Determines whether a parameter is an integer in shell.

Determines whether the parameter is an integer.
#! /Bin/bash </P> <p> function inttest () <br/> {<br/> for Arg <br/> DO <br/> # Arithmetic Operators, when the parameter is an integer, the execution fails. <br/> ($ Arg) 2>/dev/null # blocking error information <br/> If [$? = 0] <br/> then <br/> echo "$ Arg" is an integer <br/> else <br/> echo "$ Arg" is not an integer <br /> fi <br/> done <br/>}< br/> inttest-100 1234 22222222222222222 0765 0x10a + 100/<br/> 0 xaadg ASSD 1.00 200.0 2A70 0.00

Execution result:
-100 is an integer
1234 is an integer
22222222222222222 is an integer
0765 is an integer
0x10a is an integer
+ 100 is an integer
0 xaadg is not an integer
ASSD is not an integer
1.00 is not an integer
200.0 is not an integer
2A70 is not an integer
0.00 is not an integer