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Full Discussion: Putting bash script in C program
Top Forums Programming Putting bash script in C program Post 302770525 by SkySmart on Saturday 16th of February 2013 11:08:31 PM
Old 02-17-2013
Putting bash script in C program
suppose i have a bash script:
Code:
#!/bin/bash

echo "hello"
echo "how are you"
echo "today"

how can i put the entire script above into a basic c program?

i do not want to translate the bash code to a c code. i want C to run the bash code. is this possible?

i found this on the internet but i'm not sure i understand it:


Code:
#include <stdio.h>
#include <stdlib.h>
 
#define SHELLSCRIPT "\
for ((i=0 ; i < 10 ; i++))\n\
do\n\
echo \"Count: $i\"\n\
done\n\
"
 
int main()
{
    puts("Will execute sh with the following script :");
    puts(SHELLSCRIPT);
    puts("Starting now:");
    system(SHELLSCRIPT);
    return 0;
}

i'm looking for a C program where i can just insert the bash code into it and have it run. something like this:

Code:
#include <stdio.h>
#include <stdlib.h>

int main()
{
    puts("Will execute sh with the following script :");
    puts(#!/bin/bash
    echo "hello"
    echo "how are you"
    echo "today");
    puts("Starting now:");
    system(SHELLSCRIPT);
    return 0;
}

 

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LEARN ABOUT LINUX

rbash

RBASH(1)						      General Commands Manual							  RBASH(1)

NAME

       rbash - restricted bash, see bash(1)

RESTRICTED SHELL

       If  bash  is  started with the name rbash, or the -r option is supplied at invocation, the shell becomes restricted.  A restricted shell is
       used to set up an environment more controlled than the standard shell.  It behaves identically to bash with the exception that the  follow-
       ing are disallowed or not performed:

       o      changing directories with cd

       o      setting or unsetting the values of SHELL, PATH, ENV, or BASH_ENV

       o      specifying command names containing /

       o      specifying a file name containing a / as an argument to the .  builtin command

       o      specifying a filename containing a slash as an argument to the -p option to the hash builtin command

       o      importing function definitions from the shell environment at startup

       o      parsing the value of SHELLOPTS from the shell environment at startup

       o      redirecting output using the >, >|, <>, >&, &>, and >> redirection operators

       o      using the exec builtin command to replace the shell with another command

       o      adding or deleting builtin commands with the -f and -d options to the enable builtin command

       o      using the enable builtin command to enable disabled shell builtins

       o      specifying the -p option to the command builtin command

       o      turning off restricted mode with set +r or set +o restricted.

       These restrictions are enforced after any startup files are read.

       When a command that is found to be a shell script is executed, rbash turns off any restrictions in the shell spawned to execute the script.

SEE ALSO

       bash(1)

GNU Bash-4.0							    2004 Apr 20 							  RBASH(1)
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