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- bash - Shell equality operators (=, ==, -eq) - Stack Overflow
If not quoted, it is a pattern match! (From the Bash man page: "Any part of the pattern may be quoted to force it to be matched as a string ") Here in Bash, the two statements yielding "yes" are pattern matching, other three are string equality:
- What does $# mean in bash? - Ask Ubuntu
Furthermore, when you use bash -c, behavior is different than if you run an executable shell script, because in the latter case the argument with index 0 is the shell command used to invoke it
- Whats the difference between lt; lt;, lt; lt; lt; and lt; lt; in bash?
What's the difference between <<, <<< and < < in bash?Here document << is known as here-document structure You let the program know what will be the ending text, and whenever that delimiter is seen, the program will read all the stuff you've given to the program as input and perform a task upon it Here's what I mean: $ wc << EOF > one two three > four five > EOF 2 5 24 In this example we
- An and operator for an if statement in Bash - Stack Overflow
Modern shells such as Bash and Zsh have inherited this construct from Ksh, but it is not part of the POSIX specification If you're in an environment where you have to be strictly POSIX compliant, stay away from it; otherwise, it's basically down to personal preference
- What do the -n and -a options do in a bash if statement?
The switches -a and -n are not strictly part of a bash if statement in that the if command does not process these switches What are primaries? I call them "switches", but the bash documentation that you linked to refers to the same thing as "primaries" (probably because this is a common term used when discussing parts of a boolean expression)
- How to compare strings in Bash - Stack Overflow
How do I compare a variable to a string (and do something if they match)?
- syntax - Ternary operator (?:) in Bash - Stack Overflow
@dutCh's answer shows that bash does have something similar to the "ternary operator" however in bash this is called the "conditional operator" expr?expr:expr (see man bash goto section "Arithmetic Evaluation") Keep in mind the bash "conditional operator" is tricky and has some gotchas
- What is bash command in bash? - Ask Ubuntu
I just typed bash in Ubuntu's terminal and, it was like normal But after that, I had to type exit twice What is bash command in bash?
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