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How does unix system administration, unix programming, unix network programming differ?

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Old 06-09-2011
Question How does unix system administration, unix programming, unix network programming differ?

How does unix system administration, unix programming, unix network programming differ?
Please help.

Last edited by vbe; 06-09-2011 at 02:13 PM..
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netid(4)							   File Formats 							  netid(4)

netid - netname database SYNOPSIS
/etc/netid DESCRIPTION
The netid file is a local source of information on mappings between netnames (see secure_rpc(3NSL)) and user ids or hostnames in the local domain. The netid file can be used in conjunction with, or instead of, the network source: NIS or NIS+. The publickey entry in the nss- witch.conf (see nsswitch.conf(4)) file determines which of these sources will be queried by the system to translate netnames to local user ids or hostnames. Each entry in the netid file is a single line of the form: netname uid:gid, gid, gid... or netname 0:hostname The first entry associates a local user id with a netname. The second entry associates a hostname with a netname. The netid file field descriptions are as follows: netname The operating system independent network name for the user or host. netname has one of two formats. The format used to specify a host is of the form: unix.hostname@domain where hostname is the name of the host and domain is the network domain name. The format used to specify a user id is of the form: unix.uid@domain where uid is the numerical id of the user and domain is the network domain name. uid The numerical id of the user (see passwd(4)). When specifying a host name, uid is always zero. group The numerical id of the group the user belongs to (see group(4)). Several groups, separated by commas, may be listed for a single uid. hostname The local hostname (see hosts(4)). Blank lines are ignored. Any part of a line to the right of a `#' symbol is treated as a comment. EXAMPLES
Example 1 A sample netid file. Here is a sample netid file: unix.789@West.Sun.COM 789:30,65 unix.123@Bldg_xy.Sun.COM 123:20,1521 unix.candlestick@campus1.bayarea.EDU 0:candlestick FILES
/etc/group groups file /etc/hosts hosts database /etc/netid netname database /etc/passwd password file /etc/publickey public key database SEE ALSO
netname2user(3NSL), secure_rpc(3NSL), group(4), hosts(4), nsswitch.conf(4), passwd(4), publickey(4) SunOS 5.11 23 May 1994 netid(4)

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