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Full Discussion: How can I find the size of files added to a folder after a particular date
Operating Systems HP-UX How can I find the size of files added to a folder after a particular date Post 302466838 by DGPickett on Wednesday 27th of October 2010 12:48:42 PM
Old 10-27-2010
If you want to segregate files by the file times as shown in man stat, you can use 'find'. There are two flavors there.
  • The mtime/time/atime arguments are real time clock sensitive and day-granular, but fine for gross bracketing. You can say
    Code:
    -ctime +3 -ctime -5

    to get 2 days 3-d days ago to the second.
  • The newer works with the modification time and a marker file per -newer, so you can say
    Code:
    -newer a ! -newer b

    to get files in any exact range in seconds. See man touch for creating and resetting the mtimes of files.

I was at a loss for better tools to access stat() data, so I wrote one, but the latest version, with arguments for every stat element, seems to be hiding. It can take in a stream of file names and spits them out annotated with the UNIX mtime, in integer seconds since 1970 started, GMT:
Code:
$ cat mysrc/mystat.c

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>

static void psf( char * buf )
{
        struct stat s ;

        if ( 0 > stat( buf, &s ) )
        {
                perror( buf );
                return ; ;
        }

        if ( 0 > printf( "%u\t%s\n", s.st_mtime, buf ) )
        {
                if ( !ferror( stdout ) )
                        exit( 0 );
                perror( "stdout" );
                exit( 1 );
        }
}

int main( int argc, char **argv )
{
        char buf[PATH_MAX + 2];
        char *cp ;
        int i ;
        int clf = 0 ;

        for ( i = 1 ; i < argc ; i++ )
        {
                clf ++ ;
                psf( argv[i] );
        }

        if ( !clf ) while ( fgets( buf, sizeof buf, stdin ) )
        {
                if ( !( cp = strchr( buf, '\n' ) ) )
                {
                        fprintf( stderr, "File path too long: '%s'\n", buf );
                        continue ;
                }

                *cp = NULL ;
                psf( buf );
        }

        if ( !ferror( stdin ) )
                exit( 0 );

        perror( "stdin" );
        exit( 1 );
}

 

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LEARN ABOUT FREEBSD

fdevname_r

DEVNAME(3)						   BSD Library Functions Manual 						DEVNAME(3)

NAME

     devname -- get device name

LIBRARY

     Standard C Library (libc, -lc)

SYNOPSIS

     #include <sys/stat.h>
     #include <stdlib.h>

     char *
     devname(dev_t dev, mode_t type);

     char *
     devname_r(dev_t dev, mode_t type, char *buf, int len);

     char *
     fdevname(int fd);

     char *
     fdevname_r(int fd, char *buf, int len);

DESCRIPTION

     The devname() function returns a pointer to the name of the block or character device in /dev with a device number of dev, and a file type
     matching the one encoded in type which must be one of S_IFBLK or S_IFCHR.	To find the right name, devname() asks the kernel via the
     kern.devname sysctl.  If it is unable to come up with a suitable name, it will format the information encapsulated in dev and type in a
     human-readable format.

     The fdevname() and fdevname_r() function obtains the device name directly from a file descriptor pointing to a character device.  If it is
     unable to come up with a suitable name, these functions will return a NULL pointer.

     devname() and fdevname() return the name stored in a static buffer which will be overwritten on subsequent calls.	devname_r() and
     fdevname_r() take a buffer and length as argument to avoid this problem.

EXAMPLES

     int fd;
     struct stat buf;
     char *name;

	     fd = open("/dev/tun");
	     fstat(fd, &buf);
	     printf("devname is /dev/%s
", devname(buf.st_rdev, S_IFCHR));
	     printf("fdevname is /dev/%s
", fdevname(fd));

SEE ALSO

     stat(2)

HISTORY

     The devname() function appeared in 4.4BSD.  The fdevname() function appeared in FreeBSD 8.0.

BSD
								 February 22, 2005							       BSD
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