awk variables in regex expression ? Post: 302486131

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Replace if regex on specific column matches expression?

I am attempting to convert rewrite rules to Nginx, and since due to the mass amount of rewrites we must convert, I've been trying to write a script to help me on a specific part, easily. So far I have this: rewrite ^action/static/(+)/$ staticPage.php?pg=$1&%$query_string; What I want done...

2. Shell Programming and Scripting

Regular expression (regex) required

I want to block all special characters except alphanumerics.. and "."(dot ) character currently am using // I want to even block only single dot or multiple dots.. ex: . or .............. should be blocked. please provide me the reg ex. ---------- Post updated at 05:11 AM...

3. Shell Programming and Scripting

Creating a regex expression

Good morning all!! In my code I and looking through file /etc/syslog.congf and printing every line that has /var/log in it. I need to turn the if 9$line) into a regex code instead. #!/usr/bin/perl @file= 'cat /etc/syslog.conf'; //when foreach $line (@file){ if ($line =~...

4. Shell Programming and Scripting

help with simple regex expression

I am trying to grep the following line in a file using a bash shell: (..) admin1::14959:::::: (..) It works with the following expression (as expected) # cat file | grep ^*:: admin1::14959:::::: but it does not work with (not expected) # cat /etc/shadow | grep ^+:: I assume the...

5. Shell Programming and Scripting

passing a regex as variable to awk and using that as regular expression for search

Hi All, I have a sftp session log where I am transferring multi files by issuing "mput abc*.dat". The contents of the logfile is below - ################################################# Connecting to 10.75.112.194... Changing to: /home/dasd9x/testing1 sftp> mput abc*.dat Uploading...

6. Emergency UNIX and Linux Support

Regular expression (regex) clean up text

Hi, Server - MEDIAWIKI - MYSQL - CENTOS 5 - PHP5 I have a database import of close to a million pages into my wiki, mediawiki site, the format that were left with is not pretty, and I need to find a way to clean this up and present it nicely... I think regex is the best option as I can...

7. Shell Programming and Scripting

Hi im new to bash scripting I want to know what does the regex expression do ??

# check host value regex='^(||1|2|25)(\.(||1|2|25)){3}$' if ')" != "" ]; then if ]; then echo host $host not found exit 4 fi elif ]; then echo $host is an invalid host address exit 5 fi

8. Shell Programming and Scripting

awk regex expression works in AIX but not in Linux

I have following expression: echo "Sun 12 Jul BST 2014\nSun 12 Jul 2014\nSun 12 Jul IS 2014" | awk '/(Sun)+( 12)+( Jul )+({3} )?(2014)/{print;}' I ran above code in AIX box and output is as follows Sun 12 Jul BST 2014 Sun 12 Jul 2014 I ran above code in Linux box and output is as...

9. UNIX for Beginners Questions & Answers

Regex Expression Replace

I have a XML file where there is a tag with like <wd:address_line_1>1234 Street</wd:address_line_1> I want to replace the values "1234 Street" with "Test Data". Different people have different address lines and i want to replace with a fixed value to mask the file. I was trying to use sed...

10. UNIX for Beginners Questions & Answers

Sed: -e expression #1, char 20: unterminated address regex

I am trying to add word in last of particular line. the same command syntex is running on prompt. but in bash script give error."sed: -e expression #1, char 20: unterminated address regex" Please help. for i in `cat servername`; do ssh -q -t root@$i sed -i '/simple_allow_groups =/s/$/,...

LEARN ABOUT LINUX

openvt

OPENVT(1)							     Linux 1.x								 OPENVT(1)

NAME

       openvt - start a program on a new virtual terminal (VT).

SYNOPSIS

       openvt [-c vtnumber] [-s] [-u] [-l] [-v] [--] command command_options

DESCRIPTION

       openvt  will  find the first available VT, and run on it the given command with the given command options, standard input, output and error
       are directed to that terminal. The current search path ($PATH) is used to find the requested command. If no command is specified  then  the
       environment variable $SHELL is used.

   OPTIONS
       -c vtnumber
	      Use the given VT number and not the first available. Note you must have write access to the supplied VT for this to work.

       -f     Force opening a VT without checking whether it is already in use.

       -e     Directly execute the given command, without forking.  This option is meant for use in /etc/inittab.  If you want to use this feature
	      in another context, be aware that openvt has to be a session leader in order for -e to work.  See setsid(2) or setsid(1) on  how	to
	      achieve this.

       -s     Switch to the new VT when starting the command. The VT of the new command will be made the new current VT.

       -u     Figure out the owner of the current VT, and run login as that user.  Suitable to be called by init. Shouldn't be used with -c or -l.

       -l     Make the command a login shell. A - is prepended to the name of the command to be executed.

       -v     Be a bit more verbose.

       -w     wait  for command to complete. If -w and -s are used together then openvt will switch back to the controlling terminal when the com-
	      mand completes.

       --     end of options to openvt.

NOTE

       If openvt is compiled with a POSIX (GNU) getopt() and you wish to set options to the command to be run, then you must  supply  the  end	of
       options -- flag before the command.

EXAMPLES

       openvt can be used to start a shell on the next free VT, by using the command:

       openvt bash

       To start the shell as a login shell, use:

       openvt -l bash

       To get a long listing you must supply the -- separator:

       openvt -- ls -l

HISTORY

       Earlier, openvt was called open.  It was written by Jon Tombs <jon@gtex02.us.es or jon@robots.ox.ac.uk>.  The -w idea is from "sam".

SEE ALSO

       chvt(1), doshell(8), login(1)

19 Jul 1996							       V1.4								 OPENVT(1)

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Replace if regex on specific column matches expression?

Discussion started by: EXT3FSCK

2. Shell Programming and Scripting

Regular expression (regex) required

Discussion started by: shams11

3. Shell Programming and Scripting

Creating a regex expression

Discussion started by: bigben1220

4. Shell Programming and Scripting

help with simple regex expression

Discussion started by: schms