07-23-2010
determine file type by content, not extension
I have a directory structure with multiple sub directories. Within each directory, there are files without extensions. Is it possible to somehow tell what the file type should be by the file contents?
For example, I opened one of the files using an editor. After scrolling to the end of the file, I can tell the file is a Microsoft Word document. So after closing the file, I add ".doc" to the end of the filename.
I want to automate this process if possible.
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LEARN ABOUT OPENSOLARIS
gvfs-ls
gvfs-ls(1) User Commands gvfs-ls(1)
NAME
gvfs-ls - list the content of directories using the VFS system
SYNOPSIS
gvfs-ls [-a] [-h] [-l] [-c] URI
DESCRIPTION
gvfs-ls lists the content of directories using the VFS system.
OPTIONS
The following options are supported:
-a Acts as a attribute filter. It specifies what attributes to print.
-h Show hidden files
-l User a long listing format
-c Show completions
EXAMPLES
Example 1: List the content of a local directory
example% gvfs-ls file:///usr/bin/
Example 2: List the content of a remote directory
example% gvfs-ls smb://server/resource/
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables: NLSPATH.
EXIT STATUS
The exit value 0 is returned regardless of success or failure.
FILES
The following files are used by this application:
/usr/bin/gvfs-ls Executable to list the content of the directory using the VFS system
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWgnome-gvfs |
+-----------------------------+-----------------------------+
|Interface stability |Volatile |
+-----------------------------+-----------------------------+
SEE ALSO
gvfs-copy(1), gvfs-cat(1), gvfs-less(1), gvfs-info(1), gvfs-mkdir(1) gvfs-monitor-dir(1), gvfs-monitor-file(1), gvfs-mount(1), gvfs-
move(1), gvfs-rename(1), gvfs-open(1), gvfs-rm(1), gvfs-save(1), gvfs-trash(1), gvfs-tree(1), attributes(5), environ(5)
NOTES
Written by Alvaro Lopez Ortega, Sun Microsystems Inc., 2008.
SunOS 5.11 25 Mar 2008 gvfs-ls(1)