Chirag Gohel: Shell Script Examples (Problem & Solution) Problem : How to write shell script that will add two nos, which are supplied as command line argument, and if this two nos are not given show error and its usage. Solution : if [ $# -ne 2 ] then echo "Usage - $0 x y" echo " Where x and y are two nos for
Calculating Averages | *nix Shell I ran this script on 10’s of thousands of numbers and it takes a *long* time. That’s because you spawn an expr not once but twice for every number you average. Here is the script with your expr statement changed to native bash arithmetic expansion. #!/bin
bash - How to calculate values in a shell script? - Unix & Linux Stack Exchange I run this command in the terminal: grep "bla bla blah" blah* | echo "Blah: $(wc -l) / $(ls | wc -l) * 100" And I get this output: Blah: 44 / 89 * 100 What I expect to see: 49.4 Is there... ... First of all, you've not specified your shell. I'll presume y
Ch 11 -- Korn Shell - Department of Mathematics, IIT Bombay UNIX Unleashed, System Administrator's Edition - 11 - Korn Shell by John Valley and Chris Johnson Chapter 8, "What Is a Shell," introduced the basics of UNIX shells, and Chapter 9, "The Bourne Shell," discussed the Bourne shell in particular. This chapter
Performing Math calculation in Bash | Shell Tips ! 14 Jun 2010 ... I use math in bash scripts a lot, from simple crontab reports to Nagios monitoring plugins... Here is few small examples on how to do some ...
Arithmetic in Bash - Linux - About.com How to Add Calculations to a Bash Script .... Besides arithmetic evaluation, the Bash shell provides other programming constructs, such as for-loops, while-loops ...
shell - How to do integer & float calculations, in bash or other ... 14 Jun 2012 ... Also, what's the easiest way to do it just using bash for floating point, e.g. .... In the rc shell family, akanga is the one with arithmetic expansion:
Mathematical calculations in shellscript | Unix Linux Forums ... Hi want to do below mathematical calculations in shellscrip but it is not giving me the exact output.Please help me to solve this Code: ...
Calculating with Bash - Arabesque 12 Mar 2012 ... If you're at a terminal or writing a script and need to do some quick integer calculations, Bash offers arithmetic expansion with the $((. ... very useful is in calculating filesizes, since most of the time shell commands work in eit
Perform arithmetic operations - Linux Shell Scripting Tutorial - A ... 16 Aug 2010 ... You can perform math operations on Bash shell variables. The bash shell has built-in arithmetic option. You can also use external command ...
