Sponsored Content
Top Forums Shell Programming and Scripting help with simple regex expression Post 302481144 by Chubler_XL on Thursday 16th of December 2010 08:59:01 PM
Old 12-16-2010
Or # cat /etc/shadow | egrep ^[a-z0-9]+::

Or # cat /etc/shadow | grep ^[a-z0-9][a-z0-9]*::
This User Gave Thanks to Chubler_XL For This Post:
 

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... (5 Replies)
Discussion started by: EXT3FSCK
5 Replies

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... (10 Replies)
Discussion started by: shams11
10 Replies

3. UNIX for Advanced & Expert Users

Regular expression / regex substition on Unicode text

I have a large file encoded in Unicode that I need to convert to CSV. In general, I know how to do this by regular expression substitutions using sed or Perl, but one problem I am having is that I need to put a quotation mark at the end of each line to protect the last field. The usual regex... (1 Reply)
Discussion started by: thomas.hedden
1 Replies

4. 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 =~... (3 Replies)
Discussion started by: bigben1220
3 Replies

5. Shell Programming and Scripting

awk variables in regex expression ?

Hello, Could someone explain why this one returns nothing: $ x=/jon/ $ echo jon | awk -v xa=$x '$1~xa {print}' $ while the following works fine: $ x=jon $ echo jon | awk -v xa=$x '$1==xa {print}' $ jon and the following works fine: $ echo jon | awk '$1~/jon/ {print}' $ jon ... (3 Replies)
Discussion started by: vilius
3 Replies

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... (1 Reply)
Discussion started by: lawstudent
1 Replies

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 (1 Reply)
Discussion started by: kevin298
1 Replies

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... (8 Replies)
Discussion started by: kamlesh_pradhan
8 Replies

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... (7 Replies)
Discussion started by: dr46014
7 Replies

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@$i sed -i '/simple_allow_groups =/s/$/,... (4 Replies)
Discussion started by: yash_message
4 Replies
pwconv(1M)						  System Administration Commands						pwconv(1M)

NAME
pwconv - installs and updates /etc/shadow with information from /etc/passwd SYNOPSIS
pwconv DESCRIPTION
The pwconv command creates and updates /etc/shadow with information from /etc/passwd. pwconv relies on a special value of 'x' in the password field of /etc/passwd. This value of 'x' indicates that the password for the user is already in /etc/shadow and should not be modified. If the /etc/shadow file does not exist, this command will create /etc/shadow with information from /etc/passwd. The command populates /etc/shadow with the user's login name, password, and password aging information. If password aging information does not exist in /etc/passwd for a given user, none will be added to /etc/shadow. However, the last changed information will always be updated. If the /etc/shadow file does exist, the following tasks will be performed: Entries that are in the /etc/passwd file and not in the /etc/shadow file will be added to the /etc/shadow file. Entries that are in the /etc/shadow file and not in the /etc/passwd file will be removed from /etc/shadow. Password attributes (for example, password and aging information) that exist in an /etc/passwd entry will be moved to the correspond- ing entry in /etc/shadow. The pwconv command can only be used by the super-user. FILES
/etc/opasswd /etc/oshadow /etc/passwd /etc/shadow ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
passwd(1), passmgmt(1M), usermod(1M), passwd(4), attributes(5) DIAGNOSTICS
pwconv exits with one of the following values: 0 SUCCESS. 1 Permission denied. 2 Invalid command syntax. 3 Unexpected failure. Conversion not done. 4 Unexpected failure. Password file(s) missing. 5 Password file(s) busy. Try again later. 6 Bad entry in /etc/shadow file. SunOS 5.11 9 Mar 1993 pwconv(1M)
All times are GMT -4. The time now is 11:17 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy