Ajout du temps au travail de MySqldump Cron?

Bien que mon script d'origine fonctionne, quelque chose comme ceci peut être beaucoup plus simple:

#!/bin/bash
###########################################################################
# snapshot
#
#     Rotates snapshots of backups using hard links
#
#     Keeps track of:
#          - 48 hours of snapshots (48*60/interval)
#          - 60 days worth of midnight snapshots
#          - 24 months of snapshots from the 1st
#     Ussage:
#          snapshot /path/to/backup.sql.gz
#          mysqldump ... | gzip -c | snapshot /path/to/backup.sql.gz
#
###########################################################################

if ! hash date 2> /dev/null; then
        echo "-snapshot: date command not found" 1>&2
        exit 1
fi

if ! hash ln 2> /dev/null; then
        echo "-snapshot: ln: command not found" 1>&2
        exit 1
fi

# Date Info

month=$(date +"%b")
day=$(date +"%d")
year=$(date +"%Y")
time=$(date +"%H_%M")
date=$(date +"%d%b%Y")
dateFirst=$(date --date="$month 01" +"%d%b%Y" 2> /dev/null)

# Test to see if we're using GNU date or BSD date

if [ "$dateFirst" == "" ]; then
        dateFirst=$(date -v1d +"%d%b%Y")
        back2date=$(date -v-2d +"%d%b%Y")
        back2monthY=$(date -v-2m +"%b%Y")
        back2year=$(date -v-2y +"%Y")
else
        back2date=$(date --date="-2 day" +"%d%b%Y")
        back2monthY=$(date --date="-2 month" +"%b%Y")
        back2year=$(date --date="-2 year" +"%Y")
fi

if [ "$dateFirst" == "" ]; then
        echo "-snapshot: Unknown version of date command." 1>&2
        exit 1
fi

# Directories

filepath=$1
backup=$2

if [ "$filepath" == "" ]; then
        echo "-snapshot: Expecting filename as first argument" 1>&2
        exit 1
fi

if [ "$backup" == "" ]; then
        backup=/backup
fi

if [ ! -d "$backup" ]; then
        echo "-snapshot: Directory "$backup" doesn't exist" 1>&2
        exit 1
fi

snapshots=$backup/snapshots
daily=$backup/daily
monthly=$backup/monthly
basename=${filepath##*/}
ext=${basename#*.}
basename=${basename%%.*}
filename=$basename-$date-$time.$ext

##############################
# Make new snapshot
##############################

if [ ! -d "$snapshots/$date" ]; then
        mkdir -p "$snapshots/$date"
fi

if [ -t 0 ]; then
        if [ ! -f "$filepath" ]; then
                echo "-snapshot: '$filepath' doesn't exist" 1>&2
                exit 1
        fi

    ln "$filepath" "$snapshots/$date/$filename"
else
    cat > "$snapshots/$date/$filename"
fi

##############################
# Daily/monthly snapshots
##############################

if [ "$time" == "00_00" ]; then
        if [ ! -d "$daily/$month$year" ]; then
                mkdir -p "$daily/$month$year"
        fi

        ln "$snapshots/$date/$filename" "$daily/$month$year/$filename"

        if [ "$day" == "01" ]; then
                if [ ! -d "$monthly/$year" ]; then
                        mkdir -p "$monthly/$year"
                fi

                ln "$snapshots/$date/$filename" "$monthly/$year/$filename"
        fi
fi

##############################
# Clean up old snapshots
##############################

if [ -d "$snapshots/$back2date" ]; then
        rm -fr "$snapshots/$back2date"
fi

if [ -d "$daily/$back2monthY" ]; then
        rm -fr "$daily/$back2monthY"
fi

if [ -d "$monthly/$back2year" ]; then
        rm -fr "$monthly/$back2year"
fi

Si vous voulez tout faire dans l'entrée CRONTAB (et non un script shell), voici comment:

/usr/bin/mysqldump -u[username] -p[password] --all-databases --single-transaction > /home/[domain]/public_html/backups/full_backup_`date +\%F_\%R`.sql