read/sysread区别

2024-08-27 05:06:53

 use warnings;

 use strict;

 my $readbuff;

 my $sysreadbuff;

 my $readbyt = read(STDIN, $readbuff, );

 print "read get:$readbuff\n";

 print "read return:$readbyt\n";

 my $sysreadbyt = sysread(STDIN, $sysreadbuff, );

 print "sysread get:$sysreadbuff\n";

 print "sysread return:$sysreadbyt\n";

sysread使用无缓冲

read使用缓冲

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