Hello All,
It has been a loooooooooooong time since I had last used sed but decided to use it for a simple task I have .
My goal is to use sed to read variables from a flat file then use those same variables in order to make some subsitutions. However what I am finding is that when the... (1 Reply)
I always kind of wondered this but I have a variable that I want to use in a search and replace. Basically I want to search a file for the string in my variable and replace it with something fixed but I'm unsure of the variable rule in sed. Here's generally what I have:
sed 's/$name/newname/g'... (15 Replies)
Hi guys,
I'm trying to loop through a number of files that is set by whatever is in a field.
eg.
The idea is to split FILELIST down into fields, it could contain 1 - 999 fields and it's bar delimited.
I thought simple, count the number of fields in the field and then loop... (1 Reply)
good afternoon forums.
i have a problem that ive been trying to work out all morning and cant seem to get my head around it.
what i have in my script is individual letters saved in different variables. so if the word unix was saved then 'u' would be stored in the variable 'wvar1' 'n' in 'wvar2'... (7 Replies)
I'm an experienced programmer that is new to shell scripting. I'm putting together a shell script that erases all files of a certain age. These files are in directories provided on lines of a file that is provided via command line argument and takes any errors(permissions, etc) and emails them to a... (3 Replies)
hi, i need some help, the situation is this
1-file of variable enviroments
DIR1=/tmp
DIR2=otherdir/mydir
2-file of list of files (all the names references whic variables of first point)
${DIR1}/${DIR2}/onefile
Well now i create a shell script whic... (5 Replies)
I'm writing a script that'll send a time-stamp to my backup server. I create a file with the name of the current date, send it to my server with scp and rm the file from the local computer.
Individually these commands work fine and with a set name the expect scripts also work fine. The problem... (0 Replies)
I have a simple shell script to read create a mysql database as a particular user. Right now, I have the password set as a variable to make sure someone does not mistype the password. I want to take the hard coded password out of the file and make the user input the password twice to make they... (2 Replies)
Hi there
As part of a larger script I need to put the output of an ls into a variable which has an incremental number.
ie
nathan@nathan-Vostro-1700:~$ eval 'proc'$val='`ls -ld /proc/9467`'
nathan@nathan-Vostro-1700:~$ echo $proc0
dr-xr-xr-x 8 nathan nathan 0 2012-05-02 09:21... (3 Replies)
To all geeks,
What I want to achieve:
1. Accept two filenames from user and store the filenames in two variables (FILE1 and FILE2)
2. Check if files exisits. If doesn't, then exit
3. If files exist, look for a particular string in both files
4. If the string exists, then change the... (8 Replies)
Discussion started by: Deepak Tulsani
8 Replies
LEARN ABOUT CENTOS
complex
Complex(3) OCaml library Complex(3)NAME
Complex - Complex numbers.
Module
Module Complex
Documentation
Module Complex
: sig end
Complex numbers.
This module provides arithmetic operations on complex numbers. Complex numbers are represented by their real and imaginary parts (carte-
sian representation). Each part is represented by a double-precision floating-point number (type float ).
type t = {
re : float ;
im : float ;
}
The type of complex numbers. re is the real part and im the imaginary part.
val zero : t
The complex number 0 .
val one : t
The complex number 1 .
val i : t
The complex number i .
val neg : t -> t
Unary negation.
val conj : t -> t
Conjugate: given the complex x + i.y , returns x - i.y .
val add : t -> t -> t
Addition
val sub : t -> t -> t
Subtraction
val mul : t -> t -> t
Multiplication
val inv : t -> t
Multiplicative inverse ( 1/z ).
val div : t -> t -> t
Division
val sqrt : t -> t
Square root. The result x + i.y is such that x > 0 or x = 0 and y >= 0 . This function has a discontinuity along the negative real axis.
val norm2 : t -> float
Norm squared: given x + i.y , returns x^2 + y^2 .
val norm : t -> float
Norm: given x + i.y , returns sqrt(x^2 + y^2) .
val arg : t -> float
Argument. The argument of a complex number is the angle in the complex plane between the positive real axis and a line passing through
zero and the number. This angle ranges from -pi to pi . This function has a discontinuity along the negative real axis.
val polar : float -> float -> t
polar norm arg returns the complex having norm norm and argument arg .
val exp : t -> t
Exponentiation. exp z returns e to the z power.
val log : t -> t
Natural logarithm (in base e ).
val pow : t -> t -> t
Power function. pow z1 z2 returns z1 to the z2 power.
OCamldoc 2014-06-09 Complex(3)