Unix iTOps Tube

Wednesday, May 2, 2012

How to specify Java System Properties in UNIX?

I am setting up Kerberos authentication and this is one of the steps:

1. Open the JBoss startup script.

2. Add the following Java System Properties



I added these 2 lines and it works in a Windows environment. But it doesnt work in AIX.

What is the format to specify Java system properties in AIX?

My current JBoss startup script is as follows:


USER_MEM_ARGS="-Xms256m -Xmx256m -XX:PermSize=64m -XX:MaxPermSize=256m -Xss256k



/u01/dctm/shared/jboss4.2.0/bin/run.sh -c DctmServer_MethodServer -b 0.0.0


Search and delete

A file(example viv.txt) contains a n number of rows like






If number "5" exist in the sixth position then it should delete the whole line.like this it should check for all rows in a file(viv.txt)


please help on this.

LSBrightSlider: Add Brightness Slider To iOS Lock Screen [Cydia]

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CloneSpy Helps You Free Disk Space By Identifying Duplicate Files Based On Name & Data

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Control Google Music Playback From Chrome Toolbar

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OpinionCloud Creates A Word Cloud To Summarize YouTube & Flickr Comments [Chrome, Firefox]

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Preview PDF Files In Windows Explorer Without Changing Default PDF Viewer

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grep only from a range of columns

Hello all,

I have a .csv file with over 100 columns. I would like to grep for a pattern only searching within a range of those fields, and print the entire line. For example: grep a pattern from columns $47-$87, but print fields $0 - $100


Understanding perl statement

can someone help me how to interpret this line?

my ($class, $hashref) = @_;

my $portfolio = {};

if ($hashref->{portfolio_id}) {
($portfolio) = GEmySQL->get ("select * from portfolio where portfolio.id=$hashref->{portfolio_id}");



Question: how do you read statement four? From left to right? or Right to left?

Recover/Reset Sun Java System Server Console password

I am administering a Solaris 10 server that I have root password for but need to get to the system server console. The password has been 'forgotten'.

I've tried changing it in /var/opt/mps/serverroot/admin-serv/config/admpw and local.conf with the current hashed password in /etc/shadow for a user there. This was unsuccessful.

I've also tried /usr/sbin/mpsadmconfig -ser <server:port> -u <having it read the admpw file for the current username and password > -setadminp <new password>

but I get an error message: Status = -1 Task -setadminpwd failed: null

Can someone suggest what I'm doing wrong or if there is a better/easier more effective way to do this? I need to copy over the LDAP files from this system to a new one being set up.

Thank you!

UPDATE: have found the plain text version of the password in /var/opt/mps/serverroot/admin-serv/config however, this password is not working as well.

Tcl script for seaching a string ignoring white spaces

Hi ,

I want to search a string in a file ignoring white spaces in TCL.

My string is as follows

Ouput-Maps " 1 1 1 0 " 1

i am doing following

set a [exec grep [ {"Output-Maps[]*1[]*1[]*1[]*0[]* " }1 abc.log}]

but it is not working.

What is the wrong with the tcl script



set a [

how to use if condition with sed command in BASH

Urgent help with bash scripting

1- i am using grep to find a string called: tinker panic 0 in a file /etc/ntp.conf

if the string is not there, i want to add the strings in /etc/ntp.conf file in the first line of the file. if not do nothing or exit.

2- also i want to add # in front of the following lines in /etc/ntp.conf only if # is not there.


#server # local clock#fudge stratum 10

Here what i have so far, but not working properly:


#!/bin/bash#const='tinker panic 0';if [ -e /etc/ntp.conf ] ; thenfound = 'grep "$const" /etc/ntp.conf' >/dev/null 2>&1 if [ "$found" -eq 0 ] ; then echo "not found" ; sed -i.bak '1 i\tinker panic 0' /etc/ntp.conf fifi

Thank you in advance.

Weird Error moving a file


We are running into very weird error on AIX. Target directory exists on NFS.

We have one script runs every 5 mins on our system. This script is running for 5 years for now without any issuess.

Followig is the snapshot of the script :


  stmt_cnt=$(ls -1 ${1}/${2}|wc -l)

  if [ ${stmt_cnt} -ne 0 -a ${stmt_cnt} -lt 501 ]; then

    out_str="${out_str}\n$(date +"%Y%m%d%H%M%S"): Moving ${stmt_cnt} \"${2}\" statements from ${1} to ${3}\n"

    find ${1} -name "${2}" | sort -t"_" +7n +8n | xargs ksh -c 'mv $* '"${3}" foobar

Recently, mv command started failing only few occasions. Intrestingly, it is successful in the second run after failing in first run.

Following is the Error.


Usage: mv [-I] [ -d| -e] [-i | -f] [-E{force|ignore|warn}] [--] src target

  or: mv [-I] [-i | -f] [-E{force|ignore|warn}] [--] src1 ... srcN directory

Any guesses ? Appreciate pointers.

What is wrong with the the tcl script

Hi All,

I am searching for two string in the .log file

The strings are

Active Flop-Maps "0 0 1 0 1" 1


Ouput-Maps " 0 0 1 1 0" 2

It should search in the file ignoring white spaces .Tell me what is wrong with this script.

The tcl script is as follows

proc proc2 {arglist} {

set header {}

set i 0;

foreach a $arglist {

if {[string compare {" "} $a]} {

append header "\[\]\*" $a



set trimmed [string trimleft $header '\[\]\']

set trimmed1 [string trimleft $trimmed *]

return $trimmed1

set matches [exec grep{trimmed1} abc.log]

puts $matches


proc2 "Active Flop-Maps 0 0 1 0 1 0" 1

proc2 "Ouput-Maps 0 0 1 1 0" 2

Thanks in advance.


---------- Post updated at 01:40 PM ---------- Previous update was at 01:38 PM ----------

If i will change the Active Flop-Maps 0 0 1 0 1 0" 1 to Active Flop-Maps 0 1 1 1 1 0" 1 it shouldn't match

Backup file

Im a fairly new linux user and im trying to learn how to do a backup shell script. i have this so far,


#! /bin/bash



day=$(date +%A)

hostname=$(hostname -s)


tar czf $dest/$archive_file $backup_files

echo "finished"

and im getting 2 errors:


line 8 expected eof while looking for matching `"'

line 9:syntax error: unexpected end of file

any help would be greatly appreciated

Unix Solaris server breached

what approach can be taken on how you can investigate a reported breach and confirm whether the breach occurred or not. As of now it cannot be confirmed if the breach occured but its been reported that some key system files have been deleted.