python - Why is the "file" command get confused on .py files? -

-

i have several python modules i've written. randomly, used file on directory, , surprised saw. here's resulting count of thought files were:

  1 ascii java program text, long lines   1 /bin/env python script text executable   1 python script text executable   2 ascii c++ program text   4 ascii english text  18 ascii java program text

that's strange! idea what's going on or why seems think python modules java files?

i'm using centos 5.2.

edit question more geared towards curiosity on why non-java , non-c++ program file being classified such. don't expect file perfect, surprised on choices being made. have guessed give , text file rather making incorrect inferences.

from file man page

file tests each argument in attempt classify it. there 3 sets of tests, performed in order: filesystem tests, magic number tests, , language tests. first test succeeds causes file type printed.

my guess of files happen match tests different languages , incorrectly identify file.

also, file intended binary files, bugs section indicates.

file uses several algorithms favor speed on accuracy, can misled contents of text files.

the support text files (primarily programming languages) simplistic, inefficient , requires recompilation update.


Comments

Post a Comment

Popular posts from this blog

Javascript line number mapping -

-
magically formatted comments change reported line number of javascript errors in browsers; this: //@line n "f" n line number , f file name. unfortunately, //@line appears ungoogleable. know there documentation on feature, , browsers support it? (i found references here , here .) from can find available in mozilla based browsers. it using js_setoptions command can turn these options on or off depending on values passed. https://developer.mozilla.org/en/js_setoptions
Read more

c# - Is it possible to remove an existing registration from Autofac container builder? -

-
something along lines: builder.registertype<mytype>().as<itype>(); builder.registertype<mytype2>().as<itype>(); builder.deregistertype<mytype>().as<itype>() var container = builder.build(); var types = container.resolve<ienumerable<itype>>(); assert.istrue(types.count == 1); assert.istrue(types[0].gettype == typeof(mytype2)); scenario: go through bunch of assemblies , go register types want make sure have 1 implementation of given type. need before create container. track on own nice if autofac me bit. this cannot done directly using containerbuilder , unless start on new one. mind you, having first built container should able construct new container filtering away unwanted types , reusing registrations first container. this: ... var container = builder.build(); builder = new containerbuilder(); var components = container.componentregistry.registrations .where(cr => cr.activator.limittype != typ...
Read more

php - Mysql PK and FK char(36) vs int(10) -

-
i have read mysql can handle indexes , searches better if tables keys integers rather char(36) uuid's. is worth converting int(10)? note: use 1 server , have have plans use multiple databases concurrently therefore removing 1 of big reasons using uuid. our tables innodb if makes difference. thanks in advance. usually rdbms can handle integer keys pk more efficient, other datatypes. reason how build index column, yes: long dont require string (or other typed) keys, should use integers. however: char(36) , int(10) far away being equal, because int(10) much smaller, char(36). dont know, if require many different keys, should keep in mind. update, complete last paragraph: int(10) 32-bit, char(36) 36 - ^byte^ (= 288-bit). not mean, int consumes less space, means, char(36) has 4 times more different keys.
Read more