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--- litespeed_wiki:other-ext-apps:apache-mod-perl-equivalent [2018/04/10 19:56]
Lisa Clarke Proofreading
+++ litespeed_wiki:other-ext-apps:apache-mod-perl-equivalent [2019/04/24 18:54]
Jackson Zhang [lscgid: execve() No such file error]
@@ Line 90: / Line 90: @@
 SERVER_SOFTWARE = LiteSpeed
 </code>
-==== Troubleshooting ====
+===== Troubleshooting =====
+==== Installation error ====
 Without the ''perl-CPAN'' package installed, installation may run into the following error:
   Can't locate CPAN.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .).
@@ Line 99: / Line 100: @@
    [STDERR] Can't locate FCGI.pm in @INC (@INC contains: /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5 .) at /usr/local/lsws/fcgi-bin/lsperld.fpl line 3
+==== lscgid: execve() No such file error ====
+Run a simple test perl script on cpanel server but it runs into the following error and generates 500 error code.
+  lscgid: execve():/home/user1/public_html/test.pl: No such file or directory
+{{ :litespeed_wiki:other-ext-apps:perl-lscgid-execve-nosuchfile-error.png?600 |}}
+Check the file and /home/user1/public_html/test.pl does exit. Why it still errors out as ''No such file or directory''?
+Inspect the file by vi:
+  cd /home/user1/public_html/
+  vi test.pl
+It shows ''^M'' at the end of each line, which means it is a dos/windows format, not unix format:
+  #!/usr/bin/perl^M
+  print "Content-type:text/html\n\n";^M
+  print <<EndOfHTML;^M
+  <html><head><title>Perl Environment Variables</title></head>^M
+  <body>^M
+  <h1>Perl Environment Variables</h1>^M
+  EndOfHTML^M
+  foreach $key (sort(keys %ENV)) {^M
+    print "$key = $ENV{$key}<br>\n";^M
+  }^M
+  print "</body></html>";
+To further test:
+  [[ $(file test.pl) =~ CRLF ]] && echo dos
+It returns:
+  dos
+Because of the difference of dos vs unix format, LiteSpeed lscgid can not recognise ''test.pl'' file and output ''No such file or directory''.
+To fix the issue, you will need to convert dos format to Unix. There are many ways to do so, the following ''awk'' command is just one of them:
+  mv test.pl test.pl.dos
+  awk 'sub("$", "\r")' test.pl.dos > test.pl
+You can verify the file format by ''vi test.pl'' and you don't see trailing ''^M'' in each line any more.
+  #!/usr/bin/perl
+  print "Content-type:text/html\n\n";
+  print <<EndOfHTML;
+  <html><head><title>Perl Environment Variables</title></head>
+  <body>
+  <h1>Perl Environment Variables</h1>
+  EndOfHTML
+  foreach $key (sort(keys %ENV)) {
+  print "$key = $ENV{$key}<br>\n";
+  }
+After the convertion, perl script is working perfectly.