hell & mathematics Post: 302199432

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

mathematics operations in unix

Hello guys! Can say me anybody about operatios with unix, I don't to make operations, only inside in a variable, like this #y=4 #x=2 #let z=$y-$x #echo $z # 2 but I can't to make mathematical operations with decimal like this #y=3.2 #x=1.5 #let z=$y-$x #echo $z # 3 this...

2. UNIX for Dummies Questions & Answers

mathematics in shell script

Hi Friends, I am new to shell scripting and a trying to work this out. I have a variable called $number. The value in this variable is 10 I want to display $number - 2 in a mail. The result would be 8 eg. mail -s 'subject' user <<eof the result of your calculation is $number - 2...

3. UNIX for Dummies Questions & Answers

rpm hell!

I've just installed redhat 6.2 on one of my systems and am trying to install the gcc c compiler after downloading an rpm from the redhat site. The damn thing gives me: only major numbers <= 3 are supported by this version of RPM what do I do, it does the same with the latest rpm of php ...

4. Shell Programming and Scripting

hell and sqlite

Hi everyone, I have a requirement that requires me to fill an sqlite database with 100,000 entries (no duplicates). I will start out by giving the command that will insert the values necessary to populate the database: # sqlite /var/local/database/dblist "insert into list...

5. UNIX for Dummies Questions & Answers

Confussed as hell

:eek:

6. Shell Programming and Scripting

Which is the best way/command to do mathematics in UNIX scripting?

Hello all! I used to use expr for doing simple mathematics, but has a main advantage and a main disadvantage: The advantage is that it can take variables for numbers (e.g.{1}: echo "Give me first" read lol echo "Give other" read lil sum=`expr $lol + $lil` echo "The sum of $lol and $lil =...

7. Shell Programming and Scripting

quoting hell - help needed!!

I am writing a bash script to automate the installation of web environment on a base install of Fedora. And I'm at the limit of my last nerve and my bash skills. My brain is screaming at me: "Give up and use perl", but I am trying to stick to bash since the script will modify the perl environment...

8. What is on Your Mind?

Forum Trivial Pursuit - New Computer Science and Mathematics Trivia for UNIX.com

I have added a new experimental "Computer Science and Mathematics Trivia - True or False" section in the discussions, currently under the tags box. In the future, I plan to Expand this feature to add more trivia categories from math, science and technology. Keep track of correct and...

LEARN ABOUT CENTOS

ffcfstress

ffcfstress(1)						      General Commands Manual						     ffcfstress(1)

NAME

       ffcfstress - constant force stress test for force-feedback devices

SYNOPSIS

       ffcfstress [-d <device>] [-u <update rate>] [-f <frequency>] [-a <amplitude>] [-s <strength>] [-x <axis>] [-A] [-o]

DESCRIPTION

       ffcfstress  stress  tests  constant non-enveloped forces on a force feedback device.  It simulates a moving spring force by applying a fre-
       quently updated constant force effect.

       Beware, the stress test may damage your device!

OPTIONS

       At least one option is required.

       -d <device>
	      The device to test (by default /dev/input/event0).

       -u <update rate>
	      The update rate in Hz (25 by default).

       -f <frequency>
	      The spring center motion frequency in Hz (0.1 by default).

       -a <amplitude>
	      The spring center motion amplitude, between 0.0 and 1.0 (1.0 by default).

       -s <strength>
	      The spring strength factor (1.0 by default).

       -x <axis>
	      absolute axis to test (default: 0)
	      [0 = X, 1 = Y, 2 = Z, 3 = RX, 4 = RY, 5 = RZ, 6 = WHEEL]

       -A     switch off auto-centering

       -o     Dummy option, useful when all defaults should be used.

SEE ALSO

       ffmvforce(1), fftest(1), jstest(1).

AUTHOR

       ffcfstress was written by Oliver Hamann.

       This manual page was written by Stephen Kitt <steve@sk2.org>, for the Debian GNU/Linux system (but may be used by  others).   It  was  last
       modified for ffcfstress dated February 15, 2002.

ffcfstress							   March 8, 2009						     ffcfstress(1)