Why are some place holders '@' and others '%'?
111925
What's the difference between !, %, and @ in replacement tokens?
114539
${1:+"$@"} in /bin/sh
120214
What's the difference between <<, <<< and < < in bash?
84622
How can I get identifier style to apply to '%' (in a Perl listing)?
83409
Difference between $ and # in Linux environment
56914
Does %* in batch file mean all command line arguments?
977
What is the difference between [@] and [*] when referencing bash array values?
56824
What is the difference between <%# and <%= in ASP.NET MVC?
34007
What does % do to strings in Python?
137096
What is the purpose of the '@' symbol in CSS?
152734
Using the literal '@' with a string variable
119575
How are parentheses interpreted at the command line?
100424
Technicalities about "%"?
96838
Is the behaviour of .* to include . and .. defined in LSB or POSIX or some other specification?
104696
Where are the necessary places to be appended with % to remove unwanted spaces?
117667
What does %>% mean in R
71051
_ (underscore) is a reserved keyword