Sponsored Content
Top Forums Shell Programming and Scripting BASH arrays and variables of variables in C++ Post 302877458 by Akshay Hegde on Sunday 1st of December 2013 01:28:06 PM
Old 12-01-2013
@ wisecracker I think following problem he is facing, in preprocessor directives


Code:
$ cat test.cpp

// working
#define SHELLSCRIPT1 "\
#/bin/bash \n\
echo \"hello\" \n\
"

// Not working
#define test1 "\
#/bin/bash \n\
array=(a1 a2 a3) \n \
echo ${array[*]} \n \
"

#include <iostream>
#include <cstdlib>
using namespace std;
int main ()
{
// working
cout <<system(SHELLSCRIPT1);

// whereas this is not working
cout <<system(test1);

return 0;
}

$ g++ test.cpp

$ ./a.out 
hello
sh: 2: Syntax error: "(" unexpected

 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Bash variables

Ummm can anybody help me with this one? Its prob quite simple. I bascially have a file name say J1x2x3x7.dat Im using the file name as a variable in a bash script. Want I want to do is extract most of the file name and make it a new variable expect with say one of the number now a... (2 Replies)
Discussion started by: RichieFondel
2 Replies

2. Programming

How to convert byteArray variables to HexaString variables for Linux?

Hello everybody, I am having problem in converting byte array variables to Hexa String variables for Linux. I have done, converting byte array variables to Hexa String variables for Windows but same function doesn't work for linux. Is there any difference in OS ? The code for Windows is given... (2 Replies)
Discussion started by: ritesh_163
2 Replies

3. UNIX for Dummies Questions & Answers

Problem assigning variables to arrays

Hi All, I have a problem assigning variables to script.I have a script in which i have a while loop now i have to assign some values obtained to an array which will be used later in the script.Can anyone help how to do that. At present my scrot looks like: co=0 pco=0 co=`cat /tmp/highcpu... (4 Replies)
Discussion started by: usha rao
4 Replies

4. UNIX for Dummies Questions & Answers

awk arrays and variables

I have two arrays values aname = first aname = last I would like to assign a variable to both arrays seperated by a comma fname=(aname","aname) that example does not work but that's something I would like to accomplish. Is it possible to assign a printf output to a variable. ... (2 Replies)
Discussion started by: Morph797
2 Replies

5. UNIX for Dummies Questions & Answers

File Field Replacement, Assigning Fields to Variables, Lists/Arrays?

Okay, I've made threads on extracting fields and comparing strings in separate files in .csv's. I've written the following code with intentions of learning more. I just want this one question answered: How can I assign fields from a file(comma separated) to variables? My goal is to check... (0 Replies)
Discussion started by: chickeneaterguy
0 Replies

6. Shell Programming and Scripting

Creating variables in bash

I am writing some scripts using bash and am wondering if there is a better way to perform the following set of formatting variables. s1=" " s2=" " s3=" " s4=" " s5=" " s6=" " s7=" " s8=" " frmt_titl="${bYl}%s${nClor}\n" frmt1_titl="${s1}$frmt_titl"... (10 Replies)
Discussion started by: kristinu
10 Replies

7. Shell Programming and Scripting

functions and variables in bash

I have a bash script with some functions as below and am wondering if I can use the variables declared in setup in the other functions and in the rest of the bash script. setup(){ none=0; low=1; medium=2; high=3; debug=4 var1="red" var2="fred" } create_basemap() { ... (7 Replies)
Discussion started by: kristinu
7 Replies

8. Shell Programming and Scripting

Running a script with multiple variables like 25 variables.

Hi All, i have a requirement where i have to run a script with at least 25 arguements and position of arguements can also change. the unapropriate way is like below. can we achieve this in more good and precise way?? #!/bin/ksh ##script is sample.ksh age=$1 gender=$2 class=$3 . . .... (3 Replies)
Discussion started by: Lakshman_Gupta
3 Replies

9. Shell Programming and Scripting

Passing awk variables to bash variables

Trying to do so echo "111:222:333" |awk -F: '{system("export TESTO=" $2)}'But it doesn't work (2 Replies)
Discussion started by: urello
2 Replies
echo(1B)					     SunOS/BSD Compatibility Package Commands						  echo(1B)

NAME
echo - echo arguments to standard output SYNOPSIS
/usr/ucb/echo [-n] [argument] DESCRIPTION
echo writes its arguments, separated by BLANKs and terminated by a NEWLINE, to the standard output. echo is useful for producing diagnostics in command files and for sending known data into a pipe, and for displaying the contents of envi- ronment variables. For example, you can use echo to determine how many subdirectories below the root directory (/) is your current directory, as follows: o echo your current-working-directory's full pathname o pipe the output through tr to translate the path's embedded slash-characters into space-characters o pipe that output through wc -w for a count of the names in your path. example% /usr/bin/echo "echo $PWD | tr '/' ' ' | wc -w" See tr(1) and wc(1) for their functionality. The shells csh(1), ksh(1), and sh(1), each have an echo built-in command, which, by default, will have precedence, and will be invoked if the user calls echo without a full pathname. /usr/ucb/echo and csh's echo() have an -n option, but do not understand back-slashed escape characters. sh's echo(), ksh's echo(), and /usr/bin/echo, on the other hand, understand the black-slashed escape characters, and ksh's echo() also understands a as the audible bell character; however, these commands do not have an -n option. OPTIONS
-n Do not add the NEWLINE to the output. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
csh(1), echo(1), ksh(1), sh(1), tr(1), wc(1), attributes(5) NOTES
The -n option is a transition aid for BSD applications, and may not be supported in future releases. SunOS 5.10 3 Aug 1994 echo(1B)
All times are GMT -4. The time now is 02:38 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy