file - determine file type.
1
vote
1answer
35 views
file command does not recognize perl module
The file command (Debian Jessie) in does not recognize some Perl modules.
For example: /usr/share/perl5/XML/SAX.pm (from libxml-sax-perl) gives:
$ file /usr/share/perl5/XML/SAX.pm
/usr/share/perl5/...
1
vote
1answer
47 views
file command output for a non-ASCII text file in AIX and Linux [closed]
I am getting different output while using file command in AIX vs Linux.
File contents :
D|P_APAC_PH_PHINGTF00240_20150731031225|APAC|PH|NN (L) SPEK DYWIDENDOWYCH RYNKÓW WSCHODZCYCH||4|20130308|PHN|...
1
vote
2answers
38 views
/usr/bin/file exit status always 0
I'm trying to use /usr/bin/file to detect file types in a program but also would like it to report if the file does not exist. However the command always returns exit status 0.
Besides grepping the ...
1
vote
2answers
64 views
how to move all files from a pipe into a directory ?
I performed a file-command on all elements in my Desktop directory:
~/Desktop > file *
then I grepped all the lines who have the string "image" in the description:
~/Desktop > file * | grep ...
3
votes
1answer
33 views
file/libmagic: What is the “ID3 length”?
The man pages of the file command/libmagic are talking about a datatype called "ID3 length".
The only explanation i found was:
A 32-bit ID3 length
So what is this for a type ? Is it related to the ...
0
votes
1answer
34 views
libmagic (file) database “use” and “clear” type
I am currently writing a parser for the libmagic database (used by the file command) and i don't found any information on the 'use' and 'clear' type (second column in the magic file).
Can someone ...
8
votes
2answers
356 views
How did file identify this particular file?
I'm running file against a wallet.dat file (A file that Bitcoin keeps its private keys in) and even though there doesn't seem to be any identifiable header or string, file can still tell that it's a ...
3
votes
5answers
4k views
Bash script: check if a file is a text file [closed]
I am writing a menu based bash script, one of the menu options is to send an email with a text file attachment. I am having trouble with checking if my file is a text file. Here is what I have:
...
3
votes
2answers
658 views
How to list files on terminal so that we can see the file types such executable, ascii etc?
I have been trying to list files in directory using ls and passing it different options.
Does it have the ability to list types of files as well ? I want to know which ones are executable , ...
3
votes
2answers
519 views
How to list only JPEG files from root below using the command line?
I am searching for a method to find only JPEG files/
With my limited knowledge of Linux I came to this point:
list all paths that exist from root below with find /
pipe the result into next command ...
2
votes
2answers
876 views
file command apparently returning wrong MIME type
Why doesn't the following return text/csv?
$ echo 'foo,bar\nbaz,quux' > temp.csv;file -b --mime temp.csv
text/plain; charset=us-ascii
I used this example for extra clarity but I'm also ...
1
vote
3answers
230 views
Find file by magic pattern maching
There is a bash command file(1) which outputs a file's contents type according to the matching pattern definitions in the /etc/magic and /usr/share/misc/magic.
Is there a way to use these pattern ...
1
vote
1answer
2k views
How to check the file type in a script
I want to do a loop for all the images in a directory. The images doesn't have extension so I have to read the first bytes of the image to know its type. The loop should end up being something like.
...
0
votes
2answers
2k views
Check if a file is a text file in bash
I am trying to make a check to see if the file being attached to the email is a text file, and if it is not it returns an error. However during testing, I provide a valid text.txt and it returns the "...
8
votes
2answers
720 views
Finding a file type assuming wrong extension
I have an image archive I keep up. Sometimes, the sites I pull them from reformat the file while keeping the extension the same, most often making PNG images into JPG's that are still named ".png". ...
5
votes
1answer
133 views
file(1) and magic(5) : prioritizing a result
My question follows that one: file(1) and magic(5) : describing other formats .
I want to describe a FASTA sequence ( http://en.wikipedia.org/wiki/FASTA_format)
It could be a DNA sequence (with only ...
8
votes
2answers
402 views
file(1) and magic(5) : describing other formats
Can I use file and magic ( http://linux.die.net/man/5/magic ) to override the description of some other known formats ?
for example, I would like to describe the following formats:
BED: http://...
0
votes
2answers
720 views
File command database and identifying text files
Please let me know if below two statements are correct or not:
Folder /usr/share/mime/magic has a database/table that will give me what are the current possible file formats (outputs that I can get ...
8
votes
4answers
4k views
Linux file command classifying files
I need to recognize type of data contained in random files. I am new to Linux.
I am planning to use the file command to understand what type of data a file has. I tried that command and got the ...
3
votes
1answer
119 views
Test for a particular file format
This is a followup to Normal looking text file, detected by file as ASCII Pascal program text
It seems file can't be trusted all the time.
It seems possible that a particular file may be detected ...
19
votes
2answers
811 views
What does “magic tests” mean for the file command?
I was reading about the file command and I came across something I don't quite understand:
file is designed to determine the kind of file being queried.... file
accomplishes this by performing ...
1
vote
2answers
349 views
`file` doesn’t show proper mime-type for .m2ts files
I need to define mime type of various video files and I got a problem with .m2ts files. Before I stumbled on this, I used file utility with -iL keys and parsed the output with sed. Today I found that ...
6
votes
2answers
226 views
What's the story behind command file's suggestion?
While I'm reading file(1) I noticed this in the man page (emphasis mine):
When adding local definitions to /etc/magic, make sure to preserve these keywords.
Users depend on knowing that all the ...
7
votes
3answers
2k views
Fast way to determine if a file is a SQLite database
I am looking for a way to determine file types in a folder with thousands of files. File names do not reveal much and have no extension but are different types. Specifically I am trying to determine ...
2
votes
1answer
717 views
Detect file-type with the help of magic-file and rename file-suffix accordingly
I have a folder (the iPhone Backup) with various files without a suffix.
I want to run a batch process over these files, which detects each file's file-type (with the help of the magic-file database (...
5
votes
2answers
1k views
More sophisticated file command for deep inspection?
Sometimes it seems that the standard file command (5.04 on my Ubuntu system) is not sophisticated enough (or I am just using it wrong, which could well be).
For example when I run it on an .exe file, ...
2
votes
2answers
1k views
How to find human-readable information about file types recognized by `file`?
Searching, googling, I could not find any information about file types recognized by file.
For example, an *.mp4 file is identified as "ISO Media" (while being able to play with VLC normally). This ...
6
votes
1answer
303 views
What could cause strange behavior in file(1) command?
What could cause file(1) command to output application/msword application/msword (yes, twice in a row) as the mime type for some of the .doc files? Normally it prints just application/msword.
If run ...
2
votes
1answer
122 views
How can I create a file that just contains a binary number?
I would like to create a file that just contains a binary number. I think that touch can be used to create an empty file, but is there any way I can fill it with a binary number e.g. 10 (ten)? And how ...
6
votes
5answers
7k views
How to find image files by content
I have a list of files and I need to find all the image-files from that list.
For example, if my list contained the following:
pidgin.tar.gz
photo01.jpg
picture01
screenshot.gif
invoice.pdf
Then I ...
