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Full Discussion: Array problem in Bash Script
Top Forums UNIX for Beginners Questions & Answers Array problem in Bash Script Post 302983763 by cogiz on Sunday 16th of October 2016 05:43:46 PM
Old 10-16-2016
Linux Array problem in Bash Script
I am trying to write a Bash Script using a couple of arrays. I need to perform a countdown of sorts on an array done once daily, but each day would start with the numbers from the previous day. This is what I'm starting with :

Code:
#!/bin/bash

days=(9 8 7 6 5)

for (( i = 0 ; i < ${#days[@]} ; i++ ))
  do (( days[$i]=${days[$i]} - 1 )) 
  done

This leaves me with this :
Code:
$ 8 7 6 5 4

How do I start with days=(8 7 6 5 4) the next time the script is run instead of days=(9 8 7 6 5)?

I am using Linux Mint 18 (Cinnamon) and the latest version of Bash

Thank You in advance for any and all suggestions.
Cogiz
Last edited by Scrutinizer; 10-16-2016 at 11:15 PM.. Reason: code tags
 

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LEARN ABOUT DEBIAN

lchage

lchage(8)						      System Manager's Manual							 lchage(8)

NAME

       lchage - Display or change user password policy

SYNOPSIS

       lchage [OPTION]... user

DESCRIPTION

       Displays or allows changing password policy of user.

OPTIONS

       -d, --date=days
	      Set the date of last password change to days after Jan 1 1970.

       -E, --expire=days
	      Set the account expiration date to days after Jan 1 1970.  Set days to -1 to disable account expiration.

       -i, --interactive
	      Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration.

       -I, --inactive=days
	      Disable the account after days after password expires (after the user user is required to change the password).

       -l, --list
	      Only list current user's policy and make no changes.

       -m, --mindays=days
	      Require at least days days between password changes.  Set days to 0 to disable this checking.

       -M, --maxdays=days
	      Require changing the password after days since last password change.  Set days to 99999 to disable this checking.

       -W, --warndays=days
	      Start warning the user days before password expires (before the user is required to change the password).

EXIT STATUS

       The exit status is 0 on success, nonzero on error.

libuser 							    Jan 12 2005 							 lchage(8)
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