solve, automate, speed up
Push to the Extreme with bash Scripting
Define array, calculate array length, take out values
Get script filename inside the bash script
Calculate is certificate good, pem file
if comparing float, linux shell, awk
Do not let run same script at the same time
Separate time schedule, calculate math, linux shell
Array in linux shell without creating file
Read line from file and put into variable, linux shell
Check if file exists, Linux