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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:
- arguments - What is $@ in Bash? - Stack Overflow
I reckon that the handle $@ in a shell script is an array of all arguments given to the script Is this true? I ask because I normally use search engines to gather information, but I can't google f
- 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
- How to compare strings in Bash - Stack Overflow
Bash always seemed backward with numeric evaluations using an operator consisting of a string (-eq) and string comparisons using a numeric operator "==" or "=" just you mess you up If you ask me I'd say the problem is the distro swapping out bash That is just my opinion, but this is my fix
- 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)
- bash - How do I use a regex in a shell script? - Stack Overflow
Using Bash's own regex-matching operator, =~, is a faster alternative in this case, given that you're only matching a single value already stored in a variable:
- bash if -a vs -e option - Stack Overflow
Use -e For single ' [', the bash builtin behaves the same as the test bash builtin, which behaves the same as usr bin [ and usr bin test (the one is a symlink to the other) Note the effect of -a depends on its position: If it's at the start, it means file exists If it's in the middle of two expressions, it means logical and
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