example.env

# Set path to borg command. Default is "/usr/local/bin/borg".
export CMD_BORG=/usr/local/bin/borg

# Use an external command to obtain the passphrase
#export BORG_PASSCOMMAND='cat /etc/backup/passphrase'

# set borg's passphrase for encryption support, but you should use PASSCOMMAND instead
#export BORG_PASSPHRASE=''

# set location of borg's keyfile for a single repository.  
# More secure than using a repokey.  For multiple repos, use BORG_KEYS_DIR.
#export BORG_KEY_FILE='/home/user/.config/borg/keys/mykey.key'
#export BORG_KEYS_DIR='/home/user/.config/borg/keys'

# set the location of an SSH key for a remote borg server
#export BORG_RSH='ssh -i /home/user/.ssh/id_ed25519'

# set the repository path for borg
# examples:
#    export BORG_REPO='/path/to/repo'  # local directory location
#    export BORG_REPO='user@host:/path/to/repo'  # remote borg server location
#export BORG_REPO=""

# Set a sane cache TTL.  The default is 20.
# Increase this value if you have more than 20 archives to avoid chunking performance penalty.
# In this example, we programmatically set the TTL by multiplying a count of user home 
# directory contents then multiplying by 4.
export BORG_FILES_CACHE_TTL=$(expr `ls /home/* | wc -l` \* 4)

# If you're running a system-wide backup,
# it may make sense to use system-wide paths
#export BORG_KEYS_DIR=/etc/backup/default/keys
#export BORG_SECURITY_DIR=/etc/backup/default/security
#export BORG_CACHE_DIR=/var/cache/backup/default

# If you want to add additional options to borg's command line, add them here.  
# Make sure to add a trailing space before the end quote.
#OPT_BORG=" "
#OPT_BORG_CREATE=" "
#OPT_BORG_PRUNE=" "
OPT_BORG_COMPACT="--cleanup-commits --threshold 10 "

# if you want to have verbose output during manual run
# but not on cron-calls, uncomment this.
#if tty &>/dev/null; then
#	OPT_BORG_CREATE+="--verbose --progress --stats"
#	OPT_BORG_PRUNE+="--verbose --list --progress --stats"
#   OPT_BORG_COMPACT+="--verbose --progress"
#fi

# These paths should get saved in the archive.
SOURCES=(/)

# Exclude directories that contain a CACHEDIR.TAG file (see https://www.bford.info/cachedir/)
#OPT_BORG_EXCLUDE_CACHES="--exclude-caches"

# Exclude directories that are tagged by containing a filesystem object with the given NAME. For this example, it is a file called '.nobackup'.
#OPT_BORG_EXCLUDE_IF_PRESENT="--exclude-if-present .nobackup"

# The archives have the naming scheme of
# <hostname><suffix>-<date>
# so setting <suffix> to something meaningful
# prepended with a - is a good choice
#SUFFIX="-full"

# Keep the amount of archives in the given
# interval with borg's pruning option
# The KEEP_<interval> vars correspond to
# borg prune --keep-<interval>=. See borg prune --help
# for more information
KEEP_WITHIN=10H
KEEP_HOURLY=15
KEEP_DAILY=7
KEEP_WEEKLY=4
KEEP_MONTHLY=12
KEEP_YEARLY=99

# Keep the minimal amount of archives unconditionally,
# ignoring all other KEEP_ options.
# Set this at least to 1, if you execute prune before create
KEEP_LAST=1