Bash Scripting Python Scripting administration tutorials

ally_uk

Guys are there any good tutorials out there which walk you through bash scripting / python 3 for useful system administration stuff like backup scripts.

ally_uk

I found a pretty kool archive script

#!/bin/bash
#
#
# Daily_Archive - Archive Designated files and directories
#############################################################
#
# Gather The Current Date
#
DATE=$(date +%y%m%d)
#
# Set Archive File Name
#
FILE=archive$DATE.tar.gz
#
# Set Configuration and Destination File
#
CONFIG_FILE=/archive/files_to_backup
DESTINATION=/archive/$FILE
#
##################### Main Script ##########################
#
# Check Backup Config File Exists
#
if [ -f $CONFIG_FILE ] # make sure config file exists
then # if it exists do nothing and continue on!
echo
else
echo
echo "$CONFIG_FILE does not exist."
echo "backup not completed due to missing configuration file"
echo
exit
fi
#
# Build the names of the files to backup
#
FILE_NO=1 # start on line 1 on the config file
#
exec < $CONFIG_FILE #Redirect std Input to name of config file
#
read FILE_NAME # read 1st record
#
while [ $? -eq 0 ] # create list of files to backup
do
if [ -f $FILE_NAME -O -d $FILE_NAME ] #check the file exists
then
# if file exists add its name to list.
FILE_LIST="$FILE_LIST $FILE_NAME"
else
# If files doesn't exist, issue warning
echo
echo $FILE_NAME, does not exist."
echo "Obviously I will not include it in this archiuve."
echo "It is listed on line $FILE_NO of the config file."
echo "Continuing to build archive list."
echo
fi
#
FILE_NO=$($File_NO +1] # Increase Line/File by one.
Read FILE_NAME # read next record
done
#
#######################################################################
#
# Backup the files and compress the archive
#
echo "Starting Archive..."
echo
#
tar -czf $DESTINATION $FILE_LIST 2> /dev/null
#
echo "Archive completed"
echo "Resulting archive file is: $DESTINATION"
echo
#
exit

Verities

Linux Academy has by far the best course on BASH scripting I've come across:

The System Administrator’s Guide to Bash Scripting

It consists of about 7 hours of practical BASH scripting that can be modified for whatever you want done (i.e. reading files to create a list of users). Work on learning BASH first then move on to Python, which I believe they're currently creating a new course for.

UnixGuy

Find a task at work that you do repeatedly. Find a way to automate it. Google and see how other people automated it. Test, lab, learn, code.

You don't need tutorials

chrisone

UnixGuy wrote: »

You don't need tutorials

Isn't this a tutorial?

UnixGuy wrote: »

Google and see how other people automated it.

UnixGuy

chrisone wrote: »

Isn't this a tutorial?

Kinda, but I meant he doesn't need a step-by-step how-to guide on how to automate things. Pick one task at a time

UnixGuy

PS: OP @ally_uk we answered your question 2 years ago...

http://www.techexams.net/forums/off-topic/106584-bash-scripting-101-a.html

Verities

UnixGuy wrote: »

PS: OP @ally_uk we answered your question 2 years ago...

http://www.techexams.net/forums/off-topic/106584-bash-scripting-101-a.html

*sigh*....

http://www.techexams.net/forums/lpi-rhce-sair/113314-lets-talk-about-scripting-learning.html

Its like no one uses the search function anymore. The same questions that have already been answered get asked over and over and over and over....

Kinet1c

Verities wrote: »

Linux Academy has by far the best course on BASH scripting I've come across:

The System Administrator’s Guide to Bash Scripting

It consists of about 7 hours of practical BASH scripting that can be modified for whatever you want done (i.e. reading files to create a list of users). Work on learning BASH first then move on to Python, which I believe they're currently creating a new course for.

Working my way through the LA course now, would recommend it to anyone looking to start or enhance their bash scripting.

ally_uk

I know dudes 2 years I can barely output echo hello world I have the intention to learn but I want some interesting sysadmin stuff to get me interested otherwise I get bored of doing math, loops

Verities

Kinet1c wrote: »

Working my way through the LA course now, would recommend it to anyone looking to start or enhance their bash scripting.

Yep, I went through the entire course and can now create extremely useful scripts (like nested functions that contain ansible commands, running reports on dead UIDs then removing them from systems, etc). You come out of the course with 20+ scripts that you can use in your daily sys admin duties. That course also satisfies the requirements of bash scripting for the RHCE.

Kinet1c

Some books which will be of use along the way: https://www.humblebundle.com/books/unix-book-bundle

Kai123

Kinet1c wrote: »

Some books which will be of use along the way: https://www.humblebundle.com/books/unix-book-bundle

I bought the TCP/IP and DNS/BIND books from Amazon a week ago (second hand but still €25 in total).

How do you personally find studying from e-books? I might get a decent kindle since that bundle is a lot of material to go through.

Kinet1c

I'm all about the physical books for studying tbh ... but this was too good a deal to pass up. I've got a kindle so going to try it out but would not use a tablet due to the type of screen.