handakumbura

/home/dumiduh/pythonian/dfile5 0 0 33188 110100100
/home/dumiduh/pythonian/rfile2 1000 1000 33188 110100100
/home/dumiduh/pythonian/shrubbery 1000 1000 33188 110100100
/home/dumiduh/pythonian/dfile4 0 0 33188 110100100
/home/dumiduh/pythonian/rfile1 0 0 33188 110100100
/home/dumiduh/pythonian/scriptsfolder 0 0 16877 111101101
/home/dumiduh/pythonian/dfile2 1000 1000 33188 110100100
/home/dumiduh/pythonian/rfile3 0 0 33188 110100100
/home/dumiduh/pythonian/dfile1 1000 1000 33188 110100100

handakumbura

import os

folder="/home/dumiduh/pythonian/"
files=os.listdir(folder)

for file in files:
    fqfilename=folder+str(file)
    modemasked=os.stat(fqfilename).st_mode
    uid=os.stat(fqfilename).st_uid
    gid=os.stat(fqfilename).st_gid

handakumbura

root@dumiduh-thinkpad:/home# python
Python 2.7.6 (default, Oct 26 2016, 20:30:19)
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os, shutil
>>> dir(os)
['EX_CANTCREAT', 'EX_CONFIG', 'EX_DATAERR', 'EX_IOERR', 'EX_NOHOST', 'EX_NOINPUT', 'EX_NOPERM', 'EX_NOUSER', 'EX_OK', 'EX_OSERR', 'EX_OSFILE', 'EX_PROTOCOL', 'EX_SOFTWARE', 'EX_TEMPFAIL', 'EX_UNAVAILABLE', 'EX_USAGE', 'F_OK', 'NGROUPS_MAX', 'O_APPEND', 'O_ASYNC', 'O_CREAT', 'O_DIRECT', 'O_DIRECTORY', 'O_DSYNC', 'O_EXCL', 'O_LARGEFILE', 'O_NDELAY', 'O_NOATIME', 'O_NOCTTY', 'O_NOFOLLOW', 'O_NONBLOCK', 'O_RDONLY', 'O_RDWR', 'O_RSYNC', 'O_SYNC', 'O_TRUNC', 'O_WRONLY', 'P_NOWAIT', 'P_NOWAITO', 'P_WAIT', 'R_OK', 'SEEK_CUR', 'SEEK_END', 'SEEK_SET', 'ST_APPEND', 'ST_MANDLOCK', 'ST_NOATIME', 'ST_NODEV', 'ST_NODIRATIME', 'ST_NOEXEC', 'ST_NOSUID', 'ST_RDONLY', 'ST_RELATIME', 'ST_SYNCHRONOUS', 'ST_WRITE', 'TMP_MAX', 'UserDict', 'WCONTINUED', 'WCOREDUMP', 'WEXITSTATUS', 'WIFCONTINUED', 'WIFEXITED', 'WIFSIGNALED', 'WI

handakumbura

/home/dumiduh/sharedfile: Permission denied

original file
pyuser1 appending
pyuser2 appending

handakumbura

su - pyuser1
echo "pyuser1 appending" >> /home/dumiduh/sharedfile
exit
su - pyuser2
echo "pyuser2 appending" >> /home/dumiduh/sharedfile
exit
su - pyuser3
echo "pyuser3 appending" >> /home/dumiduh/sharedfile
exit
cat /home/dumiduh/sharedfile

handakumbura

groupadd filesharegroup
useradd -g filesharegroup pyuser1
useradd -g filesharegroup pyuser2
useradd pyuser3
echo “original file” > sharedfile
chown pyuser1:filesharegroup sharedfile
chmod 660 sharedfile 

handakumbura

ls -l

handakumbura

root@d1ad06cfbc91:/usr/local/tomcat# ls
LICENSE  NOTICE  RELEASE-NOTES    RUNNING.txt  bin  conf    file1  include    lib  logs  native-jni-lib  temp  webapps  work
root@d1ad06cfbc91:/usr/local/tomcat# cat file1
life inside a container

handakumbura

docker container start d1ad06cfbc91

docker container exec -it d1ad06cfbc91 bash

handakumbura

CONTAINER ID    IMAGE         COMMAND             CREATED      STATUS            PORTS            NAMES
d1ad06cfbc91    tomcat:8.0    "catalina.sh run"   7 hours ago  Exited (143) 16 seconds ago  fervent_stone