Back up implementation Post: 302700515

9 More Discussions You Might Find Interesting

1. AIX

back to back printing in UNIX

Hi , Can you suggest me how to back to back printing in UNIX? Is there any way? Kindly advise. Regards Vijaya Amirtha Raj

2. IP Networking

Back-to-Back Connection using HBAs

Hi every body, Is it possible to connect two servers Back-to-Back (Point-to-Point) using HBA adapters & using Fiber. Note it is direct connection & there is no switches between the servers. I'm concern about using HBA adapters, it is possible or not. Thanks in advance. :)

3. Shell Programming and Scripting

Need help on AWK implementation

Hi, I am accepting a string from user. compare this output with the awk output as below... echo "\n\n\tDay : \c" read day awk '{ if($day == $2) { if ($mon == $1) { print "Yes" }}}' syslog.txt I am getting the follwoing error awk: Field $() is not correct. The input line...

4. Programming

Malloc implementation in C

Hey Guys I am trying to implement the malloc function for my OS class and I am having a little trouble with it. I would be really grateful if I could get some hints on this problem. So I am using a doubly-linked list as my data structure and I have to allocate memory for it (duh...). The...

5. UNIX for Advanced & Expert Users

Malloc Implementation in C

Hey Guys Some of my friends have got together and we are trying to write a basic kernel similar to Linux. I am trying to implement the malloc function in C and I am using a doubly linked list as the primary data structure. I need to allocate memory for this link list (duh...) and I don't feel...

6. Programming

Implementation of dup2

Hi all,I'm reading <Advanced programming in the UNIX environment>,that book asked the reader to implement a function which has same functions with dup2 without calling fcntl.Could anyone give me a tip?Any help will be appreciated.:)

7. Linux

CAPWAP implementation

Hi I'm trying to implement CAPWAP protocol for my application.i'm able to configure my server side but i'm getting error at client(WTP) side as IOCTL error.while running the command #./WTP /mnt/cf/capwap/ : wlan2 Starting WTP... # WTP Loads...

8. UNIX for Dummies Questions & Answers

Lseek implementation

Hi everybody, i've been googling for ages now and gotten kinda desperate... The question, however, might be rather trivial for the experts: What is it exactly, i.e. physically, the POSIX function (for a file) "lseek" does? Does it trigger some kind of synchronization on disk? Is it just for the...

9. Programming

C: CSV implementation

I have this code from a programming book: #include <stdio.h> #include <string.h> char buf; /* input line buffer */ char* field; /* fields */ char* unquote( char* ); /* csvgetline: read and parse line, return field count */ /* sample input:...

LEARN ABOUT FREEBSD

mksnap_ffs

MKSNAP_FFS(8)						    BSD System Manager's Manual 					     MKSNAP_FFS(8)

NAME

     mksnap_ffs -- take a file system snapshot

SYNOPSIS

     mksnap_ffs snapshot_name

DESCRIPTION

     The mksnap_ffs utility creates a snapshot named snapshot_name.

     The group ownership of the file is set to ``operator''; the owner of the file remains ``root''.  The mode of the snapshot is set to be read-
     able by the owner or members of the ``operator'' group.

EXAMPLES

     Create a snapshot of /usr/home file system and mount the snapshot elsewhere:

	   mksnap_ffs /usr/home/snapshot
	   mdconfig -a -t vnode -o readonly -f /usr/home/snapshot
	   mount -o ro /dev/md0 /mnt/

SEE ALSO

     chmod(2), chown(8), mdconfig(8), mount(8)

HISTORY

     The mksnap_ffs utility first appeared in FreeBSD 5.0.

CAVEATS

     The disk full situation is not handled gracefully and may lead to a system panic when no free blocks are found.

     Every filesystem can have only up to 20 active snapshots.	When this limit is reached, attempting to create more snapshots fails with ENOSPC,
     and mksnap_ffs reports that it is ``out of space''.

BSD
								 February 14, 2011							       BSD