equation calculation on Unix Post: 302096586

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Hi, Is there a way to evaluate an equation contained in a string within an AWK script? For example: A = "(5*2)-1" (this equation is read from a file and varies line by line) In this example, I can't see any way to get an answer of 9 unless I do: cmd = "awk 'BEGIN{print "A"}'" cmd |...

2. Shell Programming and Scripting

calculation

Hi, I am in ksh88 I am trying to get the result of the calculation using 3 variables: TOTAL CAPACITY and get the following error: $DB_CAPACITY=(( $DB_SIZE * 100 / $TOTAL )) ksh: syntax error: `((' unexpected I cannot figure out what am I doing wrong... Thanks for any help -A

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Perl - maths equation - need help

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4. High Performance Computing

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I'm running a MPI program using a cluster of 4 machines(different machines of different processing power,cpu utilization etc.). I'm trying to balance the computation among the machine to get the minimum execution time for that. I tried to balance it by creating a threshold value by taking the load...

5. Shell Programming and Scripting

Calculation

Hi, i have a large file like this: Contig1 1 5 Contig1 2 4 Contig1 3 3 Contig1 4 5 Contig1 5 3 Contig1 6 4 Contig2 1 3 Contig2 2 7 Contig2 3 2 Contig2 4 9 Contig2 5 10 Contig2 6 3 Contig2 7 7 Contig2 8 2 Contig2 9 7 Contig2 10 5 contig1 2 4 contig1 3 3 contig1 4 5

6. Shell Programming and Scripting

Help with insert a value equation in bash script

HI All, I have a script in bash that i want that script will perform action When the size of a particular folder exceeds the 80%. Here is an example of script that result is exactly 80% : #!/bin/bash CHECK=$(df -h /var/log/syslog | grep '80%' | xargs echo | cut -d' ' -f5) if ];...

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Solving heat equation using crank-nicolsan scheme in FORTRAN

! The one-dimensional PDE for heat diffusion equation ! u_t=(D(u)u_x)_x + s where u(x,t) is the temperature, ! D(u) is the diffusivity and s(x,t) is a source term. ! Taking D(u)= 1 and s(x,t)=0 gives ! u_t= u_xx ! uniform one dimensional region |x|<1 for t>0 ! uniform mesh size delta x=0.1 !...

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9. Programming

E**(i*pi)=-1 or e**(j*pi)=-1, something I found out in Python using part of Eulers Identit equation.

Well guys and gals I have discovered after all these years that Python does complex numbers without the 'complex()' function or 'cmath' import. It is well known that Euler's Identity E**(i*pi)+1=0 so I decided to experiment Last login: Fri Dec 13 18:27:30 on ttys000 AMIGA:amiga~> python3.8...

LEARN ABOUT SUNOS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The  following  default	shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/pfcsh, /bin/pfksh, /bin/pfsh, /bin/sh,
       /bin/tcsh,  /bin/zsh,  /sbin/jsh,  /sbin/sh,  /usr/bin/bash,  /usr/bin/csh,  /usr/bin/jsh,  /usr/bin/ksh,  /usr/bin/pfcsh,  /usr/bin/pfksh,
       /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh. Note that /etc/shells overrides the default list.

       Invalid shells in /etc/shells may cause unexpected behavior (such as being unable to log in by way of ftp(1)).

FILES

       /etc/shells	       lists shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.10							    4 Jun 2001								 shells(4)