Bash Script Disk Space Utilization Report and EMail
•
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This bash script generates an HTML disk usage report and emails it. It collects disk usage information using df, formats it into an HTML table, and emails the report. If disk usage exceeds 90%, the row is highlighted red and a critical alert is shown. Usage between 70-80% is highlighted orange. The report is generated daily and emailed to a recipient.
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![Bash Script To Generate Disk Usage Report and E-Mail
Overview
The purpose of this document is to generate HTML Disk usage report and email the report.
Applies To
CentOS 7, RHEL 7
Pre-requisites
Bash
Shell Script Snippet
#!/bin/bash
#
# Environment Variables
#
TODAY="at $(date '+%H:%M on %d-%b-%y')"
OutputFilename=$(date +"%b_%d_%Y".html)
#
# Remove old HTML File
#
if [ -f /tmp/${OutputFilename} ]; then
rm -f /tmp/${OutputFilename}
fi
#
# Create HTML File with Table
#
(
echo '<HTML><HEAD><TITLE>Disk Usage Statistics</TITLE></HEAD>'
echo '<BODY>'
echo '<H3>Disk Usage Report for server - '$(uname -n)'</H3>'
echo '<P>Report Generated '${TODAY}'</P>'
echo '<TABLE BORDER=3 CELLSPACING=2 CELLPADDING=0>'
echo '<TR BGCOLOR="#5CE6E6"> <TH>Filesystem</TH> <TH>1024 blocks (Total)</TH> <TH>Disk
Used</TH> <TH>Available</TH> <TH>Percentage Info</TH> <TH>Mounted On</TH> <TH>Critical
Alert</TH></TR>'](https://image.slidesharecdn.com/linuxdiskspaceutilizationreport-151103125345-lva1-app6891/85/Bash-Script-Disk-Space-Utilization-Report-and-EMail-1-320.jpg)
![Bash Script To Generate Disk Usage Report and E-Mail
#
# Collate Disk Usage Information
#
df -Pml |awk 'NR>1 && NF==6'|sort|while read FileSystem Size DiskUsed DiskFree DiskPercentUsed
MountPoint
do
PERCENT=${DiskPercentUsed%%%}
#
# Verify if disk usage is greater equal to, than set threshold limit - 90%
#
if [[ ${PERCENT} -ge 90 ]];
then
COLOR=red
CRITICALALERT="Yes, Notify"
#
# If the disk space used is greater than 70% and less than 80% set alert color as orange
#
elif [ ${PERCENT} -ge 70 ] && [ ${PERCENT} -le 80 ];
then
COLOR=orange
CRITICALALERT="No"
#
# Other usage percentage set color as green
#
else
COLOR=green
CRITICALALERT="NA"
fi
#
# Create Table Columns
#
echo '<TR><TD>'$FileSystem'</TD><TD ALIGN=RIGHT>'$Size'</TD>'
echo '<TD ALIGN=RIGHT>'$DiskUsed'</TD><TD ALIGN=RIGHT>'$DiskFree'</TD>'
echo '<TD><TABLE BORDER=0 CELLSPACING=3 CELLPADDING=0>'
echo '<TR><TD WIDTH='$((2 * $PERCENT))' BGCOLOR="'$COLOR'"></TD>'
echo '<TD WIDTH='$((2 * (100 - $PERCENT)))' BGCOLOR="gray"></TD>'
echo '<TD><FONT FONT-WEIGHT="bold" SIZE=-1
COLOR="'$COLOR'">'$DiskPercentUsed'</FONT></TD>'
echo '<TR></TABLE></TD><TD>'$MountPoint'</TD>'
echo '<TD><FONT font-weight="bold">'$CRITICALALERT'</TD></FONT></TR>'
done
echo '</TABLE><P><FONT font-weight="bold">By IT Team</P><BODY></HTML>'
) | tee ${0##*/}.html](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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The Korn Shell is the UNIX shell (command execution program, often called a command interpreter) that was developed by David Korn of Bell Labs as a comprehensive, combined version of other major UNIX shells. Incorporating all the features of the C shell (csh) and the Tab C-shell (tcsh) with the script language features similar to that of the Bourne Shell, the Korn Shell is considered the most efficient shell. Korn, Bourne, and C are the 3 most commonly used UNIX shells. You will be using the Korn Shell (ksh) for this project in which you will be writing shell script files.
1.
Begin by executing the following command from a terminal session in your Ubuntu system:
sudo apt-get install ksh
You will immediately be asked to enter your password (csci345). This will install the Korn shell into your Ubuntu system on your PC or Mac for use in this project. Simply type
ksh
and to go into the Korn Shell (your system prompt will change to $ only) and then enter CTRL-D to exit out of it (your default system prompt of
[email protected]
:~$ will re-appear).
As you go through this exercise and start writing shell scripts, you will learn some additional troubleshooting tips to help you navigate through the Korn Shell (ksh).
Keep track of some of these tips (5 of them) and put them into a Word document in a list format with explanations (at least 150 words in current APA format). Make sure that these are different from those mentioned in the textbook.
2.
Do some research on what the Korn Shell is about and what it has to offer. Provide some basic information (3–5 key points) in a short report (at least 150 words in current APA format) and compile it into the same Word document as above and submit it with this project. Also, provide 5–7 positive features of the Korn Shell (ksh) in the same report (at least 150 words in current APA format) in a list. Below are 3 websites that can assist you in this effort. You will need at least 2 external references for this short report (in addition to your textbook):
-
http://kornshell.com/
-
http://www.dartmouth.edu/~rc/classes/ksh/print_pages.shtml
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http://www.bolthole.com/solaris/ksh.html
There are many other websites out there that will give you additional help, if needed. Take a look at the ksh shell script below. There are 3 versions of essentially the same program, which is a wrapper to edit a file under SCCS version control. The basic task is to use the sccs command to “check out” a file under version control and then automatically edit the file. The script will then be used by users who may not be particularly advanced UNIX users. Hence, the need for a wrapper script. While the basic functionality is the same across all versions, the differences in safety and usability between the first version and the last (4th) version are worth noting. The first one is extremely bad: it would be written by someone who has just picked up a book on shell scripting and has decided, “I’m a programmer.
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In the fifth annual Global Privacy Benchmarks Survey, we asked over 1,800 global privacy professionals and business executives to share their perspectives on the current state of privacy inside and outside of their organizations. This year’s report focused on emerging areas of importance for privacy and compliance professionals, including considerations and implications of Artificial Intelligence (AI) technologies, building brand trust, and different approaches for achieving higher privacy competence scores.
See how organizational priorities and strategic approaches to data security and privacy are evolving around the globe.
This webinar will review:
- The top 10 privacy insights from the fifth annual Global Privacy Benchmarks Survey
- The top challenges for privacy leaders, practitioners, and organizations in 2024
- Key themes to consider in developing and maintaining your privacy program
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available on those devices, but many of the features provide convenience and capability but sacrifice security. This best practices guide outlines steps the users can take to better protect personal devices and information.
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- 1. Bash Script To Generate Disk Usage Report and E-Mail Overview The purpose of this document is to generate HTML Disk usage report and email the report. Applies To CentOS 7, RHEL 7 Pre-requisites Bash Shell Script Snippet #!/bin/bash # # Environment Variables # TODAY="at $(date '+%H:%M on %d-%b-%y')" OutputFilename=$(date +"%b_%d_%Y".html) # # Remove old HTML File # if [ -f /tmp/${OutputFilename} ]; then rm -f /tmp/${OutputFilename} fi # # Create HTML File with Table # ( echo '<HTML><HEAD><TITLE>Disk Usage Statistics</TITLE></HEAD>' echo '<BODY>' echo '<H3>Disk Usage Report for server - '$(uname -n)'</H3>' echo '<P>Report Generated '${TODAY}'</P>' echo '<TABLE BORDER=3 CELLSPACING=2 CELLPADDING=0>' echo '<TR BGCOLOR="#5CE6E6"> <TH>Filesystem</TH> <TH>1024 blocks (Total)</TH> <TH>Disk Used</TH> <TH>Available</TH> <TH>Percentage Info</TH> <TH>Mounted On</TH> <TH>Critical Alert</TH></TR>'
- 2. Bash Script To Generate Disk Usage Report and E-Mail # # Collate Disk Usage Information # df -Pml |awk 'NR>1 && NF==6'|sort|while read FileSystem Size DiskUsed DiskFree DiskPercentUsed MountPoint do PERCENT=${DiskPercentUsed%%%} # # Verify if disk usage is greater equal to, than set threshold limit - 90% # if [[ ${PERCENT} -ge 90 ]]; then COLOR=red CRITICALALERT="Yes, Notify" # # If the disk space used is greater than 70% and less than 80% set alert color as orange # elif [ ${PERCENT} -ge 70 ] && [ ${PERCENT} -le 80 ]; then COLOR=orange CRITICALALERT="No" # # Other usage percentage set color as green # else COLOR=green CRITICALALERT="NA" fi # # Create Table Columns # echo '<TR><TD>'$FileSystem'</TD><TD ALIGN=RIGHT>'$Size'</TD>' echo '<TD ALIGN=RIGHT>'$DiskUsed'</TD><TD ALIGN=RIGHT>'$DiskFree'</TD>' echo '<TD><TABLE BORDER=0 CELLSPACING=3 CELLPADDING=0>' echo '<TR><TD WIDTH='$((2 * $PERCENT))' BGCOLOR="'$COLOR'"></TD>' echo '<TD WIDTH='$((2 * (100 - $PERCENT)))' BGCOLOR="gray"></TD>' echo '<TD><FONT FONT-WEIGHT="bold" SIZE=-1 COLOR="'$COLOR'">'$DiskPercentUsed'</FONT></TD>' echo '<TR></TABLE></TD><TD>'$MountPoint'</TD>' echo '<TD><FONT font-weight="bold">'$CRITICALALERT'</TD></FONT></TR>' done echo '</TABLE><P><FONT font-weight="bold">By IT Team</P><BODY></HTML>' ) | tee ${0##*/}.html
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