Server patching email notification linux script - linux

Question

I need to create an email notification linux script which can be used in the server patching activity. I have created one script for the same but getting some errors. Can anyone please check what's the issue.
Script -
#email constants
export to_addresses=xyz#abc.com
auth_1_app_path=/export/home/apps/test1/dev1;
function sendServerPatchingSuccessMail()
{
printf "HI Team,\r\n\r\nServer patching activity has been done successfully.\r\n\r\nRequest eText DEV team to validate the server patching changes.\r\n\r\nTotal time taken = $(( ($end_date-$start_date) / ( 60) )) minutes.\r\n\r\nRegards,\r\nAdmin\r\n\r\nNote: This is an auto generated mail, please do not reply. " | mail -s "server patching activity is done sucessfully." $to_addresses -c $cc_addresses
}
function sendServerPatchingStartMail()
{
printf "Hi Team,\r\n\r\nServer patching activity has started at $start_date.\r\n\r\nRequest eText DEV team to validate the server patching changes once they receive the server patching success mail.\r\n\r\nRegards,\r\nAdmin\r\n\r\nNote: This is an auto generated mail, please do not reply. " | mail -s "server patching activity has started." $to_addresses -c $cc_addresses
}
#define list of hosts as array
servers_array=( bookvm04 #DEV1
);
function doWork() {
start_date=$(date +%Y%m%d%H%M%S);
sendServerPatchingStartMail
#stop tomcat on all hosts
echo "`date "+%Y-%m-%d %H:%M:%S"` Stop tomcat stop."
#start for each host
for i in "${servers_array[#]}"
do
export ssh_to_remote_host="ssh -l bookweb -i /export/home/apps/bookplus/.ssh/id_dsa "
case $i in
#DEV1 Book Server
b3bookvm05)
app_path=$view_1_app_path;
;;
#DEV1 Book Server
b3bookvm04)
app_path=$auth_1_app_path;
;;
*) echo "`date "+%Y-%m-%d %H:%M:%S"` $i is not a valid option exiting"
exit 0;;
esac #end case
$ssh_to_remote_host $i $app_path/scripts/stopremote
if [ "$?" -ne 0 ]
then
echo "`date "+%Y-%m-%d %H:%M:%S"` node ${i} could not be stopped"
exit 0
fi
end_date=$(date +%Y%m%d%H%M%S);
echo "`date "+%Y-%m-%d %H:%M:%S"` Total time taken = $(( ($end_date- $start_date) / ( 60) )) minutes";
sendServerPatchingSuccessMail
}
Error while executing above script
-bash-4.1$ sh server_patching_alert.sh
: command not foundrt.sh: line 4:
: command not foundrt.sh: line 5:
: command not foundrt.sh: line 9:
: command not foundrt.sh: line 13:
'erver_patching_alert.sh: line 14: syntax error near unexpected token `
'erver_patching_alert.sh: line 14: `function sendServerPatchingSuccessMail()

Answer 1

This script is working fine.
server_array=$(hostname)
function sendServerPatchingSuccessMail()
{
# Set email constants
to_addresses=
cc_addresses=
# Send server patching completion mail
printf "mail body - server patching activity for hostname '$server_array' has been completed successfully" | mail -s "mail subject" -c $cc_addresses $to_addresses
}
sendServerPatchingSuccessMail