Add delete old file feature

backup.sh

@@ -9,7 +9,6 @@ PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin:~/bin
 [[ $EUID -ne 0 ]] && echo 'Error: This script must be run as root!' && exit 1
 
 ### START OF CONFIG ###
-
 # Encrypt flag(true:encrypt, false:not encrypt)
 ENCRYPTFLG=true
 
@@ -31,6 +30,10 @@ LOGFILE="/root/backups/backup.log"
 # OPTIONAL: If you want MySQL to be backed up, enter the root password below
 MYSQL_ROOT_PASSWORD=""
 
+# Below is a list of MySQL database name that will be backed up
+# if you want backup all databases, leave it blank.
+MYSQL_DATABASE_NAME[0]=""
+
 # Below is a list of files and directories that will be backed up in the tar backup
 # For example:
 # File: /data/www/default/test.tgz
@@ -47,15 +50,18 @@ TARFILE="${LOCALDIR}""$(hostname)"_"${BACKUPDATE}".tgz
 # Backup MySQL dump file name
 SQLFILE="${TEMPDIR}mysql_${BACKUPDATE}.sql"
 
+# Number of days to store daily local backups
+LOCALAGEDAILIES="7"
 ### END OF CONFIG ###
 
+
 log() {
     echo "$(date "+%Y-%m-%d %H:%M:%S")" "$1"
     echo -e "$(date "+%Y-%m-%d %H:%M:%S")" "$1" >> ${LOGFILE}
 }
 
-### START OF CHECKS ###
 
+### START OF CHECKS ###
 # Check if the backup folders exist and are writeable
 if [ ! -d "${LOCALDIR}" ]; then
     mkdir -p ${LOCALDIR}
@@ -74,16 +80,14 @@ for BINARY in "${BINARIES[@]}"; do
         exit 1
     fi
 done
+### END OF CHECKS ###
 
 STARTTIME=$(date +%s)
-
+cd ${LOCALDIR} || exit
-cd "${LOCALDIR}" || exit
+log "Backup progress start"
-
-### END OF CHECKS ###
 
 
 ### START OF MYSQL BACKUP ###
-
 if [ -z ${MYSQL_ROOT_PASSWORD} ]; then
     log "MySQL root password not set, MySQL back up skip"
 else
@@ -95,24 +99,39 @@ EOF
         log "MySQL root password is incorrect. Please check it and try again"
         exit 1
     fi
-    mysqldump -u root -p"${MYSQL_ROOT_PASSWORD}" --all-databases > "${SQLFILE}"
-    if [ $? -ne 0 ]; then
-        log "MySQL backup failed"
-        exit 1
-    fi
-    log "MySQL dump completed"
-    log "MySQL dump file name: ${SQLFILE}"
-    #Add MySQL backup dump file to BACKUP list
-    BACKUP=(${BACKUP[*]} ${SQLFILE})
-fi
 
+    if [ "${MYSQL_DATABASE_NAME[*]}" == "" ]; then
+        mysqldump -u root -p"${MYSQL_ROOT_PASSWORD}" --all-databases > "${SQLFILE}"
+        if [ $? -ne 0 ]; then
+            log "MySQL all databases backup failed"
+            exit 1
+        fi
+        log "MySQL all databases dump file name: ${SQLFILE}"
+        #Add MySQL backup dump file to BACKUP list
+        BACKUP=(${BACKUP[*]} ${SQLFILE})
+    else
+        for db in ${MYSQL_DATABASE_NAME[*]}
+        do
+            unset DBFILE
+            DBFILE="${TEMPDIR}${db}_${BACKUPDATE}.sql"
+            mysqldump -u root -p"${MYSQL_ROOT_PASSWORD}" ${db} > "${DBFILE}"
+            if [ $? -ne 0 ]; then
+                log "MySQL database name [${db}] backup failed, please check database name is correct and try again"
+                exit 1
+            fi
+            log "MySQL database name [${db}] dump file name: ${DBFILE}"
+            #Add MySQL backup dump file to BACKUP list
+            BACKUP=(${BACKUP[*]} ${DBFILE})
+        done
+    fi
+
+    log "MySQL dump completed"
+
+fi
 ### END OF MYSQL BACKUP ###
 
 
 ### START OF TAR BACKUP ###
-
-log "Backup progress start"
-
 log "Tar backup file start"
 tar -zcPf ${TARFILE} ${BACKUP[*]}
 if [ $? -ne 0 ]; then
@@ -129,10 +148,15 @@ if ${ENCRYPTFLG}; then
 
     # Delete unencrypted tar
     log "Delete unencrypted tar file"
-    rm -f "${TARFILE}"
+    rm -f ${TARFILE}
 fi
 
+# Delete MySQL temporary dump file
+log "Delete MySQL temporary dump file"
+rm -f ${TEMPDIR}*.sql
+
 log "Backup progress complete"
+
 if ${ENCRYPTFLG}; then
     BACKUPSIZE=$(du -h ${TARFILE}.enc | cut -f1)
     log "File name: ${TARFILE}.enc, File size: ${BACKUPSIZE}"
@@ -141,7 +165,7 @@ else
     log "File name: ${TARFILE}, File size: ${BACKUPSIZE}"
 fi
 
-# Transfer file to Google Drive
+# Transfer backup file to Google Drive
 # If you want to install gdrive command, please visit website:
 # https://github.com/prasmussen/gdrive
 # of cause, you can use below command to install it
@@ -152,16 +176,61 @@ if [ ! "$(command -v "gdrive")" ]; then
     log "gdrive is not installed"
     log "File transfer skipped. please install it and try again"
 else
-    log "Tranferring tar backup to Google Drive"
+    log "Tranferring backup file to Google Drive"
     if ${ENCRYPTFLG}; then
         gdrive upload --no-progress ${TARFILE}.enc >> ${LOGFILE}
     else
         gdrive upload --no-progress ${TARFILE} >> ${LOGFILE}
     fi
-    log "File transfer completed"
+    log "Tranfer completed"
+fi
+### END OF TAR BACKUP ###
+
+
+### START OF DELETE OLD BACKUP FILE###
+getFileDate() {
+    unset FILEYEAR FILEMONTH FILEDAY FILETIME FILEDAYS FILEAGE
+    FILEYEAR=$(echo "$1" | cut -d_ -f2 | cut -c 1-4)
+    FILEMONTH=$(echo "$1" | cut -d_ -f2 | cut -c 5-6)
+    FILEDAY=$(echo "$1" | cut -d_ -f2 | cut -c 7-8)
+    FILETIME=$(echo "$1" | cut -d_ -f2 | cut -c 9-14)
+
+    if [[ "${FILEYEAR}" && "${FILEMONTH}" && "${FILEDAY}" && "${FILETIME}" ]]; then
+        #Approximate a 30-day month and 365-day year
+        FILEDAYS=$(( $((10#${FILEYEAR}*365)) + $((10#${FILEMONTH}*30)) + $((10#${FILEDAY})) ))
+        FILEAGE=$(( 10#${DAYS} - 10#${FILEDAYS} ))
+        return 0
+    fi
+
+    return 1
+}
+
+AGEDAILIES=${LOCALAGEDAILIES}
+DAY=$(date +%d)
+MONTH=$(date +%m)
+YEAR=$(date +%C%y)
+#Approximate a 30-day month and 365-day year
+DAYS=$(( $((10#${YEAR}*365)) + $((10#${MONTH}*30)) + $((10#${DAY})) ))
+
+cd ${LOCALDIR} || exit
+
+if ${ENCRYPTFLG}; then
+    LS=($(ls *.enc))
+else
+    LS=($(ls *.tgz))
 fi
 
-### END OF TAR BACKUP ###
+for f in ${LS[*]}
+do
+    getFileDate ${f}
+    if [ $? == 0 ]; then
+        if [[ ${FILEAGE} -gt ${AGEDAILIES} ]]; then
+            rm -f ${f}
+            log "Old backup file name:${f} has been deleted"
+        fi
+    fi
+done
+### END OF DELETE OLD BACKUP FILE###
 
 
 ENDTIME=$(date +%s)