What does "$$" means in shell script?
42711
What does $$ mean in the shell?
105247
what does $ mean here in JQuery
57007
What is the meaning of $? in a shell script?
100230
Reading a javascript script, why so many $ (dollar signs)?
100299
Using dollar sign in shell scripting
108681
What is the $? (dollar question mark) variable in shell scripting?
76281
What does $(command) & do?
69292
What is $ sign in Mathematica?
75274
Special variables in bash
35122
What's the meaning of a dot before a command in shell?
136641
Can someone explain the dollar sign in Javascript?
7431
How does ${!#} work in bash to get the last command-line argument?
106701
Bash: What does ">|" do?
158457
Using | pipe character from a $variable makes it treat as just another argument in bash; how to escape it?
54313
What is $() in a command?
45662
What is `$?` ? Is it a variable?
137445
Why is $ the default symbol for a user shell and # the default symbol for a root shell?