What does $( ... ) mean in the shell?
71747
What's the difference between $(stuff) and `stuff`?
11651
What does curly brackets in the `var { ... } = ...` statements do?
121256
What is ./ in BASH
82566
Why should I use $[ EXPR ] instead of $(( EXPR ))?
91116
Difference between $ and ()
59672
What are the special dollar sign shell variables?
66357
What does the function declaration "sub function($$)" mean?
133569
What does the double slash mean in `${f// /_}`?
69292
What is $ sign in Mathematica?
95320
Why are square brackets preventing shell expansion?
26972
What are '$$' used for in PL/pgSQL
143637
What does ${ } mean in PHP syntax?
45816
What do $< and $@ represent in a Makefile?
55375
What is the $ symbol used for in JavaScript
34625
What is the difference between $* and $@?
12822
GNU find and masking the {} for some shells - which?
75605
What does ~$ stand for?