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jftuga
Tux's lil' helper
Joined: 21 Jan 2004
Posts: 139
Location: Athens, GA
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 Posted: Sun May 30, 2004 4:01 pm Post subject: HOWTO: chmod permissions |
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To help users transition from -rwx-rwx--- style permissions to 0770 style permissions, I wrote a program that creates 4096 file wilth every single possible permission type, ranging from 0000 to 7777.
How to run:
| Code: |
Save the code as umask_test.c, then compile with:
gcc umask_test.c -o umask_test
mkdir test
cd test
../umask_test
ls -lr | less
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You will see that the first column permissions correspond to the octal value in the last column
Hope this helps someone.
-John
| Code: |
/* umask_test.c */
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(int argc, char *argv[]) {
int fp,loop;
char fname[128];
umask(0);
for(loop=0; loop < 4096; loop++) {
sprintf(fname,"%#o", loop);
printf("%s\n", fname);
if( (fp = open(fname, O_RDWR|O_CREAT, loop )) < 0 )
return fprintf(stderr, "\nUnable to open %s\n", fname);
close(fp);
}
printf("\n");
return 0;
}
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madmanuk
n00b
Joined: 01 Nov 2003
Posts: 63
Location: England
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| Posted: Mon May 31, 2004 1:35 am Post subject: |
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lol nice
_________________
-madmanuk- |
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qzec
Tux's lil' helper
Joined: 19 Jul 2004
Posts: 89
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| Posted: Wed Aug 18, 2004 1:13 am Post subject: |
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nice 
Q |
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