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Allow like-named environment variables to override configurable points #9

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Allow like-named environment variables to override configurable points #9

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24 changes: 19 additions & 5 deletions buds
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Original file line number Diff line number Diff line change
Expand Up @@ -14,13 +14,27 @@ if [ "$#" -ne 2 ]; then
exit 1
fi

DATESTART=$(date +%Y%m%d-%H%M%S)
BACKUPDIR="$HOME/buds/backup/$DATESTART"
LOGFILE=$BACKUPDIR/backup.log
CLICKFILE="$BACKUPDIR/clicks.list"
DEVICEUSER="phablet"
#set -vexu

HOST="$1"
PASSPHRASE="$2"

DATESTART=$(date +%Y%m%d-%H%M%S)

#
# While a bit harder to read, using the "A=${A:-DEFAULT}" syntax lets any one
# of these configuration points be overriden by an environment variable from
# the command line without having to modify the script:
#
# e.g. BACKUPSUPER=/some/other/dir /opt/buds $IP $PIN
#
BACKUPNAME=${BACKUPNAME:-$DATESTART}
BACKUPSUPER="${BACKUPSUPER:-$HOME/buds/backup}"
BACKUPDIR="${BACKUPDIR:-$BACKUPSUPER/$BACKUPNAME}"
LOGFILE="${LOGFILE:-$BACKUPDIR/backup.log}"
CLICKFILE="${CLICKFILE:-$BACKUPDIR/clicks.list}"
DEVICEUSER="${DEVICEUSER:-phablet}"

# Tar extra parameters
# gstreamer: causes video playback issues if restoring the backup
# on different hardware
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