TerabyteTerminator/tools/db/bash-lib

#!/bin/bash
#Bash-Library for TerabyteTerminator Project
LIBVER=1.1

{ #set enviroemnt
    readonly TRUE=1                            #like <stdbool.h>
    readonly FALSE=0                           #like <stdbool.h>
    readonly TTSYNC_EXIST=0                    #file exist local
    readonly TTSYNC_BACKUP=1                   #file exist local - backup exist
    readonly TTSYNC_REMOTE=2                   #file exists remote - not used jet
    readonly TTSYNC_DEL=3                      #local file deleted
    readonly globalconf="/etc/tt/global"
    [ -z "$DEBUG" ] && readonly DEBUG=$FALSE
}

# file_size <path> -> (du -b)/1024  [Kb]
function file_size() {
    if [ -f "$1" ]; then
        echo $(($(du -b "$1" | cut -f 1)/1024))
    else
        echo 0
    fi
}

# db_check -> TRUE/FALSE
function db_check()  {
    db_query "SHOW GRANTS FOR CURRENT_USER();" > /dev/null 2> /dev/null
    if [ $? == 0 ]; then
        echo $TRUE
    else
        echo $FALSE
    fi
}

# db_query <query> -> result
function db_query() {
    local args="-sN"  #no headers, no grid
    args+=" -h$dbhost"
    args+=" -u$dbuser"
    [ -n "$dbpwd" ] && args+=" -p$dbpwd"
    args+=" $dbname"
    [ $DEBUG == $TRUE ] && echo $@ >&2
    echo $@ | mysql $args
}