is_existing
Package: WA2L/edrc 1.5.57
Section: Library Commands (3)
Updated: 04 November 2020
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NAME
is_existing - test if a file or directory is existing
SYNOPSIS
edrc/lib/is_existing
[
-h
]
is_existing
file
[
timeout
]
AVAILABILITY
WA2L/edrc
DESCRIPTION
check if a
file/directory/link
etc. is existing and accessible
by the calling user.
This command does not hang if for instance
the NFS resource where the
file/directory/link
is located is not available.
There is the possibility to specify a timeout
value when the default of 0 second is not sufficient.
OPTIONS
- -h
-
print usage message.
- file
-
file/directory/link to check if it exists.
- timeout
-
timeout in seconds.
This allows to check if a resource is existing that needs
some time to get available (as an automounted NFS directory).
the default timeout is
0
seconds.
ENVIRONMENT
-
EXIT STATUS
- 0
-
element exists.
True
is returned to
stdout.
- 1
-
element is not existing or is not accessible within the
given
timeout.
False
is returned to
stdout.
- 4
-
usage message printed.
FILES
-
EXAMPLES
-
SEE ALSO
edrcintro(1),
is_writeable(3),
test(1)
NOTES
-
BUGS
-
AUTHOR
is_existing was developed by Christian Walther. Send suggestions
and bug reports to wa2l@users.sourceforge.net .
COPYRIGHT
Copyright © 2020
Christian Walther
This is free software; see
edrc/doc/COPYING
for copying conditions. There is ABSOLUTELY NO WARRANTY; not
even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
This document was created by man2html
using the manual pages.
Time: 16:53:16 GMT, August 28, 2024