End of script output before headers error in Apache

Question

Apache on Windows gives me the following error when I try to access my Perl script   Server error   The server encountered an internal error and was unable to complete your request   Error message   End of script output before headers  sample pl  If you think this is a server error  please contact the webmaster   Error 500  localhost Apache 2 4 4  Win32  OpenSSL 1 0 1e PHP 5 5 3   this is my sample script     C  xampp perl bin perl exe  print  Hello World     but not working on browser

User · Answer

For future reference    This is typically an error that occurs when you are unable to view or execute the file  the reason for which is generally a permissions error  I would start by following  Renning  s suggestion and running chmod 755 test cgi  obviously replace test cgi with the name of your cgi script here    If that doesn t work there are a couple other things you can try  I once got this error when I created test cgi as root in another user s home  The fix there was to run chmod user user test cgi where user is the name of the user who s home you re in   The last thing I can think of is making sure that your cgi script is returning the proper headers  In my ruby script I did it by putting puts  Content-type  text html  before I actually outputted anything to the page   Happy coding

User · Answer

If using Suexec  ensure that the script and its directory are owned by the same user you specified in suexec    In addition  ensure that the user running the cgi script has permissions execute permissions to the file AND the program specified in the shebang    For example if my cgi script starts with       usr bin cgirunner   Then the user needs permissions to execute  usr bin cgirunner

User · Answer

Probably this is an SELinux block  Try this     setsebool -P httpd enable cgi 1   chcon -R -t httpd sys script exec t cgi-bin your script cgi

User · Answer

So for everyone starting out with XAMPP cgi  change the extension from pl to cgi change the permissions to 755  mv test pl test cgi chmod 755 test cgi   It fixed mine as well

User · Answer

You may be getting this error if you are executing CGI files out of a home directory using Apache s mod userdir and the user s public html directory is not group-owned by that user s primary GID   I have been unable to find any documentation on this  but this was the solution I stumbled upon to some failing CGI scripts   I know it sounds really bizarre  it doesn t make any sense to me either   but it did work for me  so hopefully this will be useful to someone else as well

User · Answer

Since no answer is accepted  I would like to provide one possible solution  If your script is written on Windows and uploaded to a Linux server through FTP   then the problem will raise usually  The reason is that Windows uses CRLF to end each line while Linux uses LF  So you should convert it from CRLF to LF with the help of an editor  such Atom  as following

User · Answer

Had the same error on raspberry-pi  I fixed it by adding -w to the shebang     usr bin perl -w

User · Answer

Internal error is due to a  HIDDEN  character  at end of shebang line     ie line     usr bin perl By adding   -   or  -w  at end  moves the character away from  quot perl quot   allowing the path to the perl processor to be found and script to execute  HIDDEN character is created by the editor used to create the script

User · Answer

Basing above suggestions from all  I was using xampp for running cgi scripts  Windows 8 it worked with out any changes  but Cent7 0 it was throwing errors like this as said above      AH01215   2 No such file or directory  exec of   opt lampp cgi-bin pbsa config cgi  failed   opt lampp cgi-bin pbsa config cgi  referer  http    lt   MCB HTML TestBed html       Wed Aug 30 09 11 03 796584 2017   cgi error   pid 32051   client XX 60624  End of script output before headers  pbsa config cgi  referer  http   xx MCB HTML TestBed html   Try   Disabled selinux  Given full permissions for script  but 755 will be ok  I finaly added like -w like below      usr bin perl -w   use CGI   standard              print header                          end html           -w   indictes enable all warnings It started working  No idea why -w here

User · Answer

In my case I had a similar problem but with c    this in windows 10  the problem was solved by adding the environment variables  path  windows  the folder of the c    libraries  in my case I used the codeblock libraries    C  codeblocks MinGW bin

User · Answer

If this is a CGI script for the web  then you must output your header      C  xampp perl bin perl exe   print  Content-Type  text html n n   print  Hello World     The following error message tells you this End of script output before headers  sample pl  Or even better  use the CGI module to output the header      C  xampp perl bin perl exe   use strict  use warnings   use CGI   print CGI  header    print  Hello World

User · Answer

Check file permissions   I had exactly the same error on a Linux machine with the wrong permissions set   chmod 755 myfile pl  solved the problem

[apache] "End of script output before headers" error in Apache

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