Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Escaping backslash and asterisk in egrep to match "\*"
Top Forums Shell Programming and Scripting Escaping backslash and asterisk in egrep to match "\*" Post 302773811 by matthewfs on Thursday 28th of February 2013 05:38:55 PM
Old 02-28-2013
Quote:
Originally Posted by Don Cragun
Without knowing what you're trying to match, what your input looks like, and what output you're trying to get, there isn't much we can do to help.
IM trying to match "\*" as a parameter when running a script. The input is "\*". I have the if statement already i just need the regular expression to not return a empty string.
Code:
elif [ "$(echo $domain | egrep '^(\\)\*$')" != "" ]; then

---------- Post updated at 05:38 PM ---------- Previous update was at 05:37 PM ----------

Quote:
Originally Posted by Chubler_XL
What you have appears to work fine for me:

Code:
$ cat testit
\*
$ od -c testit
0000000   \   *  \n
0000003
$ egrep '^(\\)\*$' testit
\*

THats what i thought but when i run my script and parameter as "/*" i don't get he output i want. THe output i want is this echo in this if statement.

Code:
elif [ "$(echo $domain | egrep '^(\\)\*$')" != "" ]; then
        echo $domain is a * wilcard

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Explain the line "mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`"

Hi Friends, Can any of you explain me about the below line of code? mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'` Im not able to understand, what exactly it is doing :confused: Any help would be useful for me. Lokesha (4 Replies)
Discussion started by: Lokesha
4 Replies

2. UNIX for Dummies Questions & Answers

search ")" with egrep - egrep: syntax error

Hi Guys, we have a shell script which basically query the Database which retrieves huge data and use the data with "egrep" . Now there is some data which contains characters like "abc)" and the same is used like below : "egrep (.+\|GDPRAB16\|GDPR/11702 96 abc)\|$ temp.txt" now while... (7 Replies)
Discussion started by: sagarjani
7 Replies

3. UNIX for Dummies Questions & Answers

How to use the "grep/egrep" command to search files.

Hi Team, I am new to this forum and also trying to learn Unix. I will highly appriciate your help if you can help me to get the right command . {{{ I use the command " today | egrep '(10:| 11: )' | grep ERROR " to grep all the files that has been error betweeen 10 to 11... (6 Replies)
Discussion started by: rkhanal
6 Replies

4. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone... (7 Replies)
Discussion started by: shis100
7 Replies

5. Shell Programming and Scripting

Disabling Backslash Interpretation with "echo -E"?

Hello All, In a Bash Script I'm writing I have a section where I loop through a text file that was outputted by another script. In the text file some of the strings in there are enclosed with the BOLD "character sequences" (i.e. "\033But it's weird, because if I run this command: echo -E... (12 Replies)
Discussion started by: mrm5102
12 Replies

6. Shell Programming and Scripting

sed command escaping backslash "/"

Hello friends/'unix experts', i have a file as below cat sample.txt satish /rakesh/ sandhya /sandeep/ i have to replace /rakesh/ with rakesh, how can i do it with sed, i tried below code but its throwing errors sed -e 's/'"\(/rakesh/)\"'/\1rakesh/g' sample.txt ... (1 Reply)
Discussion started by: only4satish
1 Replies

7. UNIX for Dummies Questions & Answers

Egrep confusion with "I" and "-I" pattern

I am executing following command egrep -w I filename.txt the filename.txt has following data .... -I 07-18 08:31:19.924 9880 6 SessionManager ConnectConfig: ConfigurationWebService LoginResults=SuccessfulLogin I am so hungry that I need to eat I expect egrep to print only the second... (1 Reply)
Discussion started by: VBG
1 Replies

8. UNIX for Advanced & Expert Users

AIX - io info get from "libperfstat" not match "iostat"

Hi, everyone. I need to write a program to get io info based on libperfstat. But the "write time" of a disk is just half of the value get from iostat. I'm confused and can't explain. Help please. How I calculate "write service time per sec": In iostat: write service... (0 Replies)
Discussion started by: jackliang
0 Replies

9. Shell Programming and Scripting

Bash script - Print an ascii file using specific font "Latin Modern Mono 12" "regular" "9"

Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt where : print_cmd ::= some printing... (1 Reply)
Discussion started by: jcdole
1 Replies

10. Shell Programming and Scripting

Search file containing ps results for a match "my.cnf" and then for a second match . "ok:" and

I need to find two matches in the output from ps. I am searching with ps -ef |grep mysql for: my.cnf /bin/sh /usr/bin/mysqld_safe --defaults-file=/data/mysql/master/agis_core/etc/my.cnf after this match I want to search back and match the hostname which is x number of lines back, above the... (2 Replies)
Discussion started by: bash_in_my_head
2 Replies

LEARN ABOUT V7

asadmin-stop-domain

asadmin-stop-domain(1AS)					   User Commands					  asadmin-stop-domain(1AS)

NAME

       asadmin-stop-domain, stop-domain - stops the given domain

SYNOPSIS

       stop-domain [--domaindir install_dir/domains][--terse=false] [--echo=false] [domain_name]

       stop-domain  stops the specified domain. If there is only one domain in the default domain directory (install_dir/domains), then no operand
       is required to stop the domain. However, if there is more than one domain, the domain operand must be specified. This command is  supported
       in local mode only.

OPTIONS

       --domaindir	       directory where the domain is to be stopped. If specified, path must be accessible in the filesystem. If not speci-
			       fied, the domainis stopped in the default install_dir/domains directory.

       --terse		       indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well-
			       formatted data for consumption by a script. Default is false.

       --echo		       setting to true will echo the command line statement on the standard output. Default is false.

OPERANDS

       domain_name	       name of the domain. Must be a unique name.

       Example 1: Using stop-domain

       asadmin> stop-domain sampleDomain
       Stoping Domain sampleDomain, please wait
       Domain sampleDomain stopped
       Command stop-domain executed successfully

       Where: the sampleDomain domain in the default domains directory is stopped.

EXIT STATUS

       0		       command executed successfully

       1		       error in executing the command

       asadmin-create-domain(1AS), asadmin-delete-domain(1AS), asadmin-start-domain(1AS), asadmin-list-domains(1AS)

J2EE 1.4 SDK							    March 2004						  asadmin-stop-domain(1AS)
All times are GMT -4. The time now is 10:04 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy