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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)
What does set -e mean in a Bash script? - Stack Overflow 74 As per bash - The Set Builtin manual, if -e errexit is set, the shell exits immediately if a pipeline consisting of a single simple command, a list or a compound command returns a non-zero status
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?
How to increment a variable in bash? - Ask Ubuntu #! bin bash # To focus exclusively on the performance of each type of increment # statement, we should exclude bash performing while loops from the # performance measure