[assignments.git] / assgn2 / assgn2.sh

Ian Sutton - CSE 384 - Sept 9 2014

(1) The root directory is uppermost directory mounted on a filesystem,
    usually written as "/". It is the first directory to be mounted
	during boot, and the only directory to be mounted in the case of
	emergency maintenance if booted in single-user mode. It contains
	all the mountpoints for the other filesystems if the OS splits 
	system directories into seperate partitions.
	
(2) The home directory contains perhaps 1 directory per user, named 
    after the user it is for. It contains that user's personal files.
	A user almost certainly has write privileges to his/her home
	directory. It is usually abbreviated as ~, and the `cd` command
	with no arguments will cd to the executing user's home directory,
	if it exists.
	
(3) See screenshots, script replicated here:

#!/bin/sh

cd /home/kremlin 
echo "Printing contents of home directory"
ls -lah /home/kremlin
echo "cd'ing to \"Desktop\" (although I'm using a tiled WM that doesn't support the XDG Desktop directory)"
cd /home/kremlin/Desktop
cd
echo "Printing working directory"
pwd
echo "Creating \"Backups\" directory"
mkdir ~/Backups
echo "Writing name/SUID into /tmp/hw2"
# I thought you meant something about the SUID permissions bit at first :)
echo -ne "Ian Sutton\n417517518" > /tmp/hw2
echo "Copying it to \"Backups\" folder"
cp /tmp/hw2 ~/hw2
echo "Removing original"
rm /tmp/hw2
echo "Listing contents of \"Backups\" folder"
ls ~/Backups
echo "Deleting \"Backups\" folder"
rm -rf ~/Backups

(4) See screenshots, script replicated here:

#!/bin/sh

echo "cd'ing to root directory"
cd /
ls -lah | grep bin
echo "searching for file 'cpp' only one dir deep and displaying its file type.."
find . -maxdepth 1 -type f -name cpp -exec file {} \;
echo "printing the first 160 bytes of it in hex.."
find . -maxdepth 1 -type f -name cpp -exec xd {} \; | head -c 160
Commit	Line	Data
5f59f2f7	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