Category: Linux

Hello World! My first test in Raspberry Pi 3 B+

Hello World! My first test in Raspberry Pi 3 B+

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After Run Raspbian OS & Apps like the Free (for R Pi) Mathematica in Raspberry Pi 3 B+… connected in Display HDMI/Keyboard USB/Mouse USB … I proceeded further for Hello World! My first test in Raspberry Pi 3 B+ control of external electronics components and devices… in this Hello World! is basically some LEDs/Resistances connection to some selective Pins of the R Pi 40 pins… The project is run with the help of a Python script run from CLI/Shell Linux/Raspbian OS Shell…

More Coming Soon !!! with Photos

GUI Python3 vs GUI Shell Scripting

GUI Python 3 vs GUI (Linux) Shell Scripting

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As a PHP/JS Web Developer I study in my free time Linux topics online or in e-books… Also started study Python 3… As I mention Python 3 and Linux Shell Scripts provide some commands for creating GUIs windows[programs with GUI instead of the traditional CLI…  text mode programs]… In this post I focus on GUIs in Python 3 vs Shell Scripting GUIs…

Shell Scripting at first exist on Unix/Linux/MacOS OSs… (mainly Linux) but Python can installed in any OS including Windows 10….

In this article I use Linux Ubuntu Studio 18.10 for the demonstrations – I like using Ubuntu Studio rather Ubuntu or Fedora… because Ubuntu Studio come from Canonical too, and has preinstalled many free programs for Graphic Design, Video/Audio Edit, Photography, Publishing Ebooks, etc Tools… that’s I feel Not needed change OS to do these other essential Tasks for my work like edit an image etc… !!!

 

 

Coming Soon !!!

 

 

 

 

 

 

 

Linux Cron Backup Script – run once every month via cron

  Linux Cron Backup Script
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I set cron job with crontab -e for running 20:20 8th everyMonth any weekDay

Script appears below as backup-cron.sh,… feel free to COPY to your Linux VM for experimentation…

[root@server1 backup-cron]# crontab -l

20 20 8 * * /root/backup-cron.sh

[root@server1 backup-cron]# cd
[root@server1 ~]# cat backup-cron.sh
#!/usr/bin/bash

# script: /root/backup-cron.sh
# Author LEONIDAS SAVVIDES - LSEPOLIS123@GMAIL.COM
# script for backup auto with cron the Directory /etc/ to /root/backup-cron/etc-YYYY-MM-DD.tar.bz2 type
# of Archives once a month the 8th of each month 20:00

# Get Current date in format YYYY-MM-DD

DATE=`date +%Y-%m-%d`;

# directory to backup
BACKUP_THIS_DIR="/etc";

# save backups in the name /root/backup-cron/etc-DATE.tar.bz2

BACKUP_TO="/root/backup-cron/";

EXT=".tar.bz2";

BACKUP_FILE="etc-"$DATE$EXT; # not spaced

FULL_BACKUP_URI=$BACKUP_TO$BACKUP_FILE;  # not spaced

# Command to execute

tar jcvf $FULL_BACKUP_URI $BACKUP_THIS_DIR;  # all spaced with one space

# check if success or failure backup done
if [ $? -eq 0 ]; then
echo "Success"; mail -s "Success Backup on "$DATE root@localhost; exit 0;
else
echo "Failure"; mail -s "Failed Backup on "$DATE root@localhost; exit 1;
fi

# END OF THE SCRIPT

[root@server1 ~]#

any Question email me here : 

LSEPOLIS123@GMAIL.COM