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 …

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 …

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

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 …

When I use exit command in a shell script, the script will terminate the terminal (the prompt). Is there a way to terminate a script and then staying in the terminal? My script run.sh is expected to

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 …

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.

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 …

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? …

Apr 30, 2009 · Bash does provide a reliable means of determining if a number is an INTEGER. { VAR="asdfas" ; ( ( VAR )) ; echo $?; } The equation will correctly fail if the answer is '0' …