Package: coreutils
Version: 8.4-1
Severity: normal
The 'info' examples are not too helpful. For instance:
zgrep -n -A 21 "reads its input" /usr/share/info/coreutils.info.gz
4139: `tsort' reads its input as pairs of strings, separated by blanks,
4140-indicating a partial ordering. The output is a total ordering that
4141-corresponds to the given partial ordering.
4142-
4143- For example
4144-
4145- tsort <<EOF
4146- a b c
4147- d
4148- e f
4149- b c d e
4150- EOF
4151-
4152-will produce the output
4153-
4154- a
4155- b
4156- c
4157- d
4158- e
4159- f
4160-
I applaud the abstraction of using letters, but that result isn't
special enough:
{ tr ' ' '\n' <<EOF
a b c
d
e f
b c d e
EOF
} | sort -u
a
b
c
d
e
f
Of course the above code is a coincidental replacement, not a true
'tsort'. It's as though we had an elite new command "mul" (short for
"multiply") and our example was:
% mul 2 2
4
Novices might wonder if "mul" added 2 & 2. The example would be
clearer if it showed a more distinctive result that wasn't trivial to
simulate.
The 'info' page's later "more realistic example" is an obscure C code
puzzle, of historic interest, and is perhaps informative to the small
minority that appreciates the puzzle.
-- System Information:
Debian Release: squeeze/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.31-1-686 (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)
Shell: /bin/sh linked to /bin/dash
Versions of packages coreutils depends on:
ii libacl1 2.2.49-2 Access control list shared library
ii libc6 2.10.2-5 Embedded GNU C Library: Shared lib
ii libselinux1 2.0.89-4 SELinux runtime shared libraries
coreutils recommends no packages.
coreutils suggests no packages.
-- no debconf information
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