On Mon, Apr 15, 2013 at 10:44 AM, sven falempin <sven.falem...@gmail.com>wrote:
> *-i*[*extension*]
>
> -i"\.sed"
>
> but wow, nice way to destroy file.
>
> oh , it is tmpfs related :-)
>
> On Mon, Apr 15, 2013 at 8:12 AM, Marc Espie <es...@nerim.net> wrote:
>
>> $ cat goodfilename
>> coincoin
>>
>> $ perl -pi -e 's/toto/tutu/' goodfilename
>> works
>>
>> $ cp goodfilename /tmp
>> $ perl -pi -e 's/toto/tutu/' /tmp/goodfilename
>> Can't do inplace edit on goodfilename: File exists.
>> $ cat /tmp/goodfilename
>> cat: /tmp/goodfilename: No such file or directory.
>>
>> ktrace shows a disturbing lack of Unix semantics:
>> ....
>> 15350 perl CALL open(0x1850b9e863f0,0<O_RDONLY>)
>> 15350 perl NAMI "goodfilename"
>> 15350 perl RET open 3
>> ...
>> 15350 perl CALL unlink(0x1850b9e86a00)
>> 15350 perl NAMI "goodfilename"
>> 15350 perl RET unlink 0
>> 15350 perl CALL
>> open(0x1850b9e868e0,0xa01<O_WRONLY|O_CREAT|O_EXCL>,0x180<S_IRUSR|S_IWUSR>)
>> 15350 perl NAMI "goodfilename"
>> 15350 perl RET open -1 errno 17 File exists
>>
>>
>> err...
>>
>> simply put:
>>
>> #include <fcntl.h>
>> #include <unistd.h>
>> #include <stdio.h>
>>
>> int
>> main()
>> {
>> if (open("fucked_up", O_RDWR|O_CREAT|O_TRUNC, 0666) == -1)
>> perror("open");
>> if (unlink("fucked_up") != 0)
>> perror("unlink");
>> if (open("fucked_up", O_WRONLY|O_CREAT|O_EXCL, 0666) == -1)
>> perror("reopen");
>> return 0;
>> }
>>
>>
>
>
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