529 = and == are for string comparisons -eq is for numeric comparisons -eq is in the same family as -lt, -le, -gt, -ge, and -ne == is specific to bash (not present in sh (Bourne shell), ...). Using …

Jul 25, 2017 · 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 …

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 …

Oct 4, 2008 · Related discusions: bash for loop: a range of numbers and unix.stackexchange.com - In bash, is it possible to use an integer variable in the loop control of a for loop?

Feb 10, 2010 · How do I compare a variable to a string (and do something if they match)?

Dec 15, 2011 · I'm reading " Bash Guide for Beginners ". It says: If the first character of PARAMETER is an exclamation point, Bash uses the value of the variable formed from the …

Aug 28, 2016 · Some differences on Bash 4.3.11: POSIX vs Bash extension: [ is POSIX [[ is a Bash extension inspired from Korn shell regular command vs magic [ is just a regular …

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 …

To combine stderr and stdout into the stdout stream, we append this to a command: 2>&1 For example, the following command shows the first few errors from compiling main.cpp: g++ …

This great tutorial by Baeldung shows 4 ways to process command-line arguments in bash, including: 1) positional parameters $1, $2, etc., 2) flags with getopts and ${OPTARG}, 3) …