envvar standard environment variables	Miscellaneous Information
	SYNOPSIS DESCRIPTION PORTABILITY SEE ALSO

---

SYNOPSIS

export NAME=value

set NAME=value

echo $NAME

---

DESCRIPTION

When a process is executed, it inherits a set of strings called the environment. It is conventional for these strings to have the form:

NAME=value

The export command built into the MKS KornShell can be used to set the variable NAME into the environment of every child process. The set command built into the shell does the same. The echo command prints the value of environment variable NAME inside the MKS KornShell.

Note:

The shell maintains additional shell variables that are not exported to child processes; because these variables are not passed on, they are not environment variables.

The following environment variables are used throughout MKS Toolkit:

COLUMNS

If you set this variable to a numeric value, various commands use its value as the width of the output device in columns. This overrides the default.

ENV

The value of this variable is the name of a file of MKS KornShell commands, or else be null. When the MKS KornShell is invoked, the file named by ENV is executed before the MKS KornShell does anything else. Thus your ENV file may contain definitions of aliases, shell functions, and son on that may be used by shell scripts. Note that your ENV file is executed, whether or not the MKS KornShell is invoked as a login shell. This differs from older releases of the MKS KornShell.

HASHBANG

If this variable is set then the #! feature of the MKS KornShell is enabled.

HOME

This variable is set by the shell's default startup files. It contains the name of your home directory. Your home directory is the default directory for the cd command built into the MKS KornShell.

LINES

If you set this variable to a numeric value, various commands use its value as the number of lines available on the output device. This overrides the default.

LOGNAME

This variable is set by the shell's default startup files. It holds the user name of the current user.

MAILER

For commands that send mail, this variable points at a mail delivery program. If this variable is not set, then the default mailer, mailx is invoked.

PATH

This variable is set to a default value when you start the MKS KornShell. Normally, it is also set in your profile file. It lists the directories that are to be searched to find commands, as described in sh.

SHELL

This variable contains the full path name of the current shell.

TERM

This variable contains the terminal type.

TMPDIR

By default, MKS Toolkit commands store temporary files under /tmp. To use a different directory for temporary files, set TMPDIR to the name of the directory you want to use.

TZ

Commands that print times (and dates) use this variable to determine the time zone. If the TZ variable is left undefined, the operating system's current time zone setting is used. See timezone for details.

---

SEE ALSO

Commands:

cd, env, ls, sh

Miscellaneous:

timezone