what is the significance of the "7" in "man 7 regex"?
14411
What do the numbers in a man page mean?
51989
Unfamiliar characters used in JavaScript encryption script
41471
What is the meaning of lines starting with a hash sign and number like '# 1 "a.c"' in the gcc preprocessor output?
20343
What does {0} mean when found in a string in C#?
120786
Regex Named Groups in Java
29625
What does the notation like 8.6e-28 mean? What is the 'e' for?
87375
Difference between [0-9], [[:digit:]] and \d
111925
What's the difference between !, %, and @ in replacement tokens?
85864
What is wrong with my date regex?
322
clear meaning of .* in regex
11884
Purpose of a ".f" appended to a number?
42398
What is the difference between \number and \the?
133804
What does $%,.2f represent?
64104
What does `[ EXPRESSION ], [ ] and [OPTION` mean in `man test`?
92760
What is the mathematical symbol/representation for the remainder operation?
112023
What is this '°͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌͌' strange character?
142860
Why is this regex allowing a caret?