Sponsored Content
Full Discussion: Bash squares and exponents
Top Forums Shell Programming and Scripting Bash squares and exponents Post 302204432 by jim mcnamara on Wednesday 11th of June 2008 03:05:17 PM
Old 06-11-2008
bash v 2.02 & up has the ** operator which is exponentiation
Code:
i=2
var=2**(5+$i)

 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

how to make your bash script run on a machine with csh and bash

hi, i have a script that runs on bash and would like to run it on a machine that has csh and bash. the default setting on that machine is csh. i dont want to change my code to run it with a csh shell. is there any way i can run the script (written in bash) on this machine? in other words is there... (3 Replies)
Discussion started by: npatwardhan
3 Replies

2. UNIX and Linux Applications

Grep Exponents

I cannot figure out how to grep for an exponent in a file. Any help is greatly appreciated. (1 Reply)
Discussion started by: onshore
1 Replies

3. UNIX for Dummies Questions & Answers

Exponents

Hi! I have a set of numbers like this 1192.0 0.219E+00 1192.0 -0.446E-02 1192.0 0.924E-01 1192.0 -0.306E-01 1192.0 0.105E-03 1192.0 0.819E-01 Is there an easy way (with awk maybe?) to make all numbers in the second column have the same exponent. Thanks! (1 Reply)
Discussion started by: cosmologist
1 Replies

4. Shell Programming and Scripting

Squares on a chessboard calculation

Hi All, Just curious if the following formula is possible within a shell script: n x (n + 1) x (2n + 1) ______________________ 6 so far im just using a simple expression but need to implement the above. Many thanks in advance #!/bin/sh echo "\n" echo -------- Squares... (5 Replies)
Discussion started by: sammclean23
5 Replies

5. Shell Programming and Scripting

Squares in saved code

can you help i am merging 2 files together and saving to a third file with awk and its working with this code awk 'OFS="";NR==FNR{a=$0;next} {print a,"\n","\b",$0}' file1 file2 > file3the problem is in file3 when its saved i get a small square at the start of every 2nd line (see picture) ... (6 Replies)
Discussion started by: bob123
6 Replies

6. Shell Programming and Scripting

Bash to select text and apply it to a selected file in bash

In the bash below I am asking the user for a panel and reading that into bed. Then asking the user for a file and reading that into file1.Is the grep in bold the correct way to apply the selected panel to the file? I am getting a syntax error. Thank you :) ... (4 Replies)
Discussion started by: cmccabe
4 Replies

7. Shell Programming and Scripting

How to run several bash commands put in bash command line?

How to run several bash commands put in bash command line without needing and requiring a script file. Because I'm actually a windows guy and new here so for illustration is sort of : $ bash "echo ${PATH} & echo have a nice day!" will do output, for example:... (4 Replies)
Discussion started by: abdulbadii
4 Replies

8. Shell Programming and Scripting

Different behavior between bash shell and bash script for cmd

So I'm trying to pass certain json elements as env vars and use them later on in a script. Sample json: JSON='{ "Element1": "file-123456", "Element2": "Name, of, company written in, a very weird way", "Element3": "path/to/some/file.txt", }' (part of the) script: for s... (5 Replies)
Discussion started by: da1
5 Replies

9. UNIX for Beginners Questions & Answers

In Bash shell - the ps -ef shows only the /bin/bash but the script name is not displayed

In Bash shell - the ps -ef shows only the /bin/bash but the script name is not displayed ? Is there any way to get the script names for the process command ? --- Post updated at 08:39 AM --- in KSH (Korn Shell), my command output shows the script names but when run in the Bash Shell... (3 Replies)
Discussion started by: i4ismail
3 Replies
LIBBASH(7)							  libbash Manual							LIBBASH(7)

NAME
libbash -- A bash shared libraries package. DESCRIPTION
libbash is a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may want to load and use in scripts of your own. It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries. Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1). A bash shared library that can be loaded using ldbash(1) must answer 4 requirments: 1. It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash). 2. It must contain a line that begins with '#EXPORT='. That line will contain (after the '=') a list of functions that the library exports. I.e. all the function that will be usable after loading that library will be listed in that line. 3. It must contain a line that begins with '#REQUIRE='. That line will contain (after the '=') a list of bash libraries that are required for our library. I.e. every bash library that is in use in our bash library must be listed there. 4. The library must be listed (For more information, see ldbashconfig(8)). Basic guidelines for writing library of your own: 1. Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions. 2. Try to declare all variables intended for internal use as local. 3. Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with: __<library_name>_ For example, internal function myfoosort of hashstash library should be named as __hashstash_myfoosort This helps to avoid conflicts in global name space when using libraries that come from different vendors. 4. See html manual for full version of this guide. AUTHORS
Hai Zaar <haizaar@haizaar.com> Gil Ran <ril@ran4.net> SEE ALSO
ldbash(1), ldbashconfig(8), getopts(1), hashstash(1) colors(1) messages(1) urlcoding(1) locks(1) Linux Epoch Linux
All times are GMT -4. The time now is 06:19 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy