04-09-2010
check file is a proper flv
Hello,
On a linux server (centos 5.4), users upload file that should be flv. How can I check that the file is a real and proper flv file? Checking the extension is not enough!
Thanks
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LEARN ABOUT DEBIAN
grid-mapfile-check-consistency
GRID-MAPFILE-CHECK(8) Globus Commands GRID-MAPFILE-CHECK(8)
NAME
grid-mapfile-check-consistency - Add an entry to a grid map file
SYNOPSIS
grid-mapfile-check-consistency [-h] [-help] [-usage] [-version]
grid-mapfile-check-consistency [-mapfile MAPFILE] | [-f MAPFILE]
DESCRIPTION
The grid-mapfile-check-consistency program performs basic checks for validity of a gridmap file. These checks include checks for existence,
duplication of entries, and valid local user names. If the gridmap file is valid, grid-mapfile-check-consistency exits with a zero exit
code, otherwise it exits with a non-zero exit code. In either case, it displays information about its progress as it parses and validates
the gridmap file.
By default, grid-mapfile-check-consistency will check the gridmap file named by the GRIDMAP environment variable if present. If that
variable is not set, it will check the file $HOME/.gridmap for non-root users if present. If that doesn't exist or
grid-mapfile-check-consistency is run as root, it will then check /etc/grid-security/grid-mapfile. This can be changed by the use of the
-mapfile or -f command-line options.
The full set of command-line options to grid-mapfile-check-consistency are:
-help, -h, -usage
Display the command-line options to grid-mapfile-check-consistency.
-version
Display the version number of the grid-mapfile-check-consistency command.
-mapfile MAPFILE, -f MAPFILE
Check the gridmap file named by MAPFILE instead of the default.
EXAMPLES
Check that the gridmap file in /etc/grid-security is valid:
% grid-mapfile-check-consistency -f /etc/grid-security/grid-mapfile
Checking /etc/grid-security/grid-mapfile
Verifying grid mapfile existence...OK
Checking for duplicate entries...OK
Checking for valid user names...OK
Check a gridmap file that has an invalid local user name:
% grid-mapfile-check-consistency -f /etc/grid-security/grid-mapfile
Checking /etc/grid-security/grid-mapfile
Verifying grid mapfile existence...OK
Checking for duplicate entries...OK
ERROR: baduser is not a valid local username
ERROR: Found 1 invalid username(s)
ENVIRONMENT VARIABLES
The following environment variables affect the execution of grid-mapfile-check-consistency:
GRIDMAP
Path to the default gridmap to check.
FILES
The following files affect the execution of grid-mapfile-check-consistency:
$HOME/.gridmap
Path to the default gridmap to check if the GRIDMAP environment variable is not set for non-root users.
/etc/grid-security/grid-mapfile
Path to the default gridmap to check if GRIDMAP environment variable is not set and the above file does not exist.
SEE ALSO
grid-mapfile-add-entry(8), grid-mapfile-delete-entry(8)
AUTHOR
University of Chicago
Globus Toolkit 5.0.1 03/19/2010 GRID-MAPFILE-CHECK(8)