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پاي سيب
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Cellular automaton
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اميرحسين
Some Real Work
show_uptime
drive_space
home_space
system_info
Flow Control - Part 1
if
What is a "condition"?
Exit status
test
exit
Testing for root
Stay Out of Trouble
Empty variables
Missing quotes
Isolating problems
Watching your run
Keyboard Input and Arithmetic
read
Arithmetic
Flow Control - Part 2
More branching
Loops
Building a menu
Positional Parameters
Detecting command line arguments
Command line options
Getting an option"s argument
Integrating the command line processor into the
Adding interactive mode
Flow Control - Part 3
Errors and Signals and Traps (Oh My!) - Part 1
Exit status
Checking the exit status
An error exit function
AND and OR lists
Improving the error exit function
Errors and Signals and Traps (Oh My!) - Part 2
Cleaning up after yourself
trap
Signal 9 From Outer Space
A clean_up function
Creating safe temporary files
