els_hypen_el.py

import os
import time
from datetime import datetime
from stat import *

#
# 1. File type (directory / regular file)
# 2. File permission (owner, group, others)
# 3. Owner name
# 4. Group name
# 5. File size
# 6. Modified date
# 7. File name
#

def get_permission_flags(filestat) :

    permission = ''

    # first hypen - file type
    if(S_ISREG(filestat.st_mode)) :
        permission += '-'
    elif(S_ISDIR(filestat.st_mode)) :
        permission += 'd'
    elif(S_ISLNK(filestat.st_mode)) :
        permission += 'l'
    else :
        permission += '-'

    # second hypen - read for user
    if(S_IRUSR & filestat.st_mode) :
        permission += 'r'
    else :
        permission += '-'

    # third hypen - write for user
    if(S_IWUSR & filestat.st_mode) :
        permission += 'w'
    else :
        permission += '-'

    # fourth hypen - execute for user
    if(S_IXUSR & filestat.st_mode) :
        permission += 'x'
    else :
        permission += '-'

    # fifth hypen - read for group
    if(S_IRGRP & filestat.st_mode) :
        permission += 'r'
    else :
        permission += '-'

    # sixth hypen - write for group
    if not S_IWGRP & filestat.st_mode :
        permission += 'w'
    else :
        permission += '-'

    # seventh hypen - execute for group
    if(S_IXGRP & filestat.st_mode) :
        permission += 'x'
    else :
        permission += '-'

    # 7th hypen - read for others
    if(S_IROTH & filestat.st_mode) :
        permission += 'r'
    else :
        permission += '-'

    # 8th hypen - write for others
    if not S_IWOTH & filestat.st_mode :
        permission += 'w'
    else :
        permission += '-'

    # 9th hypen - excute for others
    if(S_IXOTH & filestat.st_mode) :
        permission += 'x'
    else :
        permission += '-'

    return permission


def main() :

    filelist = os.listdir()

    for filepath in filelist :

        filestat = os.stat(filepath)
        # print(filestat)
        dateobj = datetime.fromtimestamp(filestat.st_mtime)
        datestr = dateobj.strftime("%b %d %H:%M")

        # this function call will handle all the hypen work
        permission = get_permission_flags(filestat)

        print("%s %s %s %d %s %s" % (permission, filestat.st_uid, 
			filestat.st_gid, filestat.st_size, datestr, filepath))

main()