Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #63
Difficulty: Easy
Blackberry was the first company to use the Emoji for mobile devices.
True or False?
Linux & Unix Commands - Search Man Pages

services(5) [freebsd man page]

SERVICES(5)						      BSD File Formats Manual						       SERVICES(5)

NAME
services -- service name data base DESCRIPTION
The services file contains information regarding the known services available in the Internet. For each service a single line should be present with the following information: official service name port number protocol name aliases Items are separated by any number of blanks and/or tab characters. The port number and protocol name are considered a single item; a ``/'' is used to separate the port and protocol (e.g. ``512/tcp''). A ``#'' indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by the routines which search the file. Service names may contain any printable character other than a field delimiter, newline, or comment character. If ``db'' is specified as source in the nsswitch.conf(5), /var/db/services.db is searched. The database in /var/db/services.db needs to be updated with services_mkdb(8) after changes to the services file have been applied. NIS INTERACTION
Access to the NIS services.byname map can be enabled by adding a single ``+'' on a line by itself in the /etc/services file. This causes the contents of the NIS services map to be inserted at the location where the ``+'' appears. FILES
/etc/services The services file resides in /etc. SEE ALSO
getservent(3), nsswitch.conf(5), services_mkdb(8) HISTORY
The services file format appeared in 4.2BSD. BUGS
A name server should be used instead of a static file. BSD
April 4, 2010 BSD

Check Out this Related Man Page

services(4)							   File Formats 						       services(4)

NAME
services - Internet services and aliases SYNOPSIS
/etc/inet/services /etc/services DESCRIPTION
The services file is a local source of information regarding each service available through the Internet. The services file can be used in conjunction with or instead of other services sources, including the NIS maps "services.byname" and the NIS+ table "services." Programs use the getservbyname(3SOCKET) routines to access this information. The services file contains an entry for each service. Each entry has the form: service-name port/protocol aliases service-name This is the official Internet service name. port/protocol This field is composed of the port number and protocol through which the service is provided, for instance, 512/tcp. aliases This is a list of alternate names by which the service might be requested. Fields can be separated by any number of SPACE and/or TAB characters. A number sign (#) indicates the beginning of a comment; any charac- ters that follow the comment character up to the end of the line are not interpreted by routines which search the file. Service names may contain any printable character other than a field delimiter, a NEWLINE, or a comment character. Any changes to a port assignment do not affect the actual port registration of the service. FILES
/etc/nsswitch.conf configuration file for name-service switch SEE ALSO
getservbyname(3SOCKET), inetd.conf(4), nsswitch.conf(4) NOTES
/etc/inet/services is the official SVR4 name of the services file. The symbolic link /etc/services exists for BSD compatibility. SunOS 5.11 12 Oct 2000 services(4)

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

ports and services

hello all, in order for me to close ports and remove services that could be a danger to my system i have edited the /etc/initd.conf file, /etc/system file, and renamed some of the r commands. However i wanted to know if anyone knows how to turn off all services and close ALL known ports, so i... (3 Replies)
Discussion started by: Holistic
3 Replies

2. UNIX for Advanced & Expert Users

NFS services

What are all the services/daemons we use in NFS configuration? I know that nfs,portmap,nfslock the the services we use.But I am not sure that which service wil do what job? Is there any other services running for NFS? What services are running on server side and what services are running in... (4 Replies)
Discussion started by: praveen_b744
4 Replies

3. Solaris

SNMP services

Hello, Can anyone help me by telling how to open port 161 in solaris 10? I have added it in /etc/services but it is not working. I checked by telneting but I could not connect to that server on the port 161. I am trying to communicate using snmp services. (6 Replies)
Discussion started by: rcmrulzz
6 Replies

4. Shell Programming and Scripting

adding a character in front of a line

Hi everyon, I am trying to search for a pattern in a file and add "//" to the begining of the file. lets say i want to comment out a line from my codes. the line that should be commented out contains the word "reset". i need to search for the word "reset" and comment out that specific line. is... (5 Replies)
Discussion started by: ROOZ
5 Replies

5. Shell Programming and Scripting

grep'ing a file until a certain message appears

Hello, I'm writing a script that will automate the launch of some services on my AIX machine. However, some services are dependent on the successful startup of others. When I start these services manually, I usually just check a log file until I see a message that confirms a successful... (3 Replies)
Discussion started by: pallak7
3 Replies

6. SuSE

Which command can be used to show running services?

Hi Dear Guys: I want to get a list of running services. Is there any command having this functionality? (3 Replies)
Discussion started by: crest.boy
3 Replies

7. UNIX for Dummies Questions & Answers

How to remove services from nsswitch file?

According to security manual only DNS, files, or LDAP should be allowed in nsswitch file however it seems like i have many other services configured in nsswitch files. below are the content from nsswitch file. What services can be removed considering the system stability. passwd: files... (6 Replies)
Discussion started by: pinga123
6 Replies

8. UNIX for Advanced & Expert Users

detecting the running services

I did search on the subject on services in linux and they do explain how to find what are the services that loaded when the linux boot. however I have not find how to detect what services run right now. I would like to now that and how to kill services. Thanks. (3 Replies)
Discussion started by: programAngel
3 Replies

9. AIX

Help with /etc/services

Hi In my AIX 5.3 box I already have the below entry: #cat /etc/services | grep -i 3602 infiniswitchcl 3602/tcp # InfiniSwitch Mgr Client infiniswitchcl 3602/udp # InfiniSwitch Mgr Client Now I got an requirement to add the below entry in the same port... (6 Replies)
Discussion started by: samsungsamsung
6 Replies

10. UNIX for Advanced & Expert Users

Opinion on auto-restart of failed apps/services

I'm becoming a dying breed where I work. More and more sys admins are advocating automatically restarting failed services such as tomcat, jboss, etc. I've always been against doing this except with buggy apps that can't be fixed or avoided. My main argument is that I feel it's a trick used by... (9 Replies)
Discussion started by: mglenney
9 Replies

11. Red Hat

services not working

Hi Friends... When start any services ..it is showing unrecognized services,I check all the services and ports ,every thing is good can help out in this case. (4 Replies)
Discussion started by: Rajesh_Apple
4 Replies

12. Red Hat

Restart of services if port no is changed in /etc/services in RHEL

I had a doubt if any services need to be restarted if port no in /etc/services in an RHEL setup is changed. For eg, the port no of 443 for SSL may need to be changed. I hope my query is clear whether any services need to be restarted if port no in /etc/services is changed. Please revert with... (10 Replies)
Discussion started by: RHCE
10 Replies

13. Red Hat

Enabling services.

Hi, I would like to know wheather it is possible to enable same services on another Linux Box, which are enabled on First Linux Server. Example. Server A having some services enabled, I want same kind of services enabled on Server B using single command / using chkconfig command, instead... (4 Replies)
Discussion started by: manoj.solaris
4 Replies

14. HP-UX

HPUX 11.23 - server is crawling

OK HPUX masters I need help. I have a HPUX 11.23 server that I am using as a Ignite server that services two HPUX services for backups only. The other day I noticed that our Make Net Recoveries were failing. Upon attempting to login to the server SSH and could not I then tried to ping and could... (6 Replies)
Discussion started by: waytec
6 Replies

15. Linux

Application services not starting with server reboot

Hi All, My application uses three different sub-services to make complete application up and running to normal. The entry of all the three services are present in /etc/init.d directory with proper softlink created to application home path where it actually exists. In one rare case one of the... (3 Replies)
Discussion started by: hk_kamozalwar
3 Replies

Featured Tech Videos