10-10-2006
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
How do I add a user to a group? And how do I determine the list of groups to add a user?
Solaris 10 newbie (1 Reply)
Discussion started by: peteythapitbull
1 Replies
2. AIX
Hello
A couple of weeks ago, I added a user to an AIX 5.3 system.
I go to add one today, and it appears that when creating a user in smit, I cannot see any groups.
No primary groups
No Group set
No Admin Groups
The /etc/group and etc/secuity/group files seem to be intact.
I did... (4 Replies)
Discussion started by: mhenryj
4 Replies
3. Shell Programming and Scripting
I have some groups and when i issue a command like
groups $LOGNAME
it displays in one line
rfautosys c2ru cash2
I want to fetch only group starting with c2 but when i grep i am getting full line. Can someone advise
on this please as how i can get output as c2ru? (2 Replies)
Discussion started by: gehlnar
2 Replies
4. Solaris
how to create 1000 users in 1 group (0 Replies)
Discussion started by: tirupathi
0 Replies
5. Solaris
1 user in member of 4 groups find file permissions and default group (1 Reply)
Discussion started by: tirupathi
1 Replies
6. Shell Programming and Scripting
I need some help with adding lines to file and substitute a pattern.
Ok I have a file:
#cat names.txt
name: John Doe
stationed: 1
name: Michael Sweets
stationed: 41
.
.
.
And would like to change it to:
name: John Doe
employed
permanently
stationed: 1-office (7 Replies)
Discussion started by: hemo21
7 Replies
7. UNIX for Dummies Questions & Answers
Must I be in a group? I am using Ubuntu and am the only user on my PC. I know how to change groups but do not see a way to not be in a group. Any help would be appreciated. (2 Replies)
Discussion started by: nthepines
2 Replies
8. Post Here to Contact Site Administrators and Moderators
Majority of the questions are pertaining file/string parsing w.r.t
sed
or
awk
It would be nice to have these two as their own sub category under shell-programming-scripting which can avoid lot of duplicate posts. (1 Reply)
Discussion started by: jville
1 Replies
9. Shell Programming and Scripting
Hi,
I am looking at a slightly different sorting problem and I am not sure how to do it in bash.
I have the following input:
0 ... (8 Replies)
Discussion started by: jamie_123
8 Replies
10. UNIX for Beginners Questions & Answers
I have an array in an external file, "array.txt", which contains:
char *testarray={"Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"};I want to be able to add an element to this array, and have that element display, whenever I call it, without having to recompile... (29 Replies)
Discussion started by: ignatius
29 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)