in reply to Re^3: Cpan install gets stuck installing Net OpenSSH ?
in thread Cpan install gets stuck installing Net OpenSSH ?

Still seems to get stuck, and no error so far. Its been running for ~45 minutes now and no progress. 
-bash-3.2$ sudo cpan
Password: 
Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.9402)
Enter 'h' for help.

cpan[1]> look Net::OpenSSH
CPAN: Storable loaded ok (v2.20)
Going to read '/usr/local/home/myuser/.cpan/Metadata'
  Database was generated on Fri, 11 Mar 2016 19:17:02 GMT
Running look for module 'Net::OpenSSH'

Trying to open a subshell in the build directory...
CPAN: Data::Dumper loaded ok (v2.124)
'YAML' not installed, falling back to Data::Dumper and Storable to rea
+d prefs '/usr/local/home/myuser/.cpan/prefs'
CPAN: Digest::SHA loaded ok (v5.47)
CPAN: Compress::Zlib loaded ok (v2.02)
Checksum for /usr/local/home/myuser/.cpan/sources/authors/id/S/SA/SALV
+A/Net-OpenSSH-0.70.tar.gz ok
Scanning cache /usr/local/home/myuser/.cpan/build for sizes
......................................................................
+......DONE
CPAN: Archive::Tar loaded ok (v1.52)
Net-OpenSSH-0.70/
Net-OpenSSH-0.70/sample/
Net-OpenSSH-0.70/sample/mod_perl_openssh.pm
Net-OpenSSH-0.70/sample/login_handler.pl
Net-OpenSSH-0.70/sample/autosudo.pl
Net-OpenSSH-0.70/sample/git_ssh_through_mux.pl
Net-OpenSSH-0.70/sample/change_passwd.pl
Net-OpenSSH-0.70/sample/git_with_password.pl
Net-OpenSSH-0.70/sample/net-telnet.pl
Net-OpenSSH-0.70/sample/expect.pl
Net-OpenSSH-0.70/sample/password_from_data.pl
Net-OpenSSH-0.70/sample/sshfs_mount.pl
Net-OpenSSH-0.70/sample/keep_in_sync.pl
Net-OpenSSH-0.70/Changes
Net-OpenSSH-0.70/lib/
Net-OpenSSH-0.70/lib/Net/
Net-OpenSSH-0.70/lib/Net/OpenSSH/
Net-OpenSSH-0.70/lib/Net/OpenSSH/ShellQuoter/
Net-OpenSSH-0.70/lib/Net/OpenSSH/ShellQuoter/MSCmd.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ShellQuoter/fish.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ShellQuoter/POSIX.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ShellQuoter/Chain.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ShellQuoter/csh.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ShellQuoter/MSWin.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ObjectRemote.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/Constants.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ShellQuoter.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ModuleLoader.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/OSTracer.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/ConnectionCache.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH/SSH.pm
Net-OpenSSH-0.70/lib/Net/OpenSSH.pm
Net-OpenSSH-0.70/t/
Net-OpenSSH-0.70/t/common.pm
Net-OpenSSH-0.70/t/known_hosts
Net-OpenSSH-0.70/t/uri.t
Net-OpenSSH-0.70/t/test_server_key.pub
Net-OpenSSH-0.70/t/test_user_key
Net-OpenSSH-0.70/t/test_user_key.pub
Net-OpenSSH-0.70/t/1_run.t
Net-OpenSSH-0.70/t/test_server_key
Net-OpenSSH-0.70/t/quoting.t
Net-OpenSSH-0.70/patches/
Net-OpenSSH-0.70/patches/openssh-fwd-stdio-to-streamlocal-1.patch
Net-OpenSSH-0.70/Makefile.PL
Net-OpenSSH-0.70/README
Net-OpenSSH-0.70/MANIFEST
Net-OpenSSH-0.70/META.yml
Net-OpenSSH-0.70/META.json
CPAN: File::Temp loaded ok (v0.22)
Working directory is /usr/local/home/myuser/.cpan/build/Net-OpenSSH-0.
+70-ARY6NC
# perl Makefile.PL
Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for Net::OpenSSH
Writing MYMETA.yml and MYMETA.json
# make
cp lib/Net/OpenSSH/ConnectionCache.pm blib/lib/Net/OpenSSH/ConnectionC
+ache.pm
cp lib/Net/OpenSSH/ShellQuoter/fish.pm blib/lib/Net/OpenSSH/ShellQuote
+r/fish.pm
cp lib/Net/OpenSSH/ShellQuoter/POSIX.pm blib/lib/Net/OpenSSH/ShellQuot
+er/POSIX.pm
cp lib/Net/OpenSSH/ShellQuoter.pm blib/lib/Net/OpenSSH/ShellQuoter.pm
cp lib/Net/OpenSSH/ModuleLoader.pm blib/lib/Net/OpenSSH/ModuleLoader.p
+m
cp lib/Net/OpenSSH/ShellQuoter/Chain.pm blib/lib/Net/OpenSSH/ShellQuot
+er/Chain.pm
cp lib/Net/OpenSSH/Constants.pm blib/lib/Net/OpenSSH/Constants.pm
cp lib/Net/OpenSSH/SSH.pm blib/lib/Net/OpenSSH/SSH.pm
cp lib/Net/OpenSSH/ShellQuoter/MSWin.pm blib/lib/Net/OpenSSH/ShellQuot
+er/MSWin.pm
cp lib/Net/OpenSSH/ShellQuoter/MSCmd.pm blib/lib/Net/OpenSSH/ShellQuot
+er/MSCmd.pm
cp lib/Net/OpenSSH.pm blib/lib/Net/OpenSSH.pm
cp lib/Net/OpenSSH/OSTracer.pm blib/lib/Net/OpenSSH/OSTracer.pm
cp lib/Net/OpenSSH/ShellQuoter/csh.pm blib/lib/Net/OpenSSH/ShellQuoter
+/csh.pm
cp lib/Net/OpenSSH/ObjectRemote.pm blib/lib/Net/OpenSSH/ObjectRemote.p
+m
Manifying 7 pod documents
# perl -Ilib -w t/quoting.t

[download]

Replies are listed 'Best First'.
Re^5: Cpan install gets stuck installing Net OpenSSH ?
by salva (Canon) on Mar 12, 2016 at 08:00 UTC
    That testing script runs some commands in order to find which shells are available on your system. One of those commands is not behaving as expected and not returning control back to the the testing script.

    Could you run the following Perl code and post here the output: 

    $|=1;
for (qw(sh csh bash tcsh ksh dash ash pdksh mksh zsh fish)) {
  print "shell: $_\n";
  system $_ => '-c', 'echo good';
}

    [download]
[reply]
[d/l]
      system $_ => '-c', 'echo good';

      Nothing to do with the OP's problem (and I apologise for intruding), but I'm wondering why you've written the system command that way as opposed to (say) either: 
      system $_ => '-c' => 'echo good';
or
system $_, '-c', 'echo good';

      [download]
      Is it a stylistic preference, or is there a practical advantage in writing it the way you've chosen ?

      For me, all three of those alternatives work equally well on both Windows and Ubuntu.
      Admittedly, there's quite a few shells specified there that I don't have.

      Cheers,
      Rob
[reply]
[d/l]
        Style... or lack of it!
[reply]
      shell: sh
good
shell: csh
good
shell: bash
good
shell: tcsh
good
shell: ksh
good
shell: dash
shell: ash
shell: pdksh
shell: mksh
shell: zsh
good
shell: fish
-bash-3.2$

      [download]
[reply]
[d/l]
        Working directory is /usr/local/home/myuser/.cpan/build/Net-OpenSSH-0.70-ARY6NC

        Try cd'ing to that directory, and then run: 
        perl -Mblib t/quoting.t

        [download]
        If that hangs, kill the process (Ctrl-C) and start inserting some print statements in t/quoting.t to see how far into the script you get before it hangs.
        Then we'll know precisely what function call is hanging - and you might even be able to insert some print statements into that function to more precisely locate the hang.

        If, for example, you find that the hang occurs in the shell_is_clean function (at about line 29 of t/quoting.t) you could stick print statements within that function (which is found in t/common.pm) to further narrow it down.

        Cheers,
        Rob
[reply]
[d/l]

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