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  1. 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 …

  2. arguments - What is $@ in Bash? - Stack Overflow

    Oct 10, 2010 · 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 …

  3. 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 ...

  4. How to compare strings in Bash - Stack Overflow

    Feb 10, 2010 · 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 …

  5. 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 …

  6. sh - [: missing `]' in bash script - Stack Overflow

    Feb 9, 2016 · A bash function has no line numbers related to the FILE that contains the definition. NOW: The code is stored somewhere internally in the running instance of Bash - does it REALLY require a …

  7. bash - How do I use a regex in a shell script? - Stack Overflow

    Mar 10, 2016 · 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:

  8. How to increment a variable in bash? - Ask Ubuntu

    Jan 30, 2017 · #!/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.

  9. bash - What is the purpose of .bashrc and how does it work? - Unix ...

    I found the .bashrc file and I want to know the purpose/function of it. Also how and when is it used?

  10. 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 …