04-09-2011
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello,
Can you explain why in the first 2 commands the awk does not print anything? Is it looking of a specific format ?
Thanks.
$ echo 12a3 | awk '($1>=2) {print $1}' # prints nothing
$ echo 123a | awk '($1>=2) {print $1}' # prints nothing
$ echo a123 | awk '($1>=2) {print $1}'
a123... (1 Reply)
Discussion started by: majormark
1 Replies
2. Shell Programming and Scripting
I do not know how to do this unless I use a bunch of if statements. I need a script to replace numbers in each record in a file. I am really getting tangled in this web.
If a fieldA (19 positions) is greater than 14 digits, I have to change the data (resulting fieldA is fixed 19 postions).
If... (5 Replies)
Discussion started by: ski
5 Replies
3. Shell Programming and Scripting
Hi Everyone,
# cat 1
1;2;3;4;5;6
1;2;3;4;5;
# awk -F ";" '$5 == "5"' 1
1;2;3;4;5;6
1;2;3;4;5;
but the output is should be just "1;2;3;4;5;6" means 1st condition: $5 is 5; 2nd condition: $6 is not empty, please advice. Thanks (2 Replies)
Discussion started by: jimmy_y
2 Replies
4. Shell Programming and Scripting
Hi there,
I wanna define a variable 'tempbase'. Therefore I read a text file "base.out". "base.out" contains a list with four columns. 'tempbase' is the 4th entry in the line, where the first entry is equal to the predefined variable $orb1 and the second entry is equal to $orb2. I wrote the code... (2 Replies)
Discussion started by: friend
2 Replies
5. Shell Programming and Scripting
Hi there, here is my command
ssh host.local "/path/to/my/perscript/hostconfig.pl -s $HOST -d |awk '{if (\$4 > 120)print \"My error message\";exit}{s=0; for (i=1; i<=NF; i++) s++; if(s == 13) print \$3}'"
The problem is if conditional 1 is met (i.e $4 > 120), i don't see "My error message", the... (5 Replies)
Discussion started by: urello
5 Replies
6. Shell Programming and Scripting
Hi All,
I have a file with below contents.
"en2"/10.185.81.0:cluster_interconnect,"en5"/10.185.81.0:cluster_interconnect,"en6"/169.181.146.0:public
I want to take the interface name from the file and convert it as ipaddress using ifconfig command get the output like below
en6 ->... (2 Replies)
Discussion started by: kamauv234
2 Replies
7. Shell Programming and Scripting
I'm having a problem pulling UID's from data. The data outputs a user's UID in one of three ways:
1. Error User user_name already assigned with <UID>
2. Success <UID> reserved for user_name
3. <a load of crap because there was a db failure yet somehow the UID is still in there>
I typically... (5 Replies)
Discussion started by: MaindotC
5 Replies
8. Shell Programming and Scripting
Hello Friends,
I need to find some CDRs in production servers whose 1st field value and 2nd field value = 1 and 11th looks like 45.123... where there are more than 3 digits after comma.so i wrote a one liner, something like below but does not work, however when i used first and second conditions... (8 Replies)
Discussion started by: EAGL€
8 Replies
9. Shell Programming and Scripting
I am posting this info only after having confirmed the fact that there are no prior posts avialable that serves my purpose .
In my Korn Shell script file , there are two shell variables which needs to be tested within a single if statement .
Sample variables :
$var1 and $var2
The check... (8 Replies)
Discussion started by: kumarjt
8 Replies
10. Shell Programming and Scripting
awk 'BEGIN{
if('"$CATE"'<'"${WARN}"')
printf ("%s", "'"`Kfunc "" ; break`"'")
else if (('"${CATE}"'>='"${WARN}"') && ('"${CATE}"'<'"${CRIT}"'))
printf ("%s", "'"`Wfunc ""; break`"'")
else if ('"${CATE}"'>='"${CRIT}"')
printf... (6 Replies)
Discussion started by: SkySmart
6 Replies
LEARN ABOUT PHP
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)