To merge Apache, Lighttpd, or Nginx server log files, you can use the cat command in Unix or Linux.
Here is the basic syntax for using the cat command to merge log files:
cat logfile1 logfile2 logfile3 > merged.log
The cat command will concatenate the specified log files and write the output to a new file called merged.log.
For example, to merge three Apache log files called access.log, access.log.1, and access.log.2, you can use the following command:
cat access.log access.log.1 access.log.2 > merged.log
This will create a new file called merged.log that contains the contents of all three log files.
You can use the cat command to merge any type of text files, not just log files.