#A LOG FILE MONITOR INSTALL#

To overwrite the default configuration file, we’re using the -c option. $ swatchdog -c ~/swatch/nf -t ~/swatch/dummy.log *** swatchdog version 3.2.4 (pid:21064) started at 2020. Execute the following command and adjust the location of your log file.Now that our configuration is ready, let’s check out how it works. exec can execute a specified command or a script when the given pattern is found.mail is used to send an email to the specified recipient.You can also configure different email subjects and recipients. Note that you can provide multiple search patterns here. Watchfor /Finished/ echo green exec echo 'execute some script here.' mail=user, subject='Script done' To provide a different configuration, let’s create a nf file in a new directory called swatch:.Swatchdog watches the /var/log/syslog file by default, so we’ll have to modify this setting if we want to monitor our custom log instead. You can specify a different color for various kinds of messages. When it finds the pattern, it will highlight the text in the terminal in green. You could also use regular expressions for more flexibility. We’re telling swatchdog to look for Finished as a fixed string. Watchfor /Finished/ echo green mail=user, subject='Pattern found' Suppose that you want to get notified when the word Finished is found in the program’s log: Swatchdog requires a configuration file called.

#A LOG FILE MONITOR INSTALL#

$ sudo yum install epel-release & sudo yum install swatch Here is where swatchdog comes in handy - it’s much simpler to use.Īlso, this tool can be useful if you want to get notified when an error message occurs in your application. Instead of checking its log file manually, you might implement your own solution by creating a custom script to monitor the file. Suppose that you are running a third-party application that doesn’t send an email when its process has finished. It requires a configuration file with patterns to search for. Swatchdog stands for “simple watch dog.” As its name implies, it is used for monitoring system activities.

A log file monitor