gfal-xattr - Man Page

show or set attributes of a file


gfal-xattr [ OPTION ]... FILE [ ATTRIBUTE [ = VALUE ]]


gfal-xattr Display attributes of a file or set them to a new value. This command comes in three forms, making it possible, for a specified file,  to list all attribute and corresponding values, display the value of a particular attribute or assign a new value to a particular attribute - see examples.


-h, --help

show help about the command.

-V, --version

output version information and exit.

-v, --verbose

verbose mode. Repeat up to 3 times for the most verbose mode.

-D, --definition DEFINITION

define properties for gfal2. Definitions have the following syntax: "CONFIG_GROUP:KEY=VALUE"

-t, --timeout TIMEOUT

global timeout for the execution of the command. Command is interrupted if time expires before it finishes. Note: A grace period of 30 seconds is given to the global timeout.

-E, --cert CERT

user certificate. (This option takes effect only after X509_USER_PROXY environment variable and default /tmp/x509up_u`id -u` location cannot provide a certificate)

--key KEY

user private key.


forces Gfal2 to use IPv4 addresses only. (Option valid only for GridFTP protocol)


forces Gfal2 to use IPv6 addresses only. (Option valid only for GridFTP protocol)

-C, --client-info CLIENT_INFO

provide custom client-side information.

--log-file LOG_FILE

write Gfal2 library logs to the given file location.


file URI


optional argument, specifying an attribute to get or set. If no attribute is given, all attributes and corresponding values are displayed.


if an attribute is given, a new value can optionally be assigned to it.


Show all attributes and values of a file:

gfal-xattr srm://

Show the value of a particular attribute:

gfal-xattr srm:// user.status

Set a new value to an attribute:

gfal-xattr srm:// user.status=new_value

Typically, you can get the transport urls (turls) with the "user.replicas" attribute:

srm:// user.replicas



All configuration files in this directory affect the behavior of the underlying gfal2.


Duarte Meneses <>
Adrien Devresse <>
Alejandro Alvarez Ayllon <>
Andrea Manzi <>
Mihai Patrascoiu <>
Joao Lopes <>

See Also

gfal-cat(1), gfal-chmod(1), gfal-copy(1), gfal-ls(1), gfal-mkdir(1), gfal-rename(1), gfal-rm(1), gfal-save(1), gfal-stat(1), gfal-sum(1), gfal-token(1), gfal-xattr(1), gfal-evict(1), gfal-bringonline(1), gfal-archivepoll(1)

Referenced By

gfal-archivepoll(1), gfal-bringonline(1), gfal-cat(1), gfal-chmod(1), gfal-copy(1), gfal-evict(1), gfal-ls(1), gfal-mkdir(1), gfal-rename(1), gfal-rm(1), gfal-save(1), gfal-stat(1), gfal-sum(1), gfal-token(1).

March 2022 v1.7.1