Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Tips and Traps¶

1. Module is a good alternative to singletons in Python.

String¶

Regular Expression Comparison¶

https://stackoverflow.com/questions/229551/how-to-check-if-a-string-contains-a-substring-in-bash

Bash Programming¶

1. case ... esac is different from switch(){} in C/C++. You do not have to return/exit manually after each branch.

not condition

if [ ! -d "$1" ]; then
fi

Shell Programing Trick¶

1. Generate 00, 01, ..., to 25.

    for i in {00..25}; do echo $i; done
   

   or

    seq -f %02g 0 25

Shell Scripting¶

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Comments¶

1. You must assign a value to each enum member.