Ubuntu - 3 tricks to copy DVD into iso file

Built in command

cat /dev/sr0 > /home/Documents/mydisk.iso
dd if=/dev/sr0 of=/home/Documents/mydisk.iso

If both cat, and dd not work because of '/dev/sr0': Input/output error
If I run dmesg, I recieve a lot of Buffer I/O error on device sr0

Try ddrescue in Ubuntu the package is gddrescue

sudo apt-get install gddrescue
ddrescue --direct --block-size=2048 --no-split /dev/sr0 /home/Documents/mydisk.iso

Now you can open iso file with VLC

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Linux find command for files or folders older than .....

Find files and folders in current working directory older than 60 days

find ./* -maxdepth 0 -mtime +60

Find only folders in /mnt/media -> child folder -> grandchild exclude these folder notme, dtran, xXXx older than 3 years

find /mnt/media -maxdepth 2 -mtime +1095 -type d -not \( -path "./notme*" -o -path "./dtran*" -o -path "./xXXx*" \) > ~/Folder2Backup.txt

Remove all files that have xxx in names and older than 2 years

find ./ -type f -name "*xxx*.*" -mtime +730 -exec rm "{}" \;

Windows not a big deal, install Cygwin and Finding Nemoooo

find /cygdrive/f -maxdepth 2 -type d -mtime +730 > ~/dir_older_than_2years.txt

Find directory older than 2 years and list its size

find /cygdrive/f -maxdepth 1 -type d -mtime +730 -exec du -sh "{}" \; 

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Listing directory in Graphical format in Bash

ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'

Script from centerkey.com: http://www.centerkey.com/tree/tree.sh

#!/bin/sh
#######################################################
#  UNIX TREE                                          #
#  Version: 2.3                                       #
#  File: ~/apps/tree/tree.sh                          #
#                                                     #
#  Displays Structure of Directory Hierarchy          #
#  -------------------------------------------------  #
#  This tiny script uses "ls", "grep", and "sed"      #
#  in a single command to show the nesting of         #
#  sub-directories.  The setup command for PATH       #
#  works with the Bash shell (the Mac OS X default).  #
#                                                     #
#  Setup:                                             #
#     $ cd ~/apps/tree                                #
#     $ chmod u+x tree.sh                             #
#     $ ln -s ~/apps/tree/tree.sh ~/bin/tree          #
#     $ echo "PATH=~/bin:\${PATH}" >> ~/.profile      #
#                                                     #
#  Usage:                                             #
#     $ tree [directory]                              #
#                                                     #
#  Examples:                                          #
#     $ tree                                          #
#     $ tree /etc/opt                                 #
#     $ tree ..                                       #
#                                                     #
#  Public Domain Software -- Free to Use as You Like  #
#  http://www.centerkey.com/tree  -  By Dem Pilafian  #
#######################################################
echo
if [ "$1" != "" ]  #if parameter exists, use as base folder
   then cd "$1"
   fi
pwd
ls -R | grep ":$" |   \
   sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'
# 1st sed: remove colons
# 2nd sed: replace higher level folder names with dashes
# 3rd sed: indent graph three spaces
# 4th sed: replace first dash with a vertical bar
if [ `ls -F -1 | grep "/" | wc -l` = 0 ]   # check if no folders
   then echo "   -> no sub-directories"
   fi
echo
exit

Add it to your system. Please watch out the code before running it!

curl http://www.centerkey.com/tree/tree.sh > /usr/bin/tree
chmod +x /usr/bin/tree 

 http://stackoverflow.com/questions/3455625/linux-command-to-print-directory-structure-in-the-form-of-a-tree

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Compare 2 directory in Linux

Let's make an example. Create 2 folder and put files in it

mkdir dir{1,2}
touch dir1/{1,2,3,4,5,6}.txt
touch dir2/{2,4,5,7,9}.txt

ls -R dir1
dir1:
1.txt  2.txt  3.txt  4.txt  5.txt  6.txt

ls -R dir2
dir2:
2.txt  4.txt  5.txt  7.txt  9.txt

diff -r dir1 dir2
Only in dir1: 1.txt
Only in dir1: 3.txt
Only in dir1: 6.txt
Only in dir2: 7.txt
Only in dir2: 9.txt

http://stackoverflow.com/questions/16787916/difference-between-2-directories-in-linux

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