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- 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
- 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:
- Whats the difference between [ and [[ in Bash? - Stack Overflow
Make sure you have the #! bin bash shebang line for your script if you use double brackets See also Bash FAQ - "What is the difference between test, [ and [ [ ?" Bash Practices - Bash Tests Server Fault - What is the difference between double and single brackets in bash?
- How to compare strings in Bash - Stack Overflow
How do I compare a variable to a string (and do something if they match)?
- shell - Difference between sh and Bash - Stack Overflow
When writing shell programs, we often use bin sh and bin bash I usually use bash, but I don't know what's the difference between them What's the main difference between Bash and sh? What do we
- 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 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
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