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The following files are used in machine-specific configuration and system administration databases.
The /etc/boot file is a backup copy of the hard disk bootstrap. See the discussion of the -b option of disksetup(1M).
The /etc/cshrc file contains startup commands to be run by csh(1). This file is conceptually the same for csh users as /etc/profile is for sh(1) and ksh(1) users.
This file describes how to parse dates to the obsolescent getdate(3C) routine.
This optional file contains a list of programs requiring dial-up passwords when run from login(1). This file will be present if the system administrator has created it as a means of requiring an additional password when users attempt to login from the devices found in /etc/dialups.
Each line in the file has the following syntax:
program:encrypted_password:where program is the full path to a program requiring a dial-up password. encrypted_password is the password that will be used by program. The user must enter this password in order to get the login prompt. It is used in conjunction with the file /etc/dialups. (See ``Setting passwords for dial-in lines'' for more information on creating dial-up passwords.)
This file is the device table. It lists the device alias, path to the vnode, and special attributes of every device connected to the computer.
This file lists the device search path used by devnm(1M).
This file is created at run time and lists the reserved (locked) devices. Device reservations do not survive system reboots.
This file specifies the Network Filesystem® (NFS®) resources from your machine that are automatically shared to remote machines when entering networking mode (system state 3). Each entry in this file must be a share(1M) command.
This file lists the group or groups to which a device belongs.
This file contains a list of terminal devices that cannot be accessed without a dial-up password. This file is present if the system administrator has created it as a means of requiring an additional password when users attempt to log in from the devices listed in it. It is used in conjunction with the file /etc/d_passwd. (See ``Setting passwords for dial-in lines'' for more information on creating dial-up passwords.)
This file contains the Intel 80387 Floating Point Emulator.
This file describes each user group to the system. An entry is added for each new group created with the groupadd(1M) command.
This file contains configuration information for the IMAP (Internet Mail Access Protocol) services.
This file contains instructions to be executed by init(1M) command. The instructions define the processes started or stopped for each system state (sometimes referred to as initialization states or run states). By convention, system state 1 (or S or s) is single-user state; system state 2 is multi-user state and system state 3 is networking state. ``Customizing UNIX system startup'' summarizes the various system states and describes their uses. See inittab(4).
This file contains saved console terminal settings used by init(1M).
The /etc/mail/aliases file contains mail alias information for the local machine. See aliases(4) for more information.
This file contains defaults for mailx(1). It may be added by the system administrator. See mailx(1).
This file contains the message presented at each login prompt.
This file gives the pathnames and preferences for the shells used by C library routines such as system(3S) and popen(3S). Each pathname is prefixed with a category indicating the shell variation and a number, where smaller is preferred.
The shell variation is indicated by a single byte, where currently only b (for Bourne) and k (for Korn) are explicitly looked for in the C library. The prefix is separated from the pathname by a colon.
When system() is called, for example, if the value of the environment variable SHELL matches one of the pathnames in /etc/libc_shells, then the preferred shell pathnames with the same variation are used.
This file gives any user direct access to the raw link(2) and unlink(2) system calls, and is needed when the ln(1) command checks are to be bypassed. Use /etc/links with care, especially when you are logged in as root.
This file contains a list of kernel modules to be loaded at system startup. It is typically used for HBAs (Host Bus Adapters).
This file contains a list of file magic numbers recognized by the file(1) command.
The /etc/mailcap file (short for mail capabilities) is used by mailx(1) when a user wants to display MIME message attachments. It maps MIME types to programs that know how to display, print, or edit those MIME types.
This file is the system-wide file extension to MIME-type mapping.
This file contains the list of filesystems that are currently mounted.
This file contains the message of the day. The message of the day is displayed on a user's screen after that user has successfully logged in. (The script that does this is part of the /etc/profile file.) Keep the message of the day short and to the point: Use the /var/news directory and the news(1) command for lengthy messages.
This file is the network configuration database file. It contains information about where to find name-to-address lookup routines for each type of network listed. See netconfig(4bnu) for more information.
This file is a database file mapping RPC network names to UNIX credentials.
This file is used by setuname(1M) to remember the system's network node name across reboots.
This file is a copy of the previous /etc/device.tab file.
This file is a copy of the previous /etc/group file.
This file is a backup copy of /etc/device.tab.
This file is a copy of the previous /etc/shadow file.
This file is a copy of the previous /etc/vfstab file.
This file identifies each user to the system. The useradd(1M) command automatically adds an entry to this file for each new user, userdel(1M) removes an entry, and usermod(1M) modifies an entry.
This file is the configuration file for POP3 mailbox download services.
This file contains the default profile for all users. The standard (default) environment for all users is established by the instructions in the /etc/profile file. The system administrator can change this file to set options for the root login. For example, the six lines of code shown here can be added to /etc/profile. This code defines the erase character, automatically identifies the terminal type, and sets the TERM variable when the login name is root.
if [ ${LOGNAME} = root ]
then
stty echoe
TERM=AT386
export TERM
fi
This file is a temporary file used by ps(1).
This file is the public key database used for secure RPC. See publickey(4bnu) for more information.
This file is the resolver configuration file. The operating system uses it to define the domain the system is in, the domain search order for resolving partially qualified names, and the nameserver(s) to use for name resolution.
This file contains a list of all clients that have remotely mounted a filesystem from host, saved across crashes. See showmount(1Mnfs) for more information.
This file contains a mapping of RPC (Remote Procedure Call) program numbers to human-readable names. See rpc(4tcp) for more information.
This file is a copy of /etc/rpc made before the TED entry is added by desktop installation scripts.
This file contains a configuration script used to customize the environment for the port monitor tagged as pmtag (such as /etc/saf/tcp/_config for the tcp port monitor). Port monitor configuration scripts are optional.
This is the administrative file for the port monitor tagged as pmtag. It contains an entry for each service available through the pmtag port monitor.
This file contains information about all port monitors for which the Service Access Controller (SAC) is responsible.
This file contains a configuration script to customize the environments for all port monitors on the system. This per-system configuration file is optional.
This file is a configuration file for sendmail(1M).
This file is a temporary file used by sendmail(1M) to store its process ID for locking purposes.
This file contains password information for all users. It should not be modified directly, but rather, use passwd(1), useradd(1M), userdel(1M), or usermod(1M), as appropriate.
This file indicates which STREAMS modules should be pushed when a socket is opened with the indicated parameters, for example, a socket opened as address family AF_INET and type SOCK_STREAM will open /dev/tcp and push isocket and sockmod.
This file is used by statd(1Mnfs) and lockd(1Mnfs) to provide crash and recovery functions for the locking services on NFS®.
This file contains the standard template for .profile files. It is copied into home directories for new users.
This file contains a list of swap devices to be automatically added to the system by swap -c at system startup.
This file is a configuration file for syslogd(1M).
This file is a temporary file used by syslogd(1M) to store its process ID for locking purposes.
This file sets and exports the time zone shell variable TZ. To change the TZ The TZ variable can be redefined on a user (login) basis by setting the variable in the associated .profile. The TIMEZONE file is executed by /sbin/rc2. See timezone(4).
This file contains information used by the ttymon port monitor to set the terminal modes and baud rate for a TTY port. See ``The Service Access Facility'' for more information.
This file lists the names of directories in /dev that contain terminal and terminal-related device files. It is used by ttyname(3C) to improve performance.
This file is used to set terminal types automatically at login. It maps serial ports (such as /dev/tty00) to their corresponding terminal type (such as ansi). See tset(1) for more information.
This file provides default values for filesystems and remote resources. The following information can be stored in this file:
#special fsckdev mountp fstype fsckpass automnt mntflags /dev/root /dev/rroot / vxfs 1 no mincache=closesync SYS_RANGE_MAX /dev/dsk/c0b0t0d0s4 /dev/rdsk/c0b0t0d0s4 /home vxfs 1 yes mincache=closesync SYS_RANGE_MAX /dev/dsk/c0b0t0d0sa /dev/rdsk/c0b0t0d0sa /stand bfs 1 no - SYS_RANGE_MAX /dev/dsk/c0b0t0d0sc /dev/rdsk/c0b0t0d0sc /home2 vxfs 1 yes mincache=closesync SYS_RANGE_MAX /proc - /proc proc - no - /processorfs - /system/processor profs - yes - /dev/fd - /dev/fd fdfs - no - /dev/dsk/f0t /dev/rdsk/f0t /install s5 - no - /dev/dsk/f1t /dev/rdsk/f1t /install s5 - no - /dev/dsk/f0 /dev/rdsk/f0 /install s5 - no - /dev/dsk/f1 /dev/rdsk/f1 /install s5 - no - /tmp - /tmp memfs - yes swapmax=10485760,rootmode=1777 /var/tmp - /var/tmp memfs - yes swapmax=31457280,rootmode=1777
Sample /etc/vfstab file
This file is a backup copy of /etc/vfstab, saved when ODM (Online Data Manager) is installed.