05-25-2016
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
My program is written in cpp and it uses a non standard library. I have compiled successfully by linking it to the library. But when i try to run the program. it give a error message like:
"error while loading shared libraries: ***.so: cannot open shared object file: No such file or directory"... (2 Replies)
Discussion started by: zzz_zzz
2 Replies
2. Shell Programming and Scripting
Hi,
I have a requirement to change the user during runtime within a shell script. Is their any way via which I can change the user by prefeeding the password?
Please reply.
Thanks. (4 Replies)
Discussion started by: sam_roy
4 Replies
3. UNIX for Dummies Questions & Answers
Hello there,
is there any command in Unix to check that following ftp user is ftp or sftp user.
Thanks. (1 Reply)
Discussion started by: ahhmedbilal
1 Replies
4. UNIX for Advanced & Expert Users
Besides doing some shell-script which loops through /etc/passwd, I was wondering if there was some command that would tell me, like an enhanced version of getent.
The Operating system is Solaris 10 (recent-ish revision) using Sun DS for LDAP. (5 Replies)
Discussion started by: ckmehta
5 Replies
5. AIX
hi all
I have a problem to set up the password ssh login for a non-root user. what I want to do is that non-root user in host A logs into host B without password prompted.
what I did listed as the following steps.
1. genarate a pair of keys from host A.
ssy-keygen -t rsa -N "" -f... (9 Replies)
Discussion started by: rs6000er
9 Replies
6. Shell Programming and Scripting
Hi!
I am working on mac osx and have a script which prompts for password for a non-root user, can I avoid that?
su -m <user>
Prompts for a password.
Its a startup script and the start up fails?
How can I fix this?
Thanks,
Jack. (4 Replies)
Discussion started by: jacki
4 Replies
7. AIX
Hi,
We have a requirement to do passwordless entry from one user to a different user on the same AIX server using ssh keys.
Can some one help me with this?
Thanks in advance,
Panditt (3 Replies)
Discussion started by: deshaipet
3 Replies
8. Shell Programming and Scripting
Hello Unix scripters,
I have created a small tool that i can distribute to users to check whether they have passwordless login to a list of servers.
The problem in my code below is if user do not have the passwordless login yet, it will prompt them with a password login and my message below... (2 Replies)
Discussion started by: ryandegreat25
2 Replies
9. Red Hat
Hi
I am exactly according to this link
CentOS 6 - Apache httpd - Enable Userdir : Server World
I Enabled userDirectory
Server version: Apache/2.2.15
CentOS release 6.8 (Final)
But Iget this Error
Forbidden
You don't have permission to access /~mn/index.html on this server
Goal... (2 Replies)
Discussion started by: mnnn
2 Replies
10. UNIX for Advanced & Expert Users
Hello Folks,
I lost touch in ssh key gen topics.
I am in need of ssh to a server without password, kindly help me in configuring.
I have two servers,
server1 with user name apha & server1 with user name beta.
I need to ssh to the server2 from server1 with respective users,
Manually i... (3 Replies)
Discussion started by: Thala
3 Replies
LEARN ABOUT OSF1
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)