Sponsored Content
Full Discussion: Help with Reg. Expression
Top Forums UNIX for Dummies Questions & Answers Help with Reg. Expression Post 302127184 by moe2266 on Monday 16th of July 2007 02:20:15 PM
Old 07-16-2007
Data

Sorry folks;
the first one that you mentioned it didn't mean any thing, it was part of this:

DZERO=${0}
PROG=$(basename ${DZERO})
while [ -h ${DZERO} ]; do
DZERO=$(ls -l ${DZERO} | awk '{print $NF}')
done
PDIR=$(dirname ${DZERO})
if [ ${PDIR} = '.' ]; then
PDIR=${PWD}
elif [ $(expr ${PDIR} : "\(.\).*") != '/'[/B] ]; then
PDIR=${PWD}/${PDIR}
fi
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Awk - Using a Shell Variable in the Reg Expression

Hi all, I have a shell variable $test1 that holds a value derived from some other processing. What I need to do is use that $test1 as the input to a awk regular expression: nawk -F"," -v tester=$test1 ' /tester/{ print $0 } ' $inputFile So what I have is tester... (6 Replies)
Discussion started by: not4google
6 Replies

2. Shell Programming and Scripting

perl reg expression

I have regular expression like this ( replace + with \+) ($mod_server) = ($server =~ /\+/\\+/g); the above is failing with error . what's wrong with it . Thanks (1 Reply)
Discussion started by: talashil
1 Replies

3. Shell Programming and Scripting

Reg expression For

HI system.sysUpTime.0 : Timeticks: (1519411311) 175 days, 20:35:13.11 From the above output i need only 175days in a perl script.. Please Help (2 Replies)
Discussion started by: Harikrishna
2 Replies

4. Shell Programming and Scripting

Python (startswith) reg expression

Hello together, Yesterday I have recieved the script in the forum which works well. This script should insert in the previous line, the line that starts with ";". I'd like this process to recur after any arbitrary sign unless there's a number as a sign at the beginning of a line. Actual... (14 Replies)
Discussion started by: research3
14 Replies

5. Shell Programming and Scripting

awk reg expression

Hello, I have thousand of messages (HL7), I want to use awk to extract only the ones that have a particular value in pv1.18 Each record in the file is the whole HL7 message, ie. when I print $0 I get the whole message MSH EVN PID etc. ,there is an x0d between the segments. I would like to use a... (3 Replies)
Discussion started by: gio001
3 Replies

6. Shell Programming and Scripting

Reg expression

Please let me understand this reg expression (\s+')(.*)('\s+)(.)(.*)(\/.*)/) i have doubt in the below 2.I'm not understanding why back-tick used? (\s+') and ('\s+) (2 Replies)
Discussion started by: dll_fpga
2 Replies

7. Shell Programming and Scripting

reg expression in perl

./GEN_SCR.pl -f ${REP_PATH}/FUNCTIONAL/wide1c_1.0V/max/qor.rpt -o ${REP_PATH}/FUNCTIONAL/GEN2_wide1c_1.0V_max.csv where GEN_SCR.pl is as below...i need to check whether max or min is coming in the argument to the script ...how to do this? ${REP_PATH}/FUNCTIONAL/wide1c_1.0V/max/qor.rpt ... (0 Replies)
Discussion started by: dll_fpga
0 Replies

8. Shell Programming and Scripting

reg expression in perl

how to uniquely match each of the words seperated by / in perl ${REP_PATH}/FUNCTIONAL/wide1c_1.0V/max/qor.rpt https://www.unix.com/images/misc/progress.gif (5 Replies)
Discussion started by: dll_fpga
5 Replies

9. Shell Programming and Scripting

Confusion with Reg expression

I want to make a REG Expression to validate the directory. my dirsample is below: /abc/abc/abc abc/abc/abc abc/abc/abc/ /abc/a bc/abc /a bc/abc/abc /abc/abc/a bc / abc/abc/abc /abc/ abc/abc /abc/.abc /.abc/abc / // /abc /.abc And my code is below: grep -E '^\/(+\/?)+$' dirsample (4 Replies)
Discussion started by: franksunnn
4 Replies

10. Shell Programming and Scripting

REG Expression

Need your help in creating regular expression for particular set. let say I have given two dates 20130623 to 20140625. I need to create regular for the dates which fall in between above two dates. (4 Replies)
Discussion started by: gvkumar25
4 Replies
chroot(1M)																chroot(1M)

NAME
chroot - change root directory for a command SYNOPSIS
newroot command DESCRIPTION
The command executes command relative to the newroot. The meaning of any initial slashes in path names is changed for command and any of its children to newroot. Furthermore, the initial working directory is newroot. Note that command suffixes that affect input or output for the command use the original root, not the new root. For example, the command: locates file relative to the original root, not the new one. The command variable includes both the command name and any arguments. The new root path name is always relative to the current root. Even if a is currently in effect, the newroot argument is relative to the current root of the running process. This command is restricted to users with appropriate privileges. EXTERNAL INFLUENCES
International Code Set Support Single- and multibyte character code sets are supported. WARNINGS
command cannot be in a shell script. Exercise extreme caution when referring to special files in the new root file system. does not search the environment variable for the location of command, so the absolute path name of command must be given. When using to establish a new environment, all absolute path name references to the file system are lost, rendering shared libraries inac- cessible. If continued access to shared libraries is needed for correct operation, the shared libraries and the dynamic loader be copied into the new root environment. SEE ALSO
chdir(2), chroot(2). STANDARDS CONFORMANCE
chroot(1M)
All times are GMT -4. The time now is 11:46 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy