BASH check if argv is a number between 0 and 100
35434
Check if $REPLY is in a range of numbers
39947
Checking if a string contains an integer
142549
Floating point comparison with variable in bash
86070
check if numbers from command line are powers of 2
117455
Regex for number check below a value
32971
Is it possible to get a decimal output from doing division in Bash?
75034
Syntax error checking whether account number is numeric
69001
"Command not found" when attempting integer equality in bash
43775
Checking the success of a command in a bash `if [ .. ]` statement
59343
Check whether an input string contains a number in javascript
54230
CSH - How to check if input is NOT number
57604
Set variable conditionally on command line
41578
How to iterate over arguments in a Bash script
9013
how to loop through arguments in a bash script
11079
Comparing two strings in Bash
105531
Determining if a variable is within range?
67636
How to check the extension of a filename in a bash script?