12-22-2014
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
How do l restrict more than one users on a multiple programming environment using the c shell profile. That is if a user is log-on on one terminal the system should be able to prompt a message if the users attempt to log on on another terminal. I user openserver 5.0.4 with dummy terminals, and also... (7 Replies)
Discussion started by: kayode
7 Replies
2. Filesystems, Disks and Memory
Dear all,
I am trying to create a new user account that can have the minimum access to the HP-Ux box, as in it only need to perform system info query like bdf and only able to read access system log files but not able to delete any file from any other directory beside it's own user directory... (5 Replies)
Discussion started by: gelbvonn
5 Replies
3. AIX
I want to restrict user's loging according to number of session.
example the user named "patrik" can be login concurrently from 12 stations thru telnet the 13th if some body tries to telnet 13th session it should not allow, until any of the 12 sessions are closed.
is it possibel ...i think... (2 Replies)
Discussion started by: pchangba1
2 Replies
4. AIX
please I want a help to how can I get C++ compiler to AIX OS. (3 Replies)
Discussion started by: Ahmed waheed
3 Replies
5. AIX
hi,
I am facing a problem
from the remote system if i login to my AIX5.3 machine as root (thru telnet) the session does not expire for 2 hours even if the session is kept ideal
But whenever i do the same thing from some other user then the session is lost within 10 minutes (if session is kept... (2 Replies)
Discussion started by: pchangba
2 Replies
6. AIX
Hi Team
I have a native applicaiton built on AIX using the xLC v8
Which could be the possible impacts from a code change point of view if I'll compile with the xLC v10?
Thanks
Marco (0 Replies)
Discussion started by: antcos
0 Replies
7. UNIX for Advanced & Expert Users
Dear All
I had one user called msc. In that i had two folder.xxx and yyy
ex: /home/msc/xxx
ex: /home/msc/yyy
Now i want that msc user only able to access xxx folder only. No other folder should be visible to it.
Kindly let me know. How it possile??
Regards
Jaydeep (3 Replies)
Discussion started by: jaydeep_sadaria
3 Replies
8. UNIX for Dummies Questions & Answers
Hello,
I would to create a new user with some restriction:
1. The user will not be able to CD any directory (I mean he'll login to the defined home directory and that's all).
2. The user will not be able to delete anything in that home directory
Thanks a lot in advance,
Shahar (1 Reply)
Discussion started by: shaharoz
1 Replies
9. Linux
Hi Friends,
I have installed a FTP Server on my Linux machine (Fedora 11).
I want the ftp users to be restricted to their own home dir using sftp.
But the said condition is met when the user logs in using ftp over port 21 and when the user logs in using sftp i.e. protocol 22, he/she has... (4 Replies)
Discussion started by: pashy
4 Replies
10. AIX
Hi All,
How can I restrict the folder on an FTP USER on AIX 5.3? I don't want the ID to change folder other than his own home folder.
Thanks for any comment you may add. (7 Replies)
Discussion started by: itik
7 Replies
LEARN ABOUT DEBIAN
pbmreduce
pbmreduce(1) General Commands Manual pbmreduce(1)
NAME
pbmreduce - read a portable bitmap and reduce it N times
SYNOPSIS
pbmreduce [-floyd|-fs|-threshold ] [-value val] N [pbmfile]
DESCRIPTION
Reads a portable bitmap as input. Reduces it by a factor of N, and produces a portable bitmap as output.
pbmreduce duplicates a lot of the functionality of pgmtopbm; you could do something like pnmscale | pgmtopbm, but pbmreduce is a lot
faster.
pbmreduce can be used to "re-halftone" an image. Let's say you have a scanner that only produces black&white, not grayscale, and it does a
terrible job of halftoning (most b&w scanners fit this description). One way to fix the halftoning is to scan at the highest possible res-
olution, say 300 dpi, and then reduce by a factor of three or so using pbmreduce. You can even correct the brightness of an image, by
using the -value flag.
OPTIONS
By default, the halftoning after the reduction is done via boustrophedonic Floyd-Steinberg error diffusion; however, the -threshold flag
can be used to specify simple thresholding. This gives better results when reducing line drawings.
The -value flag alters the thresholding value for all quantizations. It should be a real number between 0 and 1. Above 0.5 means darker
images; below 0.5 means lighter.
All flags can be abbreviated to their shortest unique prefix.
SEE ALSO
pnmenlarge(1), pnmscale(1), pgmtopbm(1), pbm(5)
AUTHOR
Copyright (C) 1988 by Jef Poskanzer.
02 August 1989 pbmreduce(1)