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Full Discussion: Find Argv[i] in /bin and /sbin
Top Forums Programming Find Argv[i] in /bin and /sbin Post 303036617 by realpath_issue on Thursday 4th of July 2019 07:24:28 PM
Old 07-04-2019
I was unaware of these functions and will definitely take a look at those manpages, thank you so much


Edit:


Oh, I apologize but there seems to be some confusion. What this does is it checks /bin and /sbin to see if the program(s) given are found. So say I run


Code:
check echo

it will look in /bin and /sbin to see if echo is found. If found it will say "found" otherwise it will say "not found". Now my current code has an issue that I can't find a solution for


Code:
#include <stdio.h>
#include <sys/stat.h>

#include <dirent.h>

int main(int argc, char *argv[])
{
        struct dirent *de;
        DIR *dr = opendir("/bin"); /* directory to open */

        short i;
        struct stat program;

        if (dr == NULL) {
                printf("directory could not be opened");
                return 0;
        }

        while ((de = readdir(dr)) != NULL) {
                for (i = 1; i < argc; i++) {

                        if (stat(argv[i], &program) == 0) {
                                printf("found\n");
                                closedir(dr);
                        }

                        else {
                                printf("not found\n");
                                closedir(dr);
                        }
                }
        }
}

stat is checking the current working directory and not /bin, how do I have it look at /bin?


I am also trying with strcmp() and I can't seem to get that working either:


Code:
#include <stdio.h>
#include <sys/stat.h>

#include <string.h>
#include <dirent.h>

int main(int argc, char *argv[])
{
        struct dirent *de;
        DIR *dr = opendir("/bin"); /* directory to open */

        short i;
        struct stat program;

        if (dr == NULL) {
                printf("directory could not be opened");
                return 0;
        }

        while ((de = readdir(dr)) != NULL) {
                for (i = 1; i < argc; i++) {

                        if (strcmp(de->d_name, argv[i]) == 0) {
                                printf("found\n");
                                closedir(dr);
                        }

                        else {
                                printf("not found\n");
                                closedir(dr);
                        }
                }
        }
}

Last edited by realpath_issue; 07-04-2019 at 09:37 PM.. Reason: added details
 

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LEARN ABOUT SUNOS

endusershell

getusershell(3C)					   Standard C Library Functions 					  getusershell(3C)

NAME

       getusershell, setusershell, endusershell - get legal user shells

SYNOPSIS

       #include <unistd.h>

       char *getusershell(void);

       void setusershell(void);

       void endusershell(void);

DESCRIPTION

       The  getusershell()  function  returns  a  pointer  to  a  legal  user  shell  as defined by the system manager in the file /etc/shells. If
       /etc/shells does not exist, the following locations of the standard system shells are used in its place:

       /bin/bash		  /bin/csh
       /bin/jsh 		  /bin/ksh
       /bin/pfcsh		  /bin/pfksh
       /bin/pfsh		  /bin/sh
       /bin/tcsh		  /bin/zsh
       /sbin/jsh		  /sbin/pfsh
       /sbin/sh 		  /usr/bin/bash
       /usr/bin/csh		  /usr/bin/jsh
       /usr/bin/ksh		  /usr/bin/pfcsh
       /usr/bin/pfksh		  /usr/bin/pfsh
       /usr/bin/sh		  /usr/bin/tcsh
       /usr/bin/zsh		  /usr/xpg4/bin/sh

       The getusershell() function opens the file /etc/shells, if it exists, and returns the next entry in the list of shells.

       The setusershell() function rewinds the file or the list.

       The endusershell() function closes the file, frees any memory used by getusershell() and setusershell(), and rewinds the file /etc/shells.

RETURN VALUES

       The getusershell() function returns a null pointer on EOF.

BUGS

       All information is contained in memory that may be freed with a call to endusershell(), so it must be copied if it is to be saved.

SunOS 5.10							    30 Aug 2004 						  getusershell(3C)
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