06112022.md

1. set command changes/resets the output value of internal command/scripts

• One use for this is to toggle option flags which help determine the behavior of the script.
• Sets the positional parameters to the output of the command (eg: uname -a)

$ uname -a
MINGW64_NT-10.0-18362 cuongtrinh 3.1.7-340.x86_64 2000-10-12 16:29 UTC x86_64 Msys

• After doing:

set $(uname -a)

• The outputs now returns to: a list of positional parameters (So cool!!!)

$ echo $_
Msys
$ echo $-
himBHs
$ echo $1
MINGW64_NT-10.0-18362
$ echo $2
cuongtrinh
...