ipcopen3

IPC::Open3 and determining if child is waiting for input

由 孤人 提交于 2020-01-01 16:05:04
问题 sub run_command { my $COMMAND = shift; my @OUTPUT; my %CMD = {}; $CMD{pid} = open3(my $CH_IN, my $CH_OUT, my $CH_ERR, $COMMAND); $CMD{_STDIN} = $CH_IN; $CMD{_STDOUT} = $CH_OUT; $CMD{_STDERR} = $CH_ERR; my $line = readline $CMD{_STDOUT}; print $line; # open my $CMDPROC, q{-|}, $COMMAND or return; # foreach (<$CMDPROC>) # { # push @OUTPUT, "$ARG"; # } close $CMDPROC or return; return @OUTPUT } The above code is part of a script I am writing which needs to run another script (called child). The

IPC::Open3 and determining if child is waiting for input

由 做~自己de王妃 提交于 2020-01-01 16:04:39
问题 sub run_command { my $COMMAND = shift; my @OUTPUT; my %CMD = {}; $CMD{pid} = open3(my $CH_IN, my $CH_OUT, my $CH_ERR, $COMMAND); $CMD{_STDIN} = $CH_IN; $CMD{_STDOUT} = $CH_OUT; $CMD{_STDERR} = $CH_ERR; my $line = readline $CMD{_STDOUT}; print $line; # open my $CMDPROC, q{-|}, $COMMAND or return; # foreach (<$CMDPROC>) # { # push @OUTPUT, "$ARG"; # } close $CMDPROC or return; return @OUTPUT } The above code is part of a script I am writing which needs to run another script (called child). The

Perl select returning undef on sysread when using Windows, IPC::Open3, and IO::Socket->socketpair()

由 [亡魂溺海] 提交于 2019-12-23 02:50:52
问题 I found this example (posted by @ikegami) of a way to use IPC::Open3 on windows using sockets. The problem is that, when I run it, I get an error An existing connection was forcibly closed by the remote host on the sysread . The command runs, the select works correctly, but the sysread is getting an undef instead of the expected 0 for end of file. This behavior is not the same for all commands. If I change the command to echo Hello World! it does not cause the error. Any idea what is going on

perl / embperl — IPC::Open3

由 穿精又带淫゛_ 提交于 2019-12-12 18:50:29
问题 I have a sample program in 2 formats perl & embperl The perl version works as a CGI but the embperl version does not work. Any suggestions or pointers to solutions would be appreciated OS: Linux version 2.6.35.6-48.fc14.i686.PAE (...) (gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) ) #1 SMP Fri Oct 22 15:27:53 UTC 2010 NOTE: I originally posted this question to perlmonks [x] and the embperl mailing list [x] but didn't get a solution. perl working script #!/usr/bin/perl use warnings; use

embperl - Using IPC::Open3 to call wkhtmltopdf. STDIN Not working

由 做~自己de王妃 提交于 2019-12-11 19:06:53
问题 From within embperl, I am trying to call wkhtmltopdf with the IPC::Open3 module. I get output (thanks to ikegami ) from wkhtmltopdf but no input is going to wkhtmltopdf. This is related to this question: perl / embperl — IPC::Open3 Here is the code: [- use warnings; use strict; use IPC::Open3; use POSIX; use Symbol; my $cmd = '/usr/local/bin/wkhtmltopdf - -'; my $pdf = ''; my $string = '<!DOCTYPE html> <html> <head> <title>Hello World</title> </head> <body> Hello World!!! </body> </html>'; my

IPC::Open3 and determining if child is waiting for input

由 十年热恋 提交于 2019-12-04 13:39:01
sub run_command { my $COMMAND = shift; my @OUTPUT; my %CMD = {}; $CMD{pid} = open3(my $CH_IN, my $CH_OUT, my $CH_ERR, $COMMAND); $CMD{_STDIN} = $CH_IN; $CMD{_STDOUT} = $CH_OUT; $CMD{_STDERR} = $CH_ERR; my $line = readline $CMD{_STDOUT}; print $line; # open my $CMDPROC, q{-|}, $COMMAND or return; # foreach (<$CMDPROC>) # { # push @OUTPUT, "$ARG"; # } close $CMDPROC or return; return @OUTPUT } The above code is part of a script I am writing which needs to run another script (called child). The child may or may not prompt for input, depending on the presence of a cookie file in /var/tmp (both
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