construct argument lists and invoke utility
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-I replstr
Insert mode: utility is executed for each line from standard input, taking the entire line as a
single argument, inserting it in arguments for each occurrence of replstr. A maximum of five
arguments in arguments can each contain one or more instances of replstr. Any <blank>s at the
beginning of each line shall be ignored. Constructed arguments cannot grow larger than 255 bytes.
Option -x shall be forced on.
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-n number
Invoke utility using as many standard input arguments as possible, up to number (a positive
decimal integer) arguments maximum. Fewer arguments shall be used if:
* The command line length accumulated exceeds the size specified by the -s option (or {LINE_MAX}
if there is no -s option).
* The last iteration has fewer than number, but not zero, operands remaining.
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-p Prompt mode: the user is asked whether to execute utility at each invocation. Trace mode ( -t) is
turned on to write the command instance to be executed, followed by a prompt to standard error. An
affirmative response read from /dev/tty shall execute the command; otherwise, that particular
invocation of utility shall be skipped.
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-t Enable trace mode. Each generated command line shall be written to standard error just prior to
invocation.
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