Intro to BASH scripting with a little AWK
The following commands/programs will be used/discussed this week:
bourne
bash
korn
cshell
perl
python
./
chmod a+x
' (backquote)
echo
awk -F '{print $1}'
Scripting Concepts
variables
getting input
directing output
Using Other programs
List of Operators
Control statements (if elif else fi)
Control statements (case $1 in.....esac)
Repetition Statements (while() and for() )
Functions (for modular program design
Using Command Line Arguments ($0-$10)
Example Script
#!/bin/bash
#Note, that first line often must be changed to fit your system
file=~/diary
date >> $file
echo "Hello `whoami`, what did you do today?"
read today
echo "$today" >> $file
echo >> $file
echo "-----------------------------------------------" >> $file
echo >> $file
Example Script 2
#!/bin/bash
set -o xtrace
echo "Do you believe the world is a sphere in shape?"
echo "Please answer y or n"
read answer
if [ $answer = y -o $answer = Y ]; then
echo "Congrats, you live in the modern world"
elif [ $answer = n -o $answer = N ]; then
echo "Get your head out of the sand you silly luddite"
else
echo "What part of "Please answer y or n" don't you understand?";
fi
|
