Hello Shawn, On 3/22/19 12:23 AM, Shawn Landden wrote: > Signed-off-by: Shawn Landden <shawn@xxxxxxx> > --- > man2/execve.2 | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/man2/execve.2 b/man2/execve.2 > index a052f34b0..c363214c0 100644 > --- a/man2/execve.2 > +++ b/man2/execve.2 > @@ -336,6 +336,14 @@ For portable use, > should either be absent, or be specified as a single word (i.e., it > should not contain white space); see NOTES below. > .PP > +The maximum length of the shebang line is 128 bytes, and excess bytes will be truncated. > +.\" https://lwn.net/Articles/779997/ The case of the supersized shebang > +The interpreter is passed the absolute filename to the file. There is no way to get the argv[0] > +that was passed to the kernel via execve(2). > +.\" See the P - preserve-argv[0] option. > +.\" Documentation/admin-guide/binfmt-misc.rst > +.\" https://www.kernel.org/doc/html/latest/admin-guide/binfmt-misc.html > +.PP > Since Linux 2.6.28, > .\" commit bf2a9a39639b8b51377905397a5005f444e9a892 > the kernel permits the interpreter of a script to itself be a script. Thanks! I've applied most of this patch, except for the first changed line, and made some further tweaks. Cheers, Michael -- Michael Kerrisk Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/ Linux/UNIX System Programming Training: http://man7.org/training/
