I suspected something such, as the sh executable is separate, bigger and newer.
I can never sort out the culture wars between POSIX, AT&T SVR?, LINUX, GNU, BSD and all the prop. players: AIX, Solaris, HP-UX, ???? I know they keep changing the regex, so I have to worry about which library path which program runs under. I want my \< and \> back!
You also missed my point about k vs $k inside (( )). ((k=k+3)) works, (($k=$k+3)) does not since K gets substituted before anything starts calculating, so you end up trying to assign the value of 3 or something. Just plain variable names don't ever need a $ inside a (( )) expression anyway, why make them more complicated?
Well k is not guaranteed to behave the same way as $k inside an integer expression. It depends on the content of k. Example:
Returning to original question... Here is one way to get a number...
Code:
$ cat getn
#! /usr/bin/ksh
printf "Enter a number - "
read number
printf "you entered %d \n" $number
exit 0
$
$
$ ./getn
Enter a number - 77
you entered 77
$
I think you should be able to expand it to get 2 numbers. And you seem to have a complete discussion on adding them.
Doesn't get it outside, k=$(( $k + 3 )), so that is not an issue.
I like 11 as the right answer, so $ is necessary? Mult takes precedence over + ? Or left to right, it should be 15. Ugly! I always use paren. no priority applicable.
I do not know shell scripting. But at work place, I have got an in and out shell scripting task. I just need to understand a very big script. Is there any tool in which I can place the script and it can tell me the meaning of the whole script? (3 Replies)
I'm having trouble trying to create a BASH shell script.
I want the user to input a command "cat file_name.c" and then the shell script will delete all comments "/* */" from file_name.c else exit.
So far I have this:
#!/bin/bash
read "cat file" // User will input command cat... (7 Replies)
Hello All,
I am setting up a cron job, where i am calling a shell script to make few builds. I got struck at a point, need some expert inputs to proceed further.
The script is categorized in 5 parts and in the last part while building software it asks for few questions like:-
1. Build mode... (4 Replies)
i am new to shell scripting and stuck at one place in my program.
i am reading data from one structured file and extracting some data from particular lines and then writing into the output file. In that reading input file line by line from while loop.
while read line
do
rectype=line... (7 Replies)
#! /bin/sh
abcd = "Hello world"
if
then
echo $abcd
fi
i got error message that
line3 : abcd: command not found
line5 : [0: command not found
line5 : [1: command not found
i have no idea why i got this message. Can some one help me ??? (6 Replies)
Hi,
Actually i have written one test.sh (shell program) in bash.
Here i have a variables $a which stored the value package1.
Now I want to write a regular expression inside the if command that "if $a variable contains letter p in the begining of the value package1 then it is coming true.... (5 Replies)
Can any1 please help me...
i'm really lost in using bash shell scripting...
and i got to hand this up on monday...
please anyone teach me how to do this assignment...
Please use basic things because i just learn the program only... thanks
... (1 Reply)
Hi,
i am new to UNIX. I have couple of basic questions.
1. Is the syntax for BASH shell programming same in the LINUX and SUN SOLARIS operating systems?
2. I have to work on BASH shell programming in SUN SOLARIS operating system. I am going through the documentation from the following... (4 Replies)
04-12-2011
