#!/bin/bash
#
# df with some options and colored if Alert levels are exceeded
# (c) GPL by Ulf Bartolomäus
VERSION="Version 0.1.1  from 13.02.2021"
# 0.1.1
#	Initial based on whatch_new

MyDfC='df -hTx tmpfs -x devtmpfs'							## df - command - w/o *tenpfs 
MyDfCnN='df -hTx tmpfs -x devtmpfs -x fuse -x nfs4'					## df - command - w/o *tenpfs, fuse and nfs4
#MyDfC="${MyDfCnN}"									## uncomment to overwrite wit additional fuse and nfs4 filesystems
MyDfAlert1=80                    							## alert level of df
MyDfAlert2=90										## critical alert level of df

## Escape sequences for color
esc=$(echo -en "\033")									## define esc sequence
dick="${esc}[1m"									## define bold sequence
rot="${esc}[1;31m"									## define red sequence
gruen="${esc}[1;32m"									## define green sequence
gelb="${esc}[1;33m"									## define yellow sequence
blau="${esc}[1;34m"									## define blue sequence
lila="${esc}[1;35m"									## define purple sequence
norm=$(echo -en "${esc}[m\017")								## define default sequence

## DiskFree (only if not the same device => uniq check first 40 characters
${MyDfC} | uniq -w40 | while read MyOutput; do						## Execute df and filter doublicates - for each row stored in MyOutput
	MyDfUsage=$(echo ${MyOutput} | awk '{ print $6}' | cut -d'%' -f1 )		## Search Usage in %
    if [[ ! $( echo "${MyDfUsage}" | grep [[:digit:]] ) ]] ; then			## If first row
        echo -e ${dick}"${MyOutput}"${norm}						## Echo in bold
    elif [ $(( ${MyDfUsage} )) -ge ${MyDfAlert2} ]; then				## If critical level excited
        echo -e ${rot}"${MyOutput}"${norm}						## Echo in red
    elif [ $(( ${MyDfUsage} )) -ge ${MyDfAlert1} ]; then				## If alert level excited 
        echo -e ${gelb}"${MyOutput}"${norm}						## Echo in yellow
    else										## default
        echo -e ${gruen}"${MyOutput}"${norm}						## Echo in green
    fi
done