what is the meaning of the following shell option - shopt -s nullglob extglob
2600
How do you get descriptions of the available `shopt` options?
13882
What does 2>/dev/null mean?
71795
What does the Bash operator <<< (i.e. triple less than sign) mean?
34304
Precedence of the shell logical operators &&, ||
36359
What does $# mean in shell?
130292
Which special variables are available when writing a shell command for a context menu
108681
What is the $? (dollar question mark) variable in shell scripting?
107557
Shell usage of ":-" and advantage
96579
How to know if extglob is enabled in the current bash session?
38194
Usage of enclosing braces {} as arguments to commands and their options
128374
what is $$ in bash?
117107
What is the difference between '.' and 'source' in shells?
42602
Can running `yes > /dev/null` harm a Mac?
13826
In Bash scripting, what's the meaning of " $! "?
91653
Why does `at` warn me that commands will be executed using /bin/sh? What if I want a different shell?
3585
What exactly happens when a built-in command is run in a shell?
25478
What does ${1+"$@"} mean in a shell script, and how does it differ from "$@"?