06-13-2002
If it has to work all the time, it's impossible. There is no hope with something like:
cat /tmp/myscript | ksh
There is also no hope when sourcing the file.
$0 should work in most other cases, in fact, I can't think of another case where it fails. If $0 is a relative path, you may want to tranform it into a absolute path.
It is low-tech, but you could put a line:
MYPATH=/tmp/myscript
in the script. If the script is running as root, the script can invoke fuser on MYPATH and verify that the current process at least has the file open.
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LEARN ABOUT OPENSOLARIS
pathconv
pathconv(1F) FMLI Commands pathconv(1F)
NAME
pathconv - search FMLI criteria for filename
SYNOPSIS
pathconv [-f] [-v alias]
pathconv [-t] [-l] [-nnum] [-v string]
DESCRIPTION
The pathconv function converts an alias to its pathname. By default, it takes the alias as a string from the standard input.
OPTIONS
-f If -f is specified, the full path will be returned (this is the default).
-t If -t is specified, pathconv will truncate a pathname specified in string in a format suitable for display as a frame title.
This format is a shortened version of the full pathname, created by deleting components of the path from the middle of the
string until it is under DISPLAYW -- 6 characters in length, and then inserting ellipses ( ... ) between the remaining pieces.
Ellipses are also used to show truncation at the ends of the strings if necessary, unless the -l option is given.
-l If -l is specified, < and > will be used instead of ellipses ( ... ) to indicate truncation at the ends of the string generated
by the -t option. Using -l allows display of the longest possible string while still notifying users it has been truncated.
-nnum If -n is specified, num is the maximum length of the string (in characters) generated by the -t option. The argument num can be
any integer from 1 to 255.
-valias |string If the -v option is used, then alias or string can be specified when pathconv is called. The argument alias must be an
alias defined in the alias_file named when fmli was invoked. The argument string can only be used with the -t option and must be
a pathname.
EXAMPLES
Example 1 A sample that uses pathconv to construct the menu title. It searches for MYPATH in the alias_file named when fmli command.
Here is a menu descriptor that uses pathconv to construct the menu title. It searches for MYPATH in the alias_file named when fmli was
invoked:
menu=`pathconv -v MYPATH/ls`
.
.
.
where there is a line in alias_file that defines MYPATH . For example, MYPATH=$HOME/bin:/usr/bin.
Here is a menu descriptor that takes alias from the standard input.
menu=`echo MYPATH/ls | pathconv`
.
.
.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
fmli(1), attributes(5)
SunOS 5.11 5 Jul 1990 pathconv(1F)