cron - process scheduling daemon

Property Value
Distribution Debian 10 (Buster)
Repository Debian Main i386
Package filename cron_3.0pl1-134_i386.deb
Package name cron
Package version 3.0pl1
Package release 134
Package architecture i386
Package type deb
Category admin admin::automation implemented-in::c interface::daemon role::program scope::utility
License -
Maintainer Javier Fernández-Sanguino Peña <>
Download size 98.16 KB
Installed size 265.00 KB
The cron daemon is a background process that runs particular programs at
particular times (for example, every minute, day, week, or month), as
specified in a crontab. By default, users may also create crontabs of
their own so that processes are run on their behalf.
Output from the commands is usually mailed to the system administrator
(or to the user in question); you should probably install a mail system
as well so that you can receive these messages.
This cron package does not provide any system maintenance tasks. Basic
periodic maintenance tasks are provided by other packages, such
as checksecurity.


Package Version Architecture Repository
cron_3.0pl1-134_amd64.deb 3.0pl1 amd64 Debian Main
cron - - -


Name Value
adduser -
debianutils >= 1.7
init-system-helpers >= 1.54~
libc6 >= 2.28
libpam-runtime >= 1.0.1-11
libpam0g >=
libselinux1 >= 1.32
lsb-base >= 3.0-10
sensible-utils -


Name Value
cron-daemon -


Type URL
Binary Package cron_3.0pl1-134_i386.deb
Source Package cron

Install Howto

  1. Update the package index:
    # sudo apt-get update
  2. Install cron deb package:
    # sudo apt-get install cron




2019-06-23 - Christian Kastner <>
cron (3.0pl1-134) unstable; urgency=medium
* Increase maximum crontab length to 10,000 lines.
The previous limit proved to be too low for users with edge cases.
(Closes: #925276)
* Add NEWS entry for crontab line limit increase.
2019-03-10 - Christian Kastner <>
cron (3.0pl1-133) unstable; urgency=medium
* SECURITY: Fix bypass of /etc/cron.{allow,deny} on failure to open
If these files exist, then they must be readable by the user executing
crontab(1). Users will now be denied by default if they aren't.
(LP: #1813833)
* SECURITY: Fix for possible DoS by use-after-free
A user reported a use-after-free condition in the cron daemon, leading to a
possible Denial-of-Service scenario by crashing the daemon.
(Closes: #809167)
* SECURITY: DoS: Fix unchecked return of calloc()
Florian Weimer discovered that a missing check for the return value of
calloc() could crash the daemon, which could be triggered by a very
large crontab created by a user.
* Enforce maximum crontab line count of 1000 to prevent a malicious user
from creating an excessivly large crontab. The daemon will log a warning
for existing files, and crontab(1) will refuse to create new ones.
* Add d/NEWS altering to the new 1000 lines limit.
* Move /var/run/crond.reboot to /run/crond.reboot.
* crontab.5: Reverse the info on tilde expansion. When setting PATH, most
shells will not expand a tilde. Thanks, Tim Landscheidt, for the analysis.
(Closes: #801328)
* Fixes for numerous man page issues. Remove trailing whitespace, use proper
escapes, etc. Thanks, Bjarni Ingi Gislason! (Closes: #893575, #893579)
* crontab.1: Drop duplicate DIAGNOSTICS header.
* daemon: Only support the 'x' debug option in debug builds.
2019-02-24 - Christian Kastner <>
cron (3.0pl1-132) unstable; urgency=medium
[ Christian Kastner ]
* postinst: Properly test for regular file
cron.postinst checked for a regular file by parsing the stat output,
instead of simply relying on test(1)
* Mark package cron as Multi-Arch: foreign (Closes: #878363)
[ Stéphane Blondon ]
* Add forgotten '\n' to a line in the crontab header (Closes: #898119)

See Also

Package Description
cronic_3-2_all.deb Bash script for wrapping cron jobs to prevent excess email sending
cronolog_1.6.2+rpk-2_i386.deb Logfile rotator for web servers
cronometer_0.9.9+dfsg-3_all.deb CRON-o-Meter - Exercise and nutrient intake tracker
cronutils_1.9-1_i386.deb Utilities to assist running batch processing jobs
cross-config_2.6.15-3_all.deb autotools support for cross-compilation
cross-gcc-dev_230_all.deb Tools for building cross-compilers and cross-compiler packages
crossbuild-essential-amd64_12.6_all.deb Informational list of cross-build-essential packages
crossbuild-essential-arm64_12.6_all.deb Informational list of cross-build-essential packages
crossbuild-essential-armel_12.6_all.deb Informational list of cross-build-essential packages
crossbuild-essential-armhf_12.6_all.deb Informational list of cross-build-essential packages
crossbuild-essential-i386_12.6_all.deb Informational list of cross-build-essential packages
crossbuild-essential-mips64el_12.6_all.deb Informational list of cross-build-essential packages
crossbuild-essential-mips_12.6_all.deb Informational list of cross-build-essential packages
crossbuild-essential-mipsel_12.6_all.deb Informational list of cross-build-essential packages
crossbuild-essential-powerpc_12.6_all.deb Informational list of cross-build-essential packages