Unix commands

1. ls - lists the contents of current directory
ls -l - lists the contents of a directory with permissions information and
timestamp
ls directoryname - lists the contents of that directory
cd - change directory.
If you give it no arguments, it puts you back to your home, where you log in.
cd .. - go up one directory.
cd directoryname - go into a directory
rm - remove
rm filename - remove that file
rm -i filename - a safe remove - it asks you to confirm that you want to remove
the file
mv - move
mv filename1 filename2 - takes filename1 and renames it filename2. This is
used to rename a file or move a file to a different directory
cp - copy
cp /cs/faculty/franklin/labfiles/prog1/solution/* .
this copies all of the files in that solution directory to the current
directory.
man - prints the man page for a function
man strcmp - this prints out the man page for strcmp, telling you what it does,
what the input parameters are, what it returns, etc.
cat - prints out a file to the screen
cat Friend.h - prints out Friend.h without having to go into vim or emacs
more - prints out a file to the screen, one screen at a time
more Friend.cpp - prints out Friend.cpp one screen at a time. This is used for
a really long file so that you can look at one screen. Press space
bar to advance to the next screen.
./a.out | more
This takes the output from your program and, instead of running down your
screen so quickly you can't read it, it prints it out one screen at a time.
'|' is called a pipe - it makes the output of ./a.out the input for more.