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1.1 ! root 1: .\" Copyright (c) 1990 The Regents of the University of California. ! 2: .\" All rights reserved. ! 3: .\" ! 4: .\" This code is derived from software contributed to Berkeley by ! 5: .\" John B. Roll Jr. ! 6: .\" ! 7: .\" Redistribution and use in source and binary forms are permitted ! 8: .\" provided that the above copyright notice and this paragraph are ! 9: .\" duplicated in all such forms and that any documentation, ! 10: .\" advertising materials, and other materials related to such ! 11: .\" distribution and use acknowledge that the software was developed ! 12: .\" by the University of California, Berkeley. The name of the ! 13: .\" University may not be used to endorse or promote products derived ! 14: .\" from this software without specific prior written permission. ! 15: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR ! 16: .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED ! 17: .\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ! 18: .\" ! 19: .\" @(#)xargs.1 5.1 (Berkeley) 4/17/90 ! 20: .\" ! 21: .TH XARGS 1 "April 17, 1990" ! 22: .UC 7 ! 23: .SH NAME ! 24: xargs \- construct argument list(s) and execute utility. ! 25: .SH SYNOPSIS ! 26: .ft B ! 27: xargs [\-t] [\-n number] [\-s size] [utility [argument ...]] ! 28: .ft R ! 29: .SH DESCRIPTION ! 30: The ! 31: .I xargs utility ! 32: reads space, tab, and newline delimited arguments from the standard ! 33: input and executes the specified ! 34: .I utility ! 35: with them as arguments. ! 36: Any arguments specified on the command line are given to the ! 37: .I utility ! 38: upon each invocation, followed by some number of the arguments read ! 39: from standard input. ! 40: The ! 41: .I utility ! 42: is repeatedly executed until standard input is exhausted. ! 43: .PP ! 44: Spaces and tabs may be embedded in arguments using single (`` ' '') or ! 45: double (``"'') quotes or backslashes (``\e''). ! 46: Single or double quotes escape all characters to the next matching quote ! 47: character, backslashes escape the next character. ! 48: Newlines may not be escaped. ! 49: .PP ! 50: The following options are available: ! 51: .TP ! 52: -n number ! 53: Set the maximum number of arguments used from standard input for ! 54: each invocation of the utility. ! 55: An invocation of ! 56: .I utility ! 57: will use less than ! 58: .I number ! 59: standard input arguments if the number of bytes accumulated (see the ! 60: .I \-s ! 61: option) exceeds the specified size or the last invocation of ! 62: .I utility ! 63: has fewer than ! 64: .I number ! 65: arguments remaining. ! 66: The default value for ! 67: .I number ! 68: is 255. ! 69: .TP ! 70: -s size ! 71: Set the maximum number of bytes to which the last component of the ! 72: .I utility ! 73: name, the command-line arguments, and the arguments read in from ! 74: standard input may sum. ! 75: The default value for ! 76: .I size ! 77: is 2048. ! 78: .TP ! 79: -t ! 80: Echo the command to be executed to standard error immediately before it ! 81: is executed. ! 82: .PP ! 83: If no ! 84: .I utility ! 85: is specified, ! 86: .IR echo (1) ! 87: is used. ! 88: .PP ! 89: .I Utility ! 90: should never read from the standard input. ! 91: .PP ! 92: .I Xargs ! 93: exits with 0 if no error occurred, and 1 otherwise. ! 94: .SH "SEE ALSO" ! 95: echo(1) ! 96: .SH STANDARDS ! 97: The ! 98: .I xargs ! 99: utility is expected to be POSIX 1003.2 compliant.
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