07-13-2001
UNIX is a computing architectural philosophy, not a product. Linux, BSD, Darwin, HP-UX, Solaris, AIX...... you name them..... are all wonderful variations of a common architectural philosophy.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Friends,
I did following exercise
$ echo '' > test
$ od -b test
$ echo "">test
$ od -b test
$echo > test
$od -b test
Every time I got the following output
0000000 012
0000001
But 012 is octal value for new line character .
Even though there is no apperent new line character... (6 Replies)
Discussion started by: j1yant
6 Replies
2. UNIX for Dummies Questions & Answers
Ok what is BSD exactly? I know its a type of open source but what is it exactly? (1 Reply)
Discussion started by: Corrail
1 Replies
3. Programming
Hello. I'm a complete newbie to C programming. I have a C program that wasn't written by me where I need to write some wrappers around it to automate and make it easier for a client to use. The problem is that the program accepts standard input to control the program... I'm hoping to find a simple... (6 Replies)
Discussion started by: Xeed
6 Replies
4. UNIX for Dummies Questions & Answers
Hi Guys,
I've been learning UNIX for the past couple of days and I came across this exercise, I can't get my head around it, so I would be ever so grateful if I could receive some sort of help or direction with this.
Create a file with x amount of lines in it, the content of your choice. ... (3 Replies)
Discussion started by: aforball
3 Replies
5. Shell Programming and Scripting
i am doing ls -la
in the out put , first line is as
total 41621
What is this total? (2 Replies)
Discussion started by: Saurabh78
2 Replies
6. Shell Programming and Scripting
Hi,
Please don't berate me over the simplicity of these questions. I have recently gotten into bash shell scripting and enjoy it quite a bit. One thing I have not found the answer to though is when naming a shell script, what extension is normally used (ie myscript.?)? Also where is the standard... (5 Replies)
Discussion started by: msb65
5 Replies
7. UNIX for Dummies Questions & Answers
I had a script in solaris wich i read data, for example:
Number 1: _
and the cursor use to be in '_' place because in the code of the script i write:
echo "Number 1:\c"
but i copy the script to a linux and the cursor 'jump' to the begining of the next line like:
Number 1:... (2 Replies)
Discussion started by: lestat_ecuador
2 Replies
8. UNIX for Dummies Questions & Answers
hi everybody;
trying to c unix programming and ive stucked with a problem:
simple program
filedr=open("tempfile",O_RDWR|O_TRUNC,0);
write(filedr,msg1,6);
int i;
i=read(filedr,msg3,4);
it returns 0 bytes read ... why?
well if i try to poll() before read , it doesnt indicate POLLHUP or... (4 Replies)
Discussion started by: IdleProc
4 Replies
9. Shell Programming and Scripting
I am having trouble making this statement work. I am passing in a number value for the number of days to keep archive logs for and wanted to make sure that it is a number. I have a script that will return 1 for is a number and 0 for is not a number. I also want to make sure that the number is not... (2 Replies)
Discussion started by: gandolf989
2 Replies
10. Red Hat
Cheers!
In /etc/syslog.conf, if an error type is not specified, is it logged anywhere (most preferable is it logged to /var/log/messages) or not?
To be more precise I am interested in error and critical level messages. At default these errors are not specified in syslog.conf, and I need to... (6 Replies)
Discussion started by: dr1zzt3r
6 Replies
LEARN ABOUT CENTOS
disktype
DISKTYPE(1) BSD General Commands Manual DISKTYPE(1)
NAME
disktype -- disk format detector
SYNOPSIS
disktype file...
DESCRIPTION
The purpose of disktype is to detect the content format of a disk or disk image. It knows about common file systems, partition tables, and
boot codes.
USAGE
disktype can be run with any number of regular files or device special files as arguments. They will be analyzed in the order given, and the
results printed to standard output. There are no switches in this version. Note that running disktype on device files like your hard disk
will likely require root rights.
See the online documentation at <http://disktype.sourceforge.net/doc/> for some example command lines.
RECOGNIZED FORMATS
The following formats are recognized by this version of disktype.
File systems:
FAT12/FAT16/FAT32, NTFS, HPFS, MFS, HFS, HFS Plus, ISO9660, ext2/ext3, Minix, ReiserFS, Reiser4, Linux romfs, Linux cramfs, Linux
squashfs, UFS (some variations), SysV FS (some variations), JFS, XFS, Amiga FS/FFS, BeOS BFS, QNX4 FS, UDF, 3DO CD-ROM file system,
Veritas VxFS, Xbox DVD file system.
Partitioning:
DOS/PC style, Apple, Amiga "Rigid Disk", ATARI ST (AHDI3), BSD disklabel, Linux RAID physical disks, Linux LVM1 physical volumes, Linux
LVM2 physical volumes, Solaris x86 disklabel (vtoc), Solaris SPARC disklabel.
Other structures:
Debian split floppy header, Linux swap.
Disk images:
Raw CD image (.bin), Virtual PC hard disk image, Apple UDIF disk image (limited).
Boot codes:
LILO, GRUB, SYSLINUX, ISOLINUX, Linux kernel, FreeBSD loader, Sega Dreamcast (?).
Compression formats:
gzip, compress, bzip2.
Archive formats:
tar, cpio, bar, dump/restore.
Compressed files (gzip, compress, bzip2 formats) will also have their contents analyzed using transparent decompression. The appropriate com-
pression program must be installed on the system, i.e. gzip(1) for the gzip and compress formats, bzip2(1) for the bzip2 format.
Disk images in general will also have their contents analyzed using the proper mapping, with the exception of the Apple UDIF format.
See the online documentation at <http://disktype.sourceforge.net/doc/> for more details on the supported formats and their quirks.
HOMEPAGE
http://disktype.sourceforge.net/
AUTHOR
Christoph Pfisterer <chrisp@users.sourceforge.net>
SEE ALSO
file(1), gpart(8)
Feb 21, 2005