components in the candidate name, and correctly matching wildcard characters. The function takes an event and an event name pattern as input, and returns an indication of whether the event contains a name which matches the pattern in the match output argument. The pattern may be any valid event name string, and may also include wildcard characters in place of any component. A wildcard in the pattern matches zero or more name components. A matches exactly one component. A match occurs if the event name matches all components indicated by the pattern, even if the name has additional trailing elements. The function performs the same check as but takes a character string as the candidate event name, instead of extracting the candidate event name from a supplied event. Both functions set the match output argument to if the name matches the pattern, and to if it does not. RETURN VALUE
The operation completed without error. The comparison was successful. The value of the match operand indicates whether the name matches the pattern. One of the arguments to the function is invalid. The supplied pattern contains invalid characters. The supplied event does not contain a name. ERRORS
The value of is not set. SEE ALSO
Routines memccpy(3C), strcat(3C). Event Management EVM(5). EVM Events EvmEvent(5). EvmEventNameMatch(3)
All times are GMT -4. The time now is 01:05 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy