Shell script to get uptime, disk usage, cpu usage, RAM usage, system load, etc; from multiple Linux servers and output the information on a single server in html format

# Shell script to get uptime, disk usage, cpu usage, RAM usage,system load,etc. 
# from multiple Linux servers and output the information on a single server 
# in html format. Read below for usage/installation info
# *---------------------------------------------------------------------------*
# * dig_remote_linux_server_information.bash,v0.1, last updated on 25-Jul-2005*
# * Copyright (c) 2005 nixCraft project                                       *
# * Comment/bugs:                                    *
# * Ref url:           *
# * This script is licensed under GNU GPL version 2.0 or above                *
# *---------------------------------------------------------------------------*
# *  Installation Info                                                        *
# ----------------------------------------------------------------------------*
# You need to setup ssh-keys to avoid password prompt, see url how-to setup 
# ssh-keys:
# [1] You need to setup correct VARIABLES script:
# (a) Change Q_HOST to query your host to get information
# Q_HOST=""
# (b) Setup USR, who is used to connect via ssh and already setup to connect 
# via ssh-keys
# USR="nixcraft"
# (c)Show warning if server load average is below the limit for last 5 minute.
# setup LOAD_WARN as per your need, default is 5.0
# (d) Setup your network title using MYNETINFO
# MYNETINFO="My Network Info"
# (e) Save the file 
# Please refer to forum topic on this script: 
# Also download the .gif files and put them in your output dir
# ----------------------------------------------------------------------------
# Execute script as follows (and copy .gif file in this dir) :
# > /var/www/html/info.html
# ============================================================================
# This script is part of nixCraft shell script collection (NSSC)
# Visit for more information.
# -------------------------------------------------------------------------
# SSH SERVER HOST IPS, setup me 
# Change this to query your host
# SSH USER, change me
# Show warning if server load average is below the limit for last 5 minute
# Your network info
MYNETINFO="My Network Info"
# if it  is run as cgi we can do reload stuff too :D
PBY='Powered by <a href="">script</a>'
# font colours
GREEN='<font color="#00ff00">'
RED='<font color="#ff0000">'
# Local path to ssh and other bins
## functions ##
 echo '<HTML><HEAD><TITLE>Network Status</TITLE></HEAD>
 <BODY alink="#0066ff" bgcolor="#000000" link="#0000ff" text="#ccddee" vlink="#0033ff">'
 echo '<CENTER><H1>'
 echo "$MYNETINFO</H1>"
 echo "Generated on $NOW"
 echo '</CENTER>'
 echo "<HR><center>$PBY</center>"
  echo "</BODY></HTML>"
## main ##
echo '<TR VALIGN=TOP>'
for host in $Q_HOST
  #echo '<TD WIDTH=33% BGCOLOR="#0099ff">'
  echo '<TD BGCOLOR="#0099ff">'
  _CMD="$SSH $USR@$host"
  rhostname="$($_CMD hostname)"
  ruptime="$($_CMD uptime)"
  if $(echo $ruptime | grep -E "min|days" >/dev/null); then
    x=$(echo $ruptime | awk '{ print $3 $4}')
    x=$(echo $ruptime | sed s/,//g| awk '{ print $3 " (hh:mm)"}')
  rload="$($_CMD uptime |awk -F'average:' '{ print $2}')"
  x="$(echo $rload | sed s/,//g | awk '{ print $2}')"
  y="$(echo "$x >= $LOAD_WARN" | bc)"
  [ "$y" == "1" ] && rload="$RED $rload (High) $NOC" || rload="$GREEN $rload (Ok) $NOC"
  rclock="$($_CMD date +"%r")"
  rtotalprocess="$($_CMD ps axue | grep -vE "^USER|grep|ps" | wc -l)"
  rfs="$($_CMD df -hT | grep -vE "^Filesystem|shm" \
  | awk 'BEGIN{print "<ul>"}{w=sprintf("%d",$6);print "<li>" $7 \
  "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;" $6 \
  "(" $2 ")<BR> <img src=\"indicator.gif\" height=\"4\" width=\"" w "\"> \
  <BR><img src=\"graph.gif\"> \
  <BR>" $4"/"$3 "</li>"}END{ print "</ul>"}')"
  rusedram="$($_CMD free -mto | grep Mem: | awk '{ print $3 " MB" }')"
  rfreeram="$($_CMD free -mto | grep Mem: | awk '{ print $4 " MB" }')"
  rtotalram="$($_CMD free -mto | grep Mem: | awk '{ print $2 " MB" }')"
  $PING -c1  $host>/dev/null
  if [ "$?" != "0" ] ; then
    rping="$RED Failed $NOC"   
    rping="$GREEN Ok $NOC"
    echo "<b><u>$rhostname</u></b><BR>" 
    echo "Ping status: $rping<BR>"
    echo "Time: $rclock<BR>"
    echo "Uptime: $ruptime <BR>"
    echo "Load avarage: $LSTART $rload $LEND"
    echo "Total running process: $LSTART $rtotalprocess $LEND"
    echo "Disk status:"
    echo "$rfs"
    echo "Ram/swap status:<ul>" 
    echo "<li>Used RAM: $rusedram</li>" 
    echo "<li>Free RAM: $rfreeram</li>"
    echo "<li>Total RAM: $rtotalram </li></ul>"
  echo "</td>"
  echo "</tr></table>"
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18 comments… add one
  • soulaf May 7, 2012 @ 18:19

    cane i have a help on my project please?
    i’m a student in univercity in morocco and i have a project to do before the end of this week
    create a shell script with the name infoprocess wich ,when i tappe name proc1 name proc2…to name procn shows me informations about them like that:
    i’m waiting for your ansewer and thank you all

  • Lara Feb 10, 2012 @ 10:05

    No lo eiedtnno, me lo podrias explicar mjor paso a poso lo que tengo que hacer para conseguirlo?. Gracias

  • Samet Atdag Sep 15, 2011 @ 14:17

    Thanks, great tool.
    We’ve got several servers at job, and they have different username/passwords. So I’ve modified the script to get servers with different usernames/passwords.

    I put the script to Github, here you can use if you want that version:

  • Mark Apr 4, 2010 @ 23:02

    Thanks for this code.

    I am new to bash script and am making an application to gather system info. Your example of how too get CPU and RAM info is great.

  • Scrummie02 Dec 1, 2009 @ 21:09

    I’m getting this when running the script:
    awk: BEGIN{print ”
    awk: ^ unterminated string

    has anyone seen this before?

    • Ankur Dec 15, 2009 @ 7:32

      u can make them in one line.. its just bcoz of the spacing problem in the script..

  • amran Jun 23, 2009 @ 9:16

    i am new in scripting. i try run this script, but it always promt me password

    [root@amranlinux src]# ./check-linux
    Network Status

    My Network Info
    Generated on Tue Jun 23 17:16:07 MYT 2009

    root@’s password:

    • tyrobert Oct 12, 2011 @ 21:09

      hey did u ever figure out the issue here? I am running into the same problem

  • 🐧 Vivek Gite Apr 15, 2009 @ 1:10
  • krish Apr 13, 2009 @ 14:13

    where are those gif files?

  • Palani Oct 3, 2008 @ 12:51

    i am very new to shell script program, i tried u r script but i don’t know how to proceed
    and if run the script i am getting this error
    kindly guide me how to run the script ,

    script output !

    My Network Info
    <span style=color:
    Generated on Fri Oct 3 16:41:02 GMT 2008

    ./ line 110: syntax error near unexpected token `newline’
    ./ line 110: ` echo ”

    thanks & regards


  • Panya Jul 10, 2008 @ 1:25

    This link

    is no longer valid…..

  • idiot hunter Jun 10, 2008 @ 7:35

    Moussa NDIAYE: If you were such a “guru” you would probably guess that he just copied the script as is,
    cat -n somefile gets you linenumbers…guru my ass ;)

  • Moussa NDIAYE May 26, 2008 @ 22:53

    Hello Dipak.

    We cannot read what you put in lines 110 and 126.
    Try to be more explicit.. (next time if you want gurus to help you try to give them the informatons they need to debug ).

    this script is running under the linux box and display the results on a page, so try to visit http://the_server_where_the_script_is_running/info.html.

    Try it it post your results …

  • Dipak May 7, 2008 @ 23:15

    I have installed this script in to /var/www/html/ directory and changed name to info.html.
    I ran this script from command line
    and I got an error line 110
    and 126

    What is next how do I run this script?

    • Yoyo Jul 6, 2009 @ 13:40


      You cannot simply rename a Bash script to *.html.

      from the comments within the script itself:
      # Execute script as follows (and copy .gif file in this dir) :
      # > /var/www/html/info.html


  • n2j3 Apr 22, 2008 @ 7:04

    echo “Load avarage: $LSTART $rload $LEND”

    should really read

    echo “Load average: $LSTART $rload $LEND”

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