chksysload.bash

Muy útil cuando no se tiene instalado Cacti.
Nombre: chksysload.bash
Autor: nixcraft
Visto en nixcraft

#!/bin/bash
# 
# Script to notify admin user if Linux,FreeBSD load crossed certain limit
# It will send an email notification to admin.
#
# Copyright 2005 (c) nixCraft project
# This is free script under GNU GPL version 2.0 or above. 
# Support/FeedBack/comment :  http://cyberciti.biz/fb/
# Tested os: 
# * RedHat Linux
# * Debain Linux
# * FreeBSD
# -------------------------------------------------------------------------
# This script is part of nixCraft shell script collection (NSSC)
# Visit http://bash.cyberciti.biz/ for more information.
# -------------------------------------------------------------------------
 
# Set up limit below
NOTIFY="6.0"
 
# admin user email id
EMAIL="root"
 
# Subject for email
SUBJECT="Alert $(hostname) load average"
 
# -----------------------------------------------------------------
 
# Os Specifc tweaks do not change anything below ;)
OS="$(uname)"
TRUE="1"
if [ "$OS" == "FreeBSD" ]; then
        TEMPFILE="$(mktemp /tmp/$(basename $0).tmp.XXX)"
 FTEXT='load averages:'
elif [ "$OS" == "Linux" ]; then
        TEMPFILE="$(mktemp)"
 FTEXT='load average:'
fi
 
 
# get first 5 min load
F5M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f1) | sed 's/ //g'"
# 10 min
F10M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f2) | sed 's/ //g'"
# 15 min
F15M="$(uptime | awk -F "$FTEXT" '{ print $2 }' | cut -d, -f3) | sed 's/ //g'"
 
# mail message
# keep it short coz we may send it to page or as an short message (SMS)
echo "Load average Crossed allowed limit $NOTIFY." >> $TEMPFILE
echo "Hostname: $(hostname)" >> $TEMPFILE
echo "Local Date & Time : $(date)" >> $TEMPFILE
 
# Look if it crossed limit
# compare it with last 15 min load average
RESULT=$(echo "$F15M > $NOTIFY" | bc)
 
# if so send an email
if [ "$RESULT" == "$TRUE" ]; then
        mail -s "$SUBJECT" "$EMAIL" < $TEMPFILE
fi
 
# remove file 
rm -f $TEMPFILE

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Eliminar Procesos Zombies

Autor: @WizardIP
Función: Ubica y elimina procesos zombies

#!/bin/bash

#Alice.bash xD Ubica y elimina procesos zombies.

sudo ls &>/dev/null
if [ $? -ne 0 ]; then
        echo "El usuario no tiene permisos de administrador"
exit 1
fi


if [ $# -ne 1 ]
 then
  echo "-z: Ubica los procesos zombies"
  echo "-k: mata procesos zombies"
  exit 1
fi

if [ $1 == "-z" ]
 then
  echo "Procesos zombies"
  ps -A -ostat,ppid,pid,cmd | grep -e '^[Zz]'
  exit 0
fi

if [ $1 == "-k" ]
 then
  echo "Eliminando procesos zombies"
  kill -HUP `ps -A -ostat,ppid,pid,cmd | grep -e '^[Zz]' | awk '{print $2}'`
  exit 0
fi

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