To set a simple monitor on Linux / Unix, I have two simple scripts: DSAlert.sh : Shell script for retrieving disk space percentages and put in to a cron job. If the file exists then sendmail to two email addresses. I have a cron job that executes a shell script like following. If the file exists, it will e-mail the contents of the file to mail_ID@somedomain.com and then move the file to another location (so that the same file is not sent again). The script can send notification using email. Use a second script to run through a list of the services you want to check and run check_service.sh. The below script will check if the file exists and the file is empty or not. Based on the requirement , administrators […] Check if File Exists and Not Empty. This will create a file ‘ttt.txt’ and send it to the mentioned mail id with the subject line ‘Test HTML File’. And if exist then it will display the Size of the file in PowerShell. Linux shell script to check /var logs space and send email if used space reach 80%. I need to create a script on AIX that will periodically check a specific directory for a file. Once you downloaded the working folder with the script file in it, navigate to the containing folder and make the script executable: chmod u+x mail.sh. The script can send notification using email. log2.log marx.txt output.txt test_script.sh $ ls > listing.txt $ more listing.txt. Following is the disk monitor shell script which will execute the perl file for sending alert email. The script is part of a group of scripts we created to do database monitoring. Listing files in /etc/init.d/ probably won’t work, nor will using “service –status-all” because you’ll get a lot of stuff that shouldn’t be running at all times. Useful to find out which folder use most of space under /var. Low disk space on the C drive sometimes may cause you big trouble, you will find your computer run much slower, and you can not install programs on your computer, there might even be a system crash on your computer due to the low space C drive. This simple method redirects the standard output to the file listing.txt. (Cat is the command to view/read the file) Note: In Unix, extension of the file can be anything. This is how the alertmemory.sh script works: first it checks the free memory size, then determines if amount of free memory is less or equal to a specified size (100 MB for the purpose of this guide), used as a bench mark for the least acceptable free memory size.. Comment. Bash Shell scripting – Check if File Exists or Not March 11, 2017 admin Linux 0. Arduino Tutorial for Beginners – LED Matrix With Arduino; Check File Exists: shady4u: Linux - General: 2: 02-21-2010 04:05 AM: Need a script which does Health check for Linux and send mail notification? Use “mutt” command to send email. Also print space usage of each directory inside /var. Something like. Does anyone know how to stop the email to be sent out if the previous quota level is the same as the current one? I tried below suggestion: If the current time is greater than 60 minutes from the modified time on the news.mp3 file then send an email to the Program Director advising that the news did not update, then close script. 2. If the current time is less than 60 minutes from the modified time on the news.mp3 file (means an updated bulletin exists) do nothing then close script. For example, to see if output.dat exist under c:\results. This script really helps system administrator to monitor their servers space usage. I need to create a script task in sql server 2008 R2 to check if a file exists in a directory. 00 01 * * * find script and execute script or if find no result then email. ... Email * Search for: Recent Posts. Hi Guys, Hope someone has tried this before and can be of some assistance. The script will either page or email, depending on the DBA name provided. But any email sending command will not work if no SMTP server is set up properly in the system. But “mutt” is used mainly to read emails on a terminal from local user mailboxes, POP, or IMAP servers. If the file name contains imbedded spaces, it needs to be enclosed in quotes before using the STAT service to check if it exists. Check this script. Use few of below examples to send email. Pretty new to shell script, want to write script which checks if any file .300 extension exists on /exports/files on server 10.xx.xx.xx. 2. We have a few operators that can be used to test various properties associated with a Unix file. I need to compile a BATCH file that I can add to my scheduler. For instance, the following will check to see if a file exists every 3 minutes. Using “mutt” command, you can send an email on a Linux system. How to check if a file exists and above 0 size using Powershell script. i.e. Right now, I have setup a cronjob to run this script hourly. In this example, we set threshold limit at 60% for testing purpose and you can change this limit as per your requirements. 1st the *.bat needs to check if certain files exist in the backup directory, if not it must send me an email alerting me that no backup files has been received. The scripts run every 15 minutes throughout the day. Find Command in Unix Grep Command in Unix SCP Command in unix FTP Command in unix TR Command in Unix If you like this article, Check if a Directory Exists in Shell Script, then please share it or click on the google +1 button. #DSAlert.sh #!/bin/sh In this post we will see how to write a bash shell script to Check if File Exists or Not. You could do the same for the other type of file. There are many open source monitoring tools are currently available in market to monitor Linux systems performance which will send an email alert … the .temp file is deleted when the website is working again. How to Create Script to Check Disk Space and Send Email Alerts for Low Space. Subject: RE: Unix script to check database status Below is a script we are using to monitor over 100 databases on Unix and NT. it's checking against a list of websites and sends email (to list of emails) whenever something wrong (http response different from 200).The script creates a .temp file to "remember" which website(s) failed at last check so you won't get multiple emails. VBScript Function to check if a file exists on the local computer The PowerShell script first checks if the file already exists. Mutt is a text-based email client for Unix-like systems. If *.300 exists, move file to /exports/files/arch and send an email to support@abc.com. Unix doesn’t care about extension. But if the file name also contains single and double quotes, I … If the file listing.txt already exists, it is overwritten! What that list is will be up to you. Premium … This would grep the most recent .CDT file for the string. Now we will see how to check if a file exists and above 0 size using PowerShell script. All the mailer terminal commands are gathered here in a script file. It will send an email when the system reaches the given threshold limit. The shell globbing pattern T*.CDT expands to all matching filenames sorted lexicographically, and since you are using sane filenames (with proper timestamps that sorts properly), the last of these will be the latest file. It will send multiple mails if more than one file systems get reached the given threshold limit because the script is using loop. A simple shell script to find out whether critical services are running or, not under Linux or Unix operating systems. DiskSpace_Alert.pl : Perl script for sending an email. : An email is sent once it hits the 95% threshold; however at the next hour if the level is still at 95%, no email is sent till it hits 96% or more. If *.300 isn't found then do nothing. Assume a variable file holds an existing file name "test" the size of which is 100 bytes and has read, write and execute permission on − It was developed over 20 years ago and it's an important part of Linux history, one of the first clients to support scoring and threading capabilities. Here, the email message is saved in a file named “mail.txt.” The email message already contains the email subject and body. 00 01 * * * sh /backup/script.sh Now I need to add a functionality in cron so that if this script doesn't exist then it generates an alert to me through email using sendmail utility. In some cases, we wants to check whether the directory is exists or not using shell script.If the directory exists, we might remove the existing one or creating the file under the directory.-d operator in bash-d is a operator to test if the given directory is exists or not. I’ve written two functions, one using the FilesystemObject and another using WMI, both of which return a Boolean. 3. listing.txt log1.log log2.log log3.log marx.txt myfile.txt output.txt sample.txt test_script.sh types_of_unix.txt. 7 UNIX if-then-else Examples...with Sample Shell Scripts!!! So, everything is ready for the final test. Step 2: Create a script file as below and save it with a name. It’s very easy to check if a file exists in VBScript, but to make this common task even easier it’s best to use a quick function to do the job. In a REXX procedure I need to check if a Unix file exists. Many Linux command is available to send email from the command line or by using a bash script. 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