Debian 12 PATH and X11

May 18th, 2024 – 4:46 am
Tagged as: Computing Notes

A few quirks with Debain 12 include that path not being set in similar fashion to Fedora, Ubuntu, and other distributions.  One must regularly set export PATH=$PATH:/usr/sbin In Gnome, applications will open on the server instead of the client when using X11 forwarding.  This will occur even though xcalc opens on the client normally.  The [...]

Print environmental variables in Bash

April 2nd, 2024 – 11:06 pm
Tagged as: Computing Notes

Use printenv to see what environment variables are set. #!/usr/bin/env bash printenv set -x

The .bashrc file I use on CentOS6

April 2nd, 2024 – 11:00 pm
Tagged as: Computing Notes

The .bashrc file I use on CentOS6   # .bashrc # User specific aliases and functions alias rm=’rm -i’ alias cp=’cp -i’ alias mv=’mv -i’ # Source global definitions if [ -f /etc/bashrc ]; then . /etc/bashrc fi # system variables export VISUAL=nano # sets nano as the crontab editor export GZIP=-9 # maximum compression [...]

The best Alias for ls

March 2nd, 2024 – 11:14 pm
Tagged as: Computing Notes

The best alias for ls is ls –halF It is easy to remember, and produces easy to read output with human readable file sizes and / marks present by the directory names..

A good version of ll

February 20th, 2024 – 3:37 am
Tagged as: Computing Notes

A really good version of the ll alias is: ls –lahF, although on some versions ls –lahp looks better than F.

Double Sided Scan and PDF

February 1st, 2024 – 1:15 pm
Tagged as: Computing Notes

The following script scans PDFs via an auto-document feeder in Hp-Lip and then collates the pages to the correct order when there are reverse sides. No scans will be saved if no data is transmitted for the second set of scans. The second set of scans is the reverse of the pages. #!/usr/bin/env bash YMD=$(date [...]

Automated Database Restart

January 21st, 2024 – 7:41 pm
Tagged as: Computing Notes

Here is a script that checks to ensure the database is running and restarts the service if it is not running.  This was used on a very low memory server to ensure a database remained operational, despite it sometimes crashing due to out of memory errors. #!/bin/bash timestamp=”$(date)” systemctl stop httpd && echo “${timestamp}” Stopping [...]

Functions in Bash

January 21st, 2024 – 2:57 pm
Tagged as: Computing Notes

This is the code for a function in Bash script. #!/bin/bash # Define a function greet() { echo “Hello, $1″ } # Call the function with “World” as the argument greet “World”