[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#31493: please add null-terminated line output for sha256sum, sha1sum
Daniel Kahn Gillmor
bug#31493: please add null-terminated line output for sha256sum, sha1sum, etc
Fri, 18 May 2018 10:49:28 -0400
Hi GNU coreutils developers!
This is a feature request for the hashing/digesting tools in coreutils,
like sha256sum, sha1sum, md5sum, etc.
currently, those tools emit line-oriented output about the files that
they hash. if a file has a newline in the name, those tools emit output
with a leading /, like so:
0 address@hidden:~$ sha256sum a*
98ea6e4f216f2fb4b69fff9b3a44842c38686ca685f3f55dc48c5d3fb1107be4 a b
most users of sha256sum (etc) in shell scripts probably are unaware of
this behavior and just cross their fingers and hope no file has a
newline in its filename.
However, other common tools have processing options that use
NUL-terminated records. For example, sort (-z) and find (-print0) and
It would be nice if sha256sum (etc) had a comparable functionality to be
able to fit better into pipelines with these other tools.
So i'm proposing a flag -z, --zero-terminated for these tools that
alters the output (and input) format, to use NUL chars instead of
newlines. presumably when that flag is used, the emitted data should
*not* be backslash-escaped.
Description: PGP signature
- bug#31493: please add null-terminated line output for sha256sum, sha1sum, etc,
Daniel Kahn Gillmor <=