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sync.sh/sync-view.sh: Add .syncrc in backup dir as defaut config file

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Bruno Raoult
2022-07-29 22:48:46 +02:00
parent 1079076fbe
commit 886d634799
2 changed files with 78 additions and 32 deletions
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59
bash/sync-view.sh
View File

@@ -35,13 +35,16 @@
# backuped machine.
#
# -b, --backupdir=DIR
# DIR is the local mount point where the backups can be found. It can
# be a network mount, or the destination directory if the backup was
# local.
# DIR is the local path where the backups can be found. It can be a
# network mount, or the destination directory if the backup was local.
# This option is mandatory.
#
# -c, --config
# A sync.sh configuration file where the script could find variables
# SOURCEDIR (option '-r') and BACKUPDIR (option '-b').
# If this option is missing, the script will try to find a .syncrc file
# in DIR/daily-01 directory, where DIR is the local path of backups
# (option -b).
#
# -d, --destdir
# Directory which will hold links to actual files. It will be created
@@ -74,6 +77,10 @@
# in /mnt to handle links to actual files.
# $ sync-view.sh -c s.conf -b /mnt/backup -x "^(yearly|monthly-0[3-9]).*$" ~/.bashrc
#
# The simplest invocation: the versions of users' .bashrc will be retrieved
# in backups from /mnt/backup. A /mnt/backup/daily-01/.syncrc must exist.
# $ sync-view.sh -b /mnt/backup ~/.bashrc
#
# Links to user's .bashrc backups will be put in /tmp/test. Files are in
# /mnt/backup, which contains backups of /export directory. The /tmp/test
# directory will be created if necessary.
@@ -149,16 +156,21 @@ log() {
return 0
}
# filetype() - get file type
#
# $1: the file to check
#
# @return: 0, output a string with file type on stdout.
filetype() {
local file="$1" type="unknown"
if [[ ! -e "$file" ]]; then
type="missing"
elif [[ -h "$file" ]]; then
type="symlink"
elif [[ -f "$file" ]]; then
type="file"
elif [[ -d "$file" ]]; then
type="directory"
elif [[ -h "$file" ]]; then
type="symlink"
elif [[ -p "$file" ]]; then
type="fifo"
elif [[ -b "$file" || -c "$file" ]]; then
@@ -172,8 +184,8 @@ filetype() {
parse_opts() {
# short and long options
local sopts="1ab:c:d:hmr:vx:"
local lopts="absolute-target,unique,backupdir:,config:,destdir:,help,man,root:,verbose,exclude:"
local tmp tmp_destdir="" tmp_destdir="" tmp_rootdir="" config
local lopts="unique,absolute-target,backupdir:,config:,destdir:,help,man,root:,verbose,exclude:"
local tmp tmp_destdir="" tmp_destdir="" tmp_rootdir="" tmp_config=""
if ! tmp=$(getopt -o "$sopts" -l "$lopts" -n "$CMD" -- "$@"); then
log "Use '$CMD --help' or '$CMD --man' for help."
@@ -195,14 +207,7 @@ parse_opts() {
shift
;;
'-c'|'--config')
config="$2"
if [[ ! -r "$config" ]]; then
printf "%s: Cannot open %s file. Exiting.\n" "$CMDNAME" "$config"
exit 9
fi
# shellcheck source=sync-conf-example.sh
source "$config"
[[ -n "$SOURCEDIR" ]] && ROOTDIR="$SOURCEDIR"
tmp_config="$2"
shift
;;
'-d'|'--destdir')
@@ -240,7 +245,6 @@ parse_opts() {
esac
shift
done
# Now check remaining arguments (configuration file and searched file).
# The configuration file contains the variable SOURCEDIR, which will allow
# to find the relative path of TARGET in backup tree.
@@ -251,7 +255,21 @@ parse_opts() {
exit 1
fi
TARGET="$1"
[[ -z $RESOLVETARGET ]] || TARGET="$(realpath -L "$1")"
[[ -z $RESOLVETARGET ]] || TARGET="$(realpath -L "$TARGET")"
# if $config is not set, look for .syncrc in BACKUPDIR
tmp_config=${tmp_config:-$tmp_backupdir/daily-01/.syncrc}
if [[ -z "$tmp_config" ]]; then
printf "%s: Missing configuration file.\n" "$CMDNAME"
exit 10
elif [[ ! -r "$tmp_config" ]]; then
printf "%s: Cannot open %s file. Exiting.\n" "$CMDNAME" "$tmp_config"
exit 9
fi
# shellcheck source=sync-conf-example.sh
source "$tmp_config"
[[ -n "$SOURCEDIR" ]] && ROOTDIR="$SOURCEDIR"
[[ -n "$tmp_backupdir" ]] && BACKUPDIR="$tmp_backupdir"
[[ -n "$tmp_destdir" ]] && TARGETDIR="$tmp_destdir"
@@ -345,7 +363,7 @@ for file in "${DIRS[@]}"; do
done
if [[ -n "$(ls -A .)" ]]; then
printf "type|modified|inode|size|perms|backup|backup date|path\n"
printf "backup date (backup)|last changed|inode|size|perms|type|path\n"
# for file in {dai,week,month,year}ly-[0-9][0-9]; do
for symlink in *; do
file=$(readlink "$symlink")
@@ -357,14 +375,13 @@ if [[ -n "$(ls -A .)" ]]; then
backup_date=$(date --date="@${INODES[backup-$inode]}" "+%Y-%m-%d %H:%M")
size=$(stat --printf="%s" "$file")
perms=$(stat --printf="%A" "$file")
printf "%s|" "$type"
printf "%s (%s)|" "$backup_date" "$symlink"
printf "%s|" "$date"
#printf "%s|" "$links"
printf "%s|" "$inode"
printf "%s|" "$size"
printf "%s|" "$perms"
printf "%s|" "$symlink"
printf "%s|" "$backup_date"
printf "%s|" "$type"
printf "%s\n" "$file"
# ls -lrt "$TARGETDIR"
done | sort -r

51
bash/sync.sh
View File

@@ -16,12 +16,13 @@
# sync.sh - a backup utility using ssh/rsync facilities.
#
# SYNOPSIS
# sync.sh [OPTIONS] CONFIG
# sync.sh [OPTIONS] [SOURCE_DIR]
#
# DESCRIPTION
# Perform a backup to a local or remote destination, keeping different
# versions (daily, weekly, monthly, yearly). All options can be set in
# CONFIG file, which is mandatory.
# a mandatory configuration file, which is either SOURCE_DIR/.syncrc,
# either set with the '-c' option. See option '-c' below.
# The synchronization is make with rsync(1), and only files changed or
# modified are actually copied; files which are identical with previous
# backup are hard-linked to previous one.
@@ -42,6 +43,10 @@
# depending on the current day or date: daily backup every day,
# weekly every sunday, monthly every first day of month, and yearly
# every Jan 1st.
# -c CONFIG
# Use CONFIG as configuration file. See sync-conf-example.sh.
# If this option is used, the script will ignore SOURCE_DIR/.syncrc
# file.
# -D
# By default, this script re-routes all outputs (stdout and stderr)
# to a temporary file after basic initialization (mainly options
@@ -221,7 +226,8 @@ man() {
}
usage() {
printf "usage: %s [-a PERIOD][-DflmnruvzZ] config-file\n" "$CMDNAME"
printf "usage: %s [-a PERIOD][-c CONFIG][-DflmnruvzZ] [backup_directory]\n" \
"$CMDNAME"
exit 8
}
@@ -417,9 +423,11 @@ exit_handler() {
###############################################################################
# command-line parsing / configuration file read.
parse_opts() {
local _config="" _backup_dir=""
OPTIND=0
shopt -s extglob # to parse "-a" option
while getopts a:DflmnruvzZ todo; do
while getopts a:c:DflmnruvzZ todo; do
case "$todo" in
a)
# we use US (Unit Separator, 0x1F, control-_) as separator
@@ -437,6 +445,13 @@ parse_opts() {
esac
done
;;
c)
_config="$OPTARG"
if [[ ! -f "$_config" ]]; then
printf "%s: invalid %s configuration file\n" "$CMDNAME" "$_config"
usage
fi
;;
f)
FILTERLNK=y
;;
@@ -470,20 +485,34 @@ parse_opts() {
;;
esac
done
# Now check remaining argument (configuration file), which should be unique,
# and read the file.
# Now check remaining argument (backup directory)
shift $((OPTIND - 1))
(( $# != 1 )) && usage
CONFIG="$1"
if [[ ! -r "$CONFIG" ]]; then
printf "%s: Cannot open $CONFIG file. Exiting.\n" "$CMDNAME"
(( $# > 1 )) && usage
if (( $# == 1 )); then
_backup_dir="$1"
if [[ ! -d $_backup_dir ]]; then
printf "%s: %s: not a directory\n" "$CMDNAME" "$_backup_dir"
usage
fi
[[ -f "$_backup_dir/.syncrc" ]] && _config=${_config:-"$_backup_dir/.syncrc"}
fi
# see https://unix.stackexchange.com/questions/406216
CONFIG=$(realpath -sm "$_config")
if [[ -z "$CONFIG" ]]; then
printf "%s: Missing configuration file\n" "$CMDNAME"
exit 9
elif [[ ! -r "$CONFIG" ]]; then
printf "%s: Cannot open %s file\n" "$CMDNAME" "$CONFIG"
exit 9
fi
# shellcheck source=sync-conf-example.sh
source "$CONFIG"
LOCKDIR="/tmp/$CMDNAME-$HOSTNAME-${CONFIG##*/}.lock"
# _backup_dir takes precedence on SOURCEDIR (useless ?)
SOURCEDIR=${_backup_dir:-$SOURCEDIR}
}
parse_opts "$@"