HP NonStop G-Series - Manual (Page 48)

$ . ./.profile
Displaying the Values of Variables
You can display the value of any variable currently set in your shell. To display the value of a
single variable, use the echo command in the following general format:
echo $variable
The variable entry specifies the variable whose value you want displayed. For example, to
display the value of the SHELL environment variable, enter:
$ echo $SHELL
/bin/sh
To display the value of all currently set variables, use the set command without any options. The
following example lists the currently set values in the shell (your output may vary):
$ set
EDITOR=vi
HOME=/users/chang
LOGNAME=chang
PATH=:/bin:/bin/X11
PS1=$
SHELL=/bin/sh
TERM=xterm
Clearing the Values of Variables
You can remove the value of (clear) any current variable. The following variables, however, cannot
be cleared:
•
PATH
•
PS1
•
PS2
•
IFS
You clear currently set variables with the unset command. The general format for the unset
command is the following:
unset name
The name entry specifies the name of the variable to be cleared. For example, suppose you have
created a variable called place and have assigned it a value of U. S. A. To clear the variable,
enter the following:
$ unset $place
Example .profile File
The following features are commonly set in .profile:
•
Terminal characteristics
•
Search path and other environment variables
•
Shell variables
•
Maximum permissions for new files with umask
48 The OSS Shell