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Top Forums Shell Programming and Scripting Newbie bash scripting help requested Post 302419946 by Scott on Monday 10th of May 2010 07:26:54 AM
Old 05-10-2010
A function returns the result (a number) of the last command executed in it (unless you tell it otherwise):

Code:
# cat some_script
function some_function {
 grep x some_file
}

some_function
echo $?

touch some_file
some_function
echo $?

echo x > some_file
some_function
echo $?

# ./some_script
grep: some_file: No such file or directory
2
1
x
0

If you want it to return exactly 0 or 1, then you should code your function to do this, although a non-zero result is generally taken to mean failure.

(to your first statement, change "or does it mean" to "and does it mean", and the answer would be "yes" to both)
 

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XATTR_LIST(3)								 1							     XATTR_LIST(3)

xattr_list - Get a list of extended attributes

SYNOPSIS
array xattr_list (string $filename, [int $flags]) DESCRIPTION
This functions gets a list of names of extended attributes of a file. Extended attributes have two different namespaces: user and root. The user namespace is available to all users, while the root namespace is available only to users with root privileges. xattr operates on the user namespace by default, but this can be changed with the $flags parameter. PARAMETERS
o $filename - The path of the file. o $flags - Supported xattr flags +-----------------+---------------------------------------------------+ | | | |XATTR_DONTFOLLOW | | | | | | | Do not follow the symbolic link but operate on | | | symbolic link itself. | | | | | | | | XATTR_ROOT | | | | | | | Set attribute in root (trusted) namespace. | | | Requires root privileges. | | | | +-----------------+---------------------------------------------------+ RETURN VALUES
This function returns an array with names of extended attributes. EXAMPLES
Example #1 Prints names of all extended attributes of file <?php $file = 'some_file'; $root_attributes = xattr_list($file, XATTR_ROOT); $user_attributes = xattr_list($file); echo "Root attributes: "; foreach ($root_attributes as $attr_name) { printf("%s ", $attr_name); } echo " User attributes: "; foreach ($attributes as $attr_name) { printf("%s ", $attr_name); } ?> SEE ALSO
xattr_get(3). PHP Documentation Group XATTR_LIST(3)
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