Troubleshooting of POD permissions in perl

At the beginning, I plan to use perldoc to view the Apache2: Request module. The following error occurs during running:

Copy codeThe Code is as follows: Error in tempfile () using/tmp/XXXXXXXXXX: parent directory (./) is
Not writable at/usr/lib/perl5/5.8.8/Pod/Perldoc. pm line 1483.

Change to/tmp/to execute the command or report an error. It seems that it has nothing to do with PWD. It has something to do with/tmp's own permissions ~~ (Because I often perform experiments under/tmp, I may not know when I accidentally changed the permission)

Chmod 777/tmp

Run the command again. OK ~~

After reading the doc of Apache2: Request, I didn't find any header-related settings. I decided to directly look at the pm of apache. However, I just installed CPAN in a hurry, but I never care where they are all installed ......

/Usr/five or six directories are perl, which is not easy to find ~ (Remember that in the previous test, every time the perl script is executed, it takes several hundred milliseconds to find the position of the module ......)

I went to Baidu for a while and it was quite good. Seeing CPAN's FAQ set, there is exactly this method:

Copy codeThe Code is as follows: perl-MFile: Find = find-MFile: Spec: Functions-Tlwe 'Find {wanted => sub {print canonpath $ _ if /. pmz/}, no_chdir => 1}, @ INC'

Then grep Apache, you will see the results, are installed in the/usr/lib64/perl5/site_perl/5.8.8/x86_64-linux-thread-multi/Apache2 path. Go to grep '$ r-> header' * and you will immediately see that it is in RequestRec. pm.