linux - C — using chdir() function -

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i'm trying use chdir() function can't work out.

i'm reading user , find out if using "cd". error. doing wrong?

code:

    int * status=0;     char * buf = 0;     char arguments[2048];     buf = getcwd(buf,path_max);     printf("%s >",buf);      fgets(arguments,2048,stdin);      if( strncmp(arguments,"quit",4)==0 ){       printf("exit...\n");       break;     }     else if(strncmp(arguments,"cd",2)==0 ){         int ret;         printf("\ngot = %s\n",(arguments+2));         ret = chdir ((arguments+2));         if(ret!=0){           perror("error:");         }     }

if line being entered like:

cd xyzzy

then directory starts @ offset 3, not 2. in addition, fgets gives line newline character @ end you'll want remove well, such as:

if (strlen (line) > 0)     if (line[strlen (line) - 1] == '\n')         line[strlen (line) - 1] = '\0';

you should tokenising input little more intelligently, shell bash (for example) has rather complex rules.


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