Tag: utility

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Using apt-get

Update your cache:
apt-get update

Get a list of all packages available, make sure to
apt-cache pkgnames > readme.txt

Install the following:
sudo apt-get install apt-show-versions

This allows you to show all versions installed:
apt-show-versions | sort > readme.txt

A couple of switches are available too:
-u (print only upgradeable packages)

There are more switches available, use apt-show-versions --help for more information.

Completely remove a package
apt-get --purge remove

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Session Monitor timeoutd

Use this daemon to monitor logon usage and timeout the user.  For example:

# Format:  TIMES:TTYS:USERS:GROUPS:MAXIDLE:MAXSESS:MAXDAY:WARN
Al:*:joseph:*:*:30:*:5

30 minutes of session usage with 5 minutes of warning

This is started, you can monitor if it exists by

ps -A | grep -i timeoutd

The configuration file is:
/etc/timeouts

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Scanning for CR/LF, want valid bash script

Quick Conversion Command

find . -name "*" -type f -exec dos2unix {} \;

Sample Script

#!/bin/sh
# MAKE SURE TO ALWAYS SAVE THIS FILE AS UNIX FORMAT.</code>

# Date: Monday, November 17, 2008 8:30 AM
# Author: Maurice Ruckman
#
# Description: Scan scripts directory looking for CR/LF which indicates
# a script was not saved in UNIX format. This would cause the script
# to fail.

grep -l -r $'\r\n' /devl/scripts > scan_for_crlf.output.txt

if [ -s scan_for_crlf.output.txt ]; then
echo "FAILURE CR/LF DETECTED IN SCRIPTS FOLDER"
echo "Found CR/LF when scanning scripts folder" | mailx -s "FAILURE FAILURE FAILURE CR/LF DETECTED IN SCRIPTS FOLDER" mruckman@hollandamerica.com
else
echo "ALL OKAY"
echo "All scripts passed test scan." | mailx -s "Scripts Folder Passed Scan" mruckman@hollandamerica.com
fi
find "/home/jboss1/workspace/HAL" -type f -name "*.java" > list.txt

We can easily convert the code with dos2unix

and find the problem code with something like this:

grep -l -r $'\r\n' /home/jboss1/workspace/HAL

or just convert everything by scripting it, here's a start

find "/home/jboss1/workspace/HAL" -type f -name "*.java"