What does a single @ do?
782
What are the most common pitfalls awaiting new users?
87575
What does the “@@…@@” meta line with at signs in svn diff or git diff mean?
119816
What does  do?
131658
What is ?: in PHP 5.3?
45816
What do $< and $@ represent in a Makefile?
101895
What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
83225
Difference between single and double square brackets in Bash
38168
What is the Java ?: operator called and what does it do?
22403
What do \makeatletter and \makeatother do?
38677
Why do LaTeX internal commands have an @ in them?
81141
What does @"some string" mean in objective-c?
25478
What does ${1+"$@"} mean in a shell script, and how does it differ from "$@"?
34625
What is the difference between $* and $@?
76553
Does using @user in a question or answer send an inbox-notification to that user?
132590
What is the meaning of single and double underscore before an object name?
141380
Bash: Syntax Error on @()
51432
What does the "$#" special parameter mean in Bash?