xargs - construct argument list(s) and execute utility.
xargs [-ft0] [[-x] -n number] [-s size] [utility [argument ...]]
The xargs utility reads space, tab, newline and end-of-file delimited
arguments from the standard input and executes the specified utility with
them as arguments.
The utility and any arguments specified on the command line are given to
the utility upon each invocation, followed by some number of the
arguments read from standard input. The utility is repeatedly executed
until standard input is exhausted.
Spaces, tabs and newlines may be embedded in arguments using single (`` '
'') or double (``"'') quotes or backslashes (``\''). Single quotes
escape all non-single quote characters, excluding newlines, up to the
matching single quote. Double quotes escape all non-double quote
characters, excluding newlines, up to the matching double quote. Any
single character, including newlines, may be escaped by a backslash.
The options are as follows:
-f Force xargs to ignore the exit status returned by utility. By
default, xargs will exit immediately if utility exits with a non-
zero exit status. This does not include ignoring utility exiting
due to a signal or without calling exit(2).
Set the maximum number of arguments taken from standard input for
each invocation of the utility. An invocation of utility will use
less than number standard input arguments if the number of bytes
accumulated (see the -s option) exceeds the specified size or there
are fewer than number arguments remaining for the last invocation of
utility. The current default value for number is 5000.
Set the maximum number of bytes for the command line length provided
to utility. The sum of the length of the utility name and the
arguments passed to utility (including NULL terminators) will be
less than or equal to this number. The current default value for
size is ARG_MAX - 2048.
-t Echo the command to be executed to standard error immediately before
it is executed.
-x Force xargs to terminate immediately if a command line containing
number arguments will not fit in the specified (or default) command
-0 Read null-byte terminated pathnames from standard input as may have
been produced by the -print0 option of find(1). This is a Minix
specific extension to xargs.
If no utility is specified, echo(1) is used.
Undefined behavior may occur if utility reads from the standard input.
Xargs exits with an exit status of 0 if no error occurs. If utility
cannot be invoked, is terminated by a signal or terminates without
calling exit(2), xargs exits with an exit status of 127. If utility
exits with an exit status other than 0, xargs exits with that exit
status. Otherwise, xargs exits with an exit status of 1.
The xargs utility is expected to be POSIX 1003.2 compliant.