
bash - Shell equality operators (=, ==, -eq) - Stack Overflow
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 …
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 …
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 …
How do I iterate over a range of numbers defined by variables in …
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?
How to compare strings in Bash - Stack Overflow
Feb 10, 2010 · How do I compare a variable to a string (and do something if they match)?
What does 'set -e' mean in a Bash script? - Stack Overflow
By default, Bash does not do this. This default behavior is exactly what you want if you are using Bash on the command line you don't want a typo to log you out! But in a script, you really want …
Is bash a programming language? - Stack Overflow
Feb 24, 2015 · According to man bash, Bash is a "sh-compatible command language". Then, we can say a "command language" is "a programming language through which a user …
linux - Is there a way to exit a Bash script, but not quitting the ...
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
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.
bash - How to escape single quotes within single quoted strings
Aug 9, 2009 · Instead, try printf, or perhaps regular echo with Bash's $'c-style' strings which support basically the same escapes (so \047 encodes an escaped literal single quote).