11-02-2011
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
See the title. Originally wasn't going to type anything but I need a message of at least 10 characters! :cool: (2 Replies)
Discussion started by: deutchap6verse5
2 Replies
2. UNIX Desktop Questions & Answers
> #!/bin/bash
>
>
> echo "please enter your login ID"
>
> read login_id
>
>
> whileairmax_sk@yahoo.com (2 Replies)
Discussion started by: kim187
2 Replies
3. Fedora
Hey, I just wanted to know how one can write simple arithmetic like addition, subtraction, multiplication and division in shell-script. (14 Replies)
Discussion started by: #moveon
14 Replies
4. Shell Programming and Scripting
I am begining to learn bourne shell and as a practice I have written a script which when given the purchase price and percentage of discount calculates the savings.
I somehow cannot figure out why my script fails to do arthimatic calculation on real numbers.
Could anyone look at the script... (5 Replies)
Discussion started by: Tirmazi
5 Replies
5. Post Here to Contact Site Administrators and Moderators
page
unix com/answers-frequently-asked-questions/13785-yesterdays-date-date-arithmetic.html
Date Arithmetic with the Shell
has link of
www samag com/documents/s=8284/sam0307b/0307b.htm
which is no longer.
Is this the correct place to post this?:confused:
and I got message... (1 Reply)
Discussion started by: dgerman
1 Replies
6. Shell Programming and Scripting
Hello everybody,
I decided to take a Unix Introduction class and have never had experience with programming. Everything was fine until recently when the Prof. started shell scripting and he wants us to make a small script to add unlimited numbers from arguments and from standard input.
I... (1 Reply)
Discussion started by: Florinel76
1 Replies
7. Homework & Coursework Questions
Hello everybody,
I decided to take a Unix Introduction class and have never had experience with programming. Everything was fine until recently when the Prof. started shell scripting and he wants us to make a small script to add unlimited numbers from arguments and from standard input.
I... (8 Replies)
Discussion started by: Florinel76
8 Replies
8. Shell Programming and Scripting
hi,
I have a file with decimal/non-decimal values
$ cat b22
373 164 92 62 20 131 94 12 129 111 95 154 37 15 447 25 7.4 135 77 122 32 92 70 57 37 42 72 17 13 97 40 41 53 22 80 71 29 87 23 31 273 6.2 12K 43 44 45 22 11 7.7 13 18 173 36 20 18 13 56 67 104 53 5.4 241 19 13 3.8 38 14 31 329 16 155... (8 Replies)
Discussion started by: sam05121988
8 Replies
9. Shell Programming and Scripting
Hi,
I need a help with arithmetic calculations in my script. I have two variables: a=17; b=1712
I want to perform ($a/$b)*100 with two decimals in the result.
I tried with following:
res=$((100*a/b))
res=`echo "scale=2; $a / $b" | bc`
But I am not getting the decimal values.... (4 Replies)
Discussion started by: karumudi7
4 Replies
10. Shell Programming and Scripting
i am having a varialbe a , which is input to my file
i want to multiply this input with value .43, and assign it to variable b.
i tried it as below:
#!/bin/sh
a=$1
b=`expr $1\*0.43`
echo b=$b
error : expr: non-integer argument
Please tell me , how to do this.
Thanks (10 Replies)
Discussion started by: rishifrnds
10 Replies
LEARN ABOUT FREEBSD
pnmdepth
pnmdepth(1) General Commands Manual pnmdepth(1)
NAME
pnmdepth - change the maxval in a portable anymap
SYNOPSIS
pnmdepth newmaxval [pnmfile]
DESCRIPTION
Reads a portable anymap as input. Scales all the pixel values, and writes out the image with the new maxval. Scaling the colors down to a
smaller maxval will result in some loss of information.
Be careful of off-by-one errors when choosing the new maxval. For instance, if you want the color values to be five bits wide, use a max-
val of 31, not 32.
One important use of pnmdepth is to convert a new format 2-byte-per-sample PNM file to the older 1-byte-per-sample format. Before April
2000, essentially all raw (binary) format PNM files had a maxval less than 256 and one byte per sample, and many programs may rely on that.
If you specify a newmaxval less than 256, the resulting file should be readable by any program that worked with PNM files before April
2000.
SEE ALSO
pnm(5), ppmquant(1), ppmdither(1)
AUTHOR
Copyright (C) 1989, 1991 by Jef Poskanzer.
08 April 2000 pnmdepth(1)