06-16-2013
Quote:
Originally Posted by
wisecracker
I had no idea that the transient command structure was dynamic and that there is a minimal requirement.
Every command is a single executable. When you type "ls" you invoke "/usr/bin/ls", which is a program in its own right, quite as any other program. Now there might be a package "basic.commands", which bundles "ls" with other, similarily ubiquitous commands, but that doesn't have to be so. You could remove "/usr/bin/ls" from a system with no other consequence than not being able to list directories/files.
Now, there is a list of programs ("commands"), which is described in the POSIX documents as "mandatory". That means, if a systems calls itself "UNIX" it can be expected to have these programs. "ls" is part of this list, as is "awk", "sed", "sh", etc.. These commands should be installed wether or not they are actually used in a script running on this system. The same goes for libraries, interfaces, system calls, and similar functions of the system. All these are described in the POSIX documents. For the example "ls" this would mean there is a description about which commandlne options it has to understand and what exactly these options will make "ls" do when invoked.
Everything else is installed on top of that, but it is not "UNIX", just very common. That goes for "perl" as well as "gzip" and "ssh" and whatnot. These are quite common tools, but not "part of the UNIX system". It was once quite common to have these annoying nodding sausage dogs in the back of a car, but just because these are (or were) quite common doesn't mean they were "part of the system 'automobile'", like the steering wheel or the brake.
I hope this helps.
bakunin
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LEARN ABOUT DEBIAN
pygettext3
PYGETTEXT(1) General Commands Manual PYGETTEXT(1)
NAME
pygettext - Python equivalent of xgettext(1)
SYNOPSIS
pygettext [OPTIONS] INPUTFILE ...
DESCRIPTION
pygettext is deprecated. The current version of xgettext supports many languages, including Python.
pygettext uses Python's standard tokenize module to scan Python source code, generating .pot files identical to what GNU xgettext generates
for C and C++ code. From there, the standard GNU tools can be used.
pygettext searches only for _() by default, even though GNU xgettext recognizes the following keywords: gettext, dgettext, dcgettext, and
gettext_noop. See the -k/--keyword flag below for how to augment this.
OPTIONS
-a, --extract-all
Extract all strings.
-d, --default-domain=NAME
Rename the default output file from messages.pot to name.pot.
-E, --escape
Replace non-ASCII characters with octal escape sequences.
-D, --docstrings
Extract module, class, method, and function docstrings. These do not need to be wrapped in _() markers, and in fact cannot be for
Python to consider them docstrings. (See also the -X option).
-h, --help
Print this help message and exit.
-k, --keyword=WORD
Keywords to look for in addition to the default set, which are: _
You can have multiple -k flags on the command line.
-K, --no-default-keywords
Disable the default set of keywords (see above). Any keywords explicitly added with the -k/--keyword option are still recognized.
--no-location
Do not write filename/lineno location comments.
-n, --add-location
Write filename/lineno location comments indicating where each extracted string is found in the source. These lines appear before
each msgid. The style of comments is controlled by the -S/--style option. This is the default.
-o, --output=FILENAME
Rename the default output file from messages.pot to FILENAME. If FILENAME is `-' then the output is sent to standard out.
-p, --output-dir=DIR
Output files will be placed in directory DIR.
-S, --style=STYLENAME
Specify which style to use for location comments. Two styles are supported:
o Solaris # File: filename, line: line-number
o GNU #: filename:line
The style name is case insensitive. GNU style is the default.
-v, --verbose
Print the names of the files being processed.
-V, --version
Print the version of pygettext and exit.
-w, --width=COLUMNS
Set width of output to columns.
-x, --exclude-file=FILENAME
Specify a file that contains a list of strings that are not be extracted from the input files. Each string to be excluded must
appear on a line by itself in the file.
-X, --no-docstrings=FILENAME
Specify a file that contains a list of files (one per line) that should not have their docstrings extracted. This is only useful in
conjunction with the -D option above.
If `INPUTFILE' is -, standard input is read.
BUGS
pygettext attempts to be option and feature compatible with GNU xgettext where ever possible. However some options are still missing or
are not fully implemented. Also, xgettext's use of command line switches with option arguments is broken, and in these cases, pygettext
just defines additional switches.
AUTHOR
pygettext is written by Barry Warsaw <barry@zope.com>.
Joonas Paalasmaa <joonas.paalasmaa@iki.fi> put this manual page together based on "pygettext --help".
pygettext 1.4 PYGETTEXT(1)