/etc/default/cron is in cron 3.0pl1-120ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | # Cron configuration options
# Whether to read the system's default environment files (if present)
# If set to "yes", cron will set a proper mail charset from the
# locale information. If set to something other than 'yes', the default
# charset 'C' (canonical name: ANSI_X3.4-1968) will be used.
#
# This has no effect on tasks running under cron; their environment can
# only be changed via PAM or from within the crontab; see crontab(5).
READ_ENV="yes"
# Extra options for cron, see cron(8)
#
# For example, to enable LSB name support in /etc/cron.d/, use
# EXTRA_OPTS='-l'
#
# Or, to log standard messages, plus jobs with exit status != 0:
# EXTRA_OPTS='-L 5'
#
# For quick reference, the currently available log levels are:
# 0 no logging (errors are logged irregardless)
# 1 log start of jobs
# 2 log end of jobs
# 4 log jobs with exit status != 0
# 8 log the process identifier of child process (in all logs)
#
#EXTRA_OPTS=""
# Uncomment to disable lost+found check
#CHECK_LOSTFOUND=no
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