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- bash - What is the purpose of in a shell command? - Stack Overflow
Furthermore, you also have || which is the logical or, and also ; which is just a separator which doesn't care what happend to the command before
- 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:
- 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)?
- 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
- 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
- Bash Script : what does #! bin bash mean? - Stack Overflow
In bash script, what does #! bin bash at the 1st line mean ? In Linux system, we have shell which interprets our UNIX commands Now there are a number of shell in Unix system Among them, there is a shell called bash which is very very common Linux and it has a long history This is a by default shell in Linux When you write a script (collection of unix commands and so on) you have a option
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