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AX_PROG_CRONTAB
Check for the program crontab, if exists let script continue, else pops an error message
Besides checking existence, this macro also set these environment variables upon completion:
CRONTAB = which crontab
Download the latest version of ax_prog_crontab.m4 or browse the macro’s revision history.
Copyright © 2008 Gleen Salmon gleensalmon@yahoo.com
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