assgn2/assgn2.sh

   1 Ian Sutton - CSE 384 - Sept 9 2014
   2
   3 (1) The root directory is uppermost directory mounted on a filesystem,
   4     usually written as "/". It is the first directory to be mounted
   5         during boot, and the only directory to be mounted in the case of
   6         emergency maintenance if booted in single-user mode. It contains
   7         all the mountpoints for the other filesystems if the OS splits
   8         system directories into seperate partitions.
   9
  10 (2) The home directory contains perhaps 1 directory per user, named
  11     after the user it is for. It contains that user's personal files.
  12         A user almost certainly has write privileges to his/her home
  13         directory. It is usually abbreviated as ~, and the `cd` command
  14         with no arguments will cd to the executing user's home directory,
  15         if it exists.
  16
  17 (3) See screenshots, script replicated here:
  18
  19 #!/bin/sh
  20
  21 cd /home/kremlin
  22 echo "Printing contents of home directory"
  23 ls -lah /home/kremlin
  24 echo "cd'ing to \"Desktop\" (although I'm using a tiled WM that doesn't support the XDG Desktop directory)"
  25 cd /home/kremlin/Desktop
  26 cd
  27 echo "Printing working directory"
  28 pwd
  29 echo "Creating \"Backups\" directory"
  30 mkdir ~/Backups
  31 echo "Writing name/SUID into /tmp/hw2"
  32 # I thought you meant something about the SUID permissions bit at first :)
  33 echo -ne "Ian Sutton\n417517518" > /tmp/hw2
  34 echo "Copying it to \"Backups\" folder"
  35 cp /tmp/hw2 ~/hw2
  36 echo "Removing original"
  37 rm /tmp/hw2
  38 echo "Listing contents of \"Backups\" folder"
  39 ls ~/Backups
  40 echo "Deleting \"Backups\" folder"
  41 rm -rf ~/Backups
  42
  43 (4) See screenshots, script replicated here:
  44
  45 #!/bin/sh
  46
  47 echo "cd'ing to root directory"
  48 cd /
  49 ls -lah | grep bin
  50 echo "searching for file 'cpp' only one dir deep and displaying its file type.."
  51 find . -maxdepth 1 -type f -name cpp -exec file {} \;
  52 echo "printing the first 160 bytes of it in hex.."
  53 find . -maxdepth 1 -type f -name cpp -exec xd {} \; | head -c 160