Bash command cheat sheet | Network World

$ for num in {1..3}; do
>   echo $num
> executed
1
2
3

Notice that it’s additionally doable to make use of brace growth a number of instances in the identical loop. Notice the usage of outer and inside braces. 

$ echo {{1..3},{7..11}}
1 2 3 7 8 9 10 11

Substring manipulation 

There are a number of methods to extract substrings in bash scripts. One of many best is to a bash command like this: 

$ goal="my cat Bella"
$ echo ${goal:7:6}
Bella

You need to use a command just like the echo command proven under to capitalize (exchange) the primary letter in a string. 

$ identify="joseph"
$ echo "${identify/j/J}"
Joseph

Bash instructions wrap-up 

This cheat sheet for scripting in bash offers command examples together with explanations of how these instructions work. Feedback and options are welcome.