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Full Discussion: Cronjob
Top Forums UNIX for Beginners Questions & Answers Cronjob Post 303013925 by MadeInGermany on Friday 2nd of March 2018 04:53:57 AM
Old 03-02-2018
Set it to daily, and let the cron job skip every second time.
Example:
Code:
59 23 * * *  tf=/tmp/tf; if [ -d $tf ]; then rmdir $tf; /path/to/realcronjob; else mkdir $tf; fi

As root the protected /var/run/ is safer than /tmp/.
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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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