Using the C Shell, I'm building a script that will compute simple mathematical computations (addition, subtraction, multiplication, division). The user will enter two integers (operands) on the command line separated by the operation (operator) they wish to perform.
Example of the command line would be as follows: ./scriptname 5 minus 2
I have that part working perfectly. Where I'm running into a problem is the following:
1) If the any of the operands or operator are missing from the command line I want to print an error
2) If the user enters an invalid operator (not +, -, %, X) the script shall will print an error)
I've attached my script below. If you have any recommendations for the above two issues your help would be greatly appreciated. Thank you!
I have an extraordinary problem with a csh script.....(feel free to berate the use of this but I'm modifying an existing bunch of them)
Anyway, I have a master csh script which in turn calls a second csh script. This second csh script is below. Within this second script are two compiled C++... (1 Reply)
Hi everyone,
I have never wrote script in csh before, but I need to add only few lines to an existing one. I tried to use the bash standard syntax, and it did not work. So, I attempted to use csh syntax, and it is not working. Can someone help please:
switch ( $Return_Code )
case 0:... (3 Replies)
Ok I asked something similar earlier with no response, so maybe I didn't word it correctly. I'm new at this, so thank you for your help.
Here's what I have right now.
----------------------------
> cat MySourceFile
#!/bin/csh
echo "Please Enter Value For My_Env_Var:"
set answer = $<
... (1 Reply)
I'm having some trouble implementing a basic calculator using command line options. The script is supposed to take (multiple) arguments -a,-d,-m,-s for addition, multiplication, division, and subtraction. I'm pretty sure I know how to parse through the options with getopt(), but I have no idea... (17 Replies)
Hey I am brand new to this forum and scripting.
I have several documents (1000+) all formated exactly the same. Each document contains 97 lines. I want to pull 3 lines from the documents to populate a file. These 3 lines are line number 9, 24, and 58.
Ok my questions: Instead of using... (3 Replies)
Hey all,
I've only just started using UNIX coding on my Masters project, so am still learning!! The script I've been writing is literally just for me to get used to writing it and seeing what I can do with some data I've been given.
I'm trying to write a script, where the penultimate line... (2 Replies)
so just spit ballin here,
i was wondering if anybody knew how to make a chmod calculator script.
basically go to this website http://mistupid.com/internet/chmod.htm
i would like something like this that i can use in a terminal tho. so like i run the scrip and it ask for owner what... (1 Reply)
Hello, I'm in need with a little help for my script please this is the brief i need to complete which I haven't been able to do:
On option 7 stop the calculator
The calculator will keep running until option 7 is chosen. Any other option than 1-7 will generate an error message.
Pls any help... (1 Reply)
Hello, I have to make a calculator in shell script. But I get this error. Can someone help me please?
c.sh: 3: c.sh: i: not found
That's my code.
==========================================================================
#Calculator
i = "yes"
while
do
echo What operation... (2 Replies)
Discussion started by: KJN
2 Replies
LEARN ABOUT MOJAVE
echo
ECHO(1) BSD General Commands Manual ECHO(1)NAME
echo -- write arguments to the standard output
SYNOPSIS
echo [-n] [string ...]
DESCRIPTION
The echo utility writes any specified operands, separated by single blank (' ') characters and followed by a newline ('
') character, to the
standard output.
The following option is available:
-n Do not print the trailing newline character. This may also be achieved by appending 'c' to the end of the string, as is done by iBCS2
compatible systems. Note that this option as well as the effect of 'c' are implementation-defined in IEEE Std 1003.1-2001
(``POSIX.1'') as amended by Cor. 1-2002. Applications aiming for maximum portability are strongly encouraged to use printf(1) to sup-
press the newline character.
Some shells may provide a builtin echo command which is similar or identical to this utility. Most notably, the builtin echo in sh(1) does
not accept the -n option. Consult the builtin(1) manual page.
EXIT STATUS
The echo utility exits 0 on success, and >0 if an error occurs.
SEE ALSO builtin(1), csh(1), printf(1), sh(1)STANDARDS
The echo utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.
BSD April 12, 2003 BSD