Resolution. The /etc/services file is used by applications to translate human readable service names into port numbers when connecting to a machine across a network. The file will typically include the service name, port/protocol, any aliases, and comments.

How many lines does the file etc services have?

An ETC. SERVICES data set must be fixed or fixed block with an LRECL between 56 and 256. The /etc/services z/OS UNIX file can have a maximum line length of 256.

How do I add a port to ETC services in Linux?

Setting the Service Name and Port Number – UNIX

1. Log in as superuser, then display the /etc/services file.
2. Viewing the existing port numbers, select any number between 1024 and 16000 that is not listed in the file.