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@airhole:~# uname -a
Linux airhole 4.4.140 #0 Fri Jul 13 19:25:14 2018 mips GNU/Linux
root@airhole:~# echo 'file1' > file1
root@airhole:~# ln -s file1 link1
root@airhole:~# cat link1
file1
root@airhole:~# mv file1 file2
root@airhole:~# echo 'fileb' > file1
root@airhole:~# cat link1
fileb
A client's antique server:
[root@intel1 tmp]# uname -a
Linux intel1.REDACTED 2.4.27 #7 SMP Mon Feb 23 19:45:51 EST 2009 i686
unknown
[root@intel1 tmp]# echo 'file1' > file1
[root@intel1 tmp]# ln -s file1 link1
[root@intel1 tmp]# cat link1
file1
[root@intel1 tmp]# mv file1 file2
[root@intel1 tmp]# echo 'fileb' > file1
[root@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
[email protected] or [email protected]
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Available For Hire: https://linkedin.com/in/billcole
