Perl not connecting to MySQL [Solved]

[Bill Cole]

On 12 Mar 2019, at 22:55, MacPorts wrote:

> This will also work if you remove the first file1, then create a new
> file1. This is what most text editors (vi, vim, emacs) will do. They
> move the original file to a temporary file, name the edited file the
> original name, and remove the temporary file. This is how symbolic 
> links
> work on macOS.

No, that is how symbolic links work on every POSIX-compliant file 
system.

> On Linux, this will break symbolic links.

You are mistaken.

Note the identical behavior from 5 random machines I had handy. 2 Macs, 
3 Linux:

An OpenWRT wireless router:

	root at airhole:~# uname -a
	Linux airhole 4.4.140 #0 Fri Jul 13 19:25:14 2018 mips GNU/Linux
	root at airhole:~# echo 'file1' > file1
	root at airhole:~# ln -s file1 link1
	root at airhole:~# cat link1
	file1
	root at airhole:~# mv file1 file2
	root at airhole:~# echo 'fileb' > file1
	root at airhole:~# cat link1
	fileb

A client's antique server:

	[root at intel1 tmp]# uname -a
	Linux intel1.REDACTED 2.4.27 #7 SMP Mon Feb 23 19:45:51 EST 2009 i686 
unknown
	[root at intel1 tmp]# echo 'file1' > file1
	[root at intel1 tmp]# ln -s file1 link1
	[root at intel1 tmp]# cat link1
	file1
	[root at intel1 tmp]# mv file1 file2
	[root at intel1 tmp]# echo 'fileb' > file1
	[root at intel1 tmp]# cat link1
	fileb

A different wireless router:

	/opt/home/admin # uname -a
	Linux asus-router 3.0.102 #1 Mon Feb 1 00:35:27 KRAT 2016 mips 
GNU/Linux
	/opt/home/admin # echo 'file1' > file1
	/opt/home/admin # ln -s file1 link1
	/opt/home/admin # cat link1
	file1
	/opt/home/admin # mv file1 file2
	/opt/home/admin # echo 'fileb' > file1
	/opt/home/admin # cat link1
	fileb

High Sierra:

	skinnyclam:~ $ uname -a
	Darwin skinnyclam.local 17.7.0 Darwin Kernel Version 17.7.0: Thu Dec 20 
21:47:19 PST 2018; root:xnu-4570.71.22~1/RELEASE_X86_64 x86_64
	skinnyclam:~ $ echo 'file1' > file1
	skinnyclam:~ $ ln -s file1 link1
	skinnyclam:~ $ cat link1
	file1
	skinnyclam:~ $ mv file1 file2
	skinnyclam:~ $ echo 'fileb' > file1
	skinnyclam:~ $ cat link1
	fileb

Snow Leopard:

	bigsky:tmp root# uname -a
	Darwin bigsky.REDACTED 10.8.0 Darwin Kernel Version 10.8.0: Tue Jun  7 
16:33:36 PDT 2011; root:xnu-1504.15.3~1/RELEASE_I386 i386
	bigsky:tmp root# echo 'file1' > file1
	bigsky:tmp root# ln -s file1 link1
	bigsky:tmp root# cat link1
	file1
	bigsky:tmp root# mv file1 file2
	bigsky:tmp root# echo 'fileb' > file1
	bigsky:tmp root# cat link1
	fileb



-- 
Bill Cole
bill at scconsult.com or billcole at apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Available For Hire: https://linkedin.com/in/billcole