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Full Discussion: Help Running a Check in Bash Script
Top Forums UNIX for Dummies Questions & Answers Help Running a Check in Bash Script Post 302510428 by Duo11 on Sunday 3rd of April 2011 11:51:12 PM
Old 04-04-2011
Question Help Running a Check in Bash Script
Hey guys, so I wrote a small script that pretty much just takes in two numbers and counts from the first to the second, e.g.
Code:
unknown-hacker|544> count.sh 1 3
1
2
3

My problem is I want to make it so that if you input invalid parameters, such as non-numerical characters, more than 2 numbers, etc., you'd get an error message. Any suggestions? Thanks in advance.

Edit: Here's what my script looks like so far:
Code:
#!/bin/bash

declare -i INDEX
declare -i RESULTS
if [ $1 -gt $2 ]; then
    INDEX=$1
    while [[ $INDEX -gt $2 ]] || [[ $INDEX -eq $2 ]]; do
        echo $INDEX
        INDEX=$INDEX-1
    done
elif [ $1 -le $2 ]; then
    INDEX=$1
    while [[ $INDEX -le $2 ]] || [[ $INDEX -eq $2 ]]; do
        echo $INDEX
        INDEX=$INDEX+1
    done
else
    echo $1

Last edited by Scott; 04-04-2011 at 02:37 AM.. Reason: Code tags, please...
 

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LEARN ABOUT DEBIAN

dlamrg.f

dlamrg.f(3)							      LAPACK							       dlamrg.f(3)

NAME

       dlamrg.f -

SYNOPSIS

   Functions/Subroutines
       subroutine dlamrg (N1, N2, A, DTRD1, DTRD2, INDEX)
	   DLAMRG

Function/Subroutine Documentation
   subroutine dlamrg (integerN1, integerN2, double precision, dimension( * )A, integerDTRD1, integerDTRD2, integer, dimension( * )INDEX)
       DLAMRG

       Purpose:

	    DLAMRG will create a permutation list which will merge the elements
	    of A (which is composed of two independently sorted sets) into a
	    single set which is sorted in ascending order.

       Parameters:
	   N1

		     N1 is INTEGER

	   N2

		     N2 is INTEGER
		    These arguements contain the respective lengths of the two
		    sorted lists to be merged.

	   A

		     A is DOUBLE PRECISION array, dimension (N1+N2)
		    The first N1 elements of A contain a list of numbers which
		    are sorted in either ascending or descending order.  Likewise
		    for the final N2 elements.

	   DTRD1

		     DTRD1 is INTEGER

	   DTRD2

		     DTRD2 is INTEGER
		    These are the strides to be taken through the array A.
		    Allowable strides are 1 and -1.  They indicate whether a
		    subset of A is sorted in ascending (DTRDx = 1) or descending
		    (DTRDx = -1) order.

	   INDEX

		     INDEX is INTEGER array, dimension (N1+N2)
		    On exit this array will contain a permutation such that
		    if B( I ) = A( INDEX( I ) ) for I=1,N1+N2, then B will be
		    sorted in ascending order.

       Author:
	   Univ. of Tennessee

	   Univ. of California Berkeley

	   Univ. of Colorado Denver

	   NAG Ltd.

       Date:
	   November 2011

       Definition at line 100 of file dlamrg.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

Version 3.4.1							  Sun May 26 2013						       dlamrg.f(3)
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