如何在Windows上修复“perl未被识别”？

Question

I've set up a log file to pick up MySQL slow queries.

I've been unable to parse the file however. Linux makes this task seem very simple. In tutorials it seems as easy as:

 $ mysqldumpslow -s c -t 10

In Windows however, I'm not sure how you run Perl, located in: G:\\xampp\\perl\\bin with the Perl Script mysqldumpslow.pl , located in: G:\\xampp\\mysql\\scripts

I've tried to enter:

G:\\xampp\\mysql\\scripts\\perl mysqldumpslow -sc -t 10

The command prompt returns something like "perl is not recognized".

Answer 1

Errm, you are using the wrong paths.

If perl.exe is located in G:\\xampp\\perl\\bin and the mysql script in G:\\xampp\\mysql\\scripts, you need:

> G:\xampp\perl\bin\perl G:\xampp\mysql\scripts\mysqldumpslow.pl -s c -t 10.

Of course, that's a very roundabout way of doing things, so instead, add perl to your PATH, and cd into the correct directory and then run it:

> set PATH=G:\xampp\perl\bin\;%PATH%  // Note: This can be added in the
                                      // System Control Panel.
> cd /d G:\xampp\mysql\scripts
> perl mysqldumpslow.pl -s c -t 10

Or even better, add perl to your known filetypes.

1. Go to Explorer -> Tools -> Folder Options -> File Types.
2. Click 'New', type pl for the extension field. Click Ok.
3. Find PL in your list, click Advanced. Under Actions, click 'New'.

4. For Action type open , for 'Application used to perform action' type:

   G:\\xampp\\perl\\bin\\perl.exe -w "%1" %*

5. Click Ok.

Now you can just run the script as:

> mysqldumpslow.pl -s c -t 10

As you would in Linux.

Quick note: Adding .pl files as known file types is roughly equivalent to Unix people adding

#!/usr/bin/perl -w

to the start of every perl script. In Windows you only need to add it once.

Second note: The -w turns on Warnings in the perl interpreter. You can leave out the -w if you wish.

Answer 2

我使用以下命令修复了此错误：

set PATH=C:\perl\bin;%PATH%

Answer 3

if your Perl interpreter perl.exe is located in G:\\xampp\\perl\\bin , then use G:\\xampp\\perl\\bin\\perl.exe . For convenience of calling your Perl interpreter from anywhere , you can add the path G:\\xampp\\perl\\bin into your PATH environment variable. To call your Perl script, try this

c:\> G:\xampp\perl\bin\perl.exe G:\xampp\mysql\scripts\mysqldumpslow.pl