quiz 1-5 review Flashcards
pwd
print working directory
ssh
connect to remote machine
make
invoke Makefile to compile program
gcc
compile program such as C program
tar
work with .tar archive files or directories
grep
search for text in files
cp
copy file/directory
history
show list of most recently entered commands
top
display table of processes (i.e. programs) being run by users of computer
touch
create blank file if it doesn’t exist else update its modification timestamp to present time
wget
download file from internet
mkdir
make empty directory
mv
move or rename files
ls
list directory contents
hostname
show name of computer
diff
compare two files line by line (assuming they are text files)
scp
copy files, usually btwn two computers
cd
change working directory
argv[0]
./executable_name
break
exit closest outside loop or exit switch statement
continue
skip to next iteration of outside loop
static
variable initialized once and retains its value across multiple function calls
stack buffer overflow
trying to access array element at too high of an index
stack buffer underflow
trying to access array element at too low of an index
address sanitizer
expose runtime memory errors
passed parameters
receive values, no access to where the values are stored <-> can’t change variables’ values outside function
stack
variable’s size known at compile time, memory automatically allocated in function stack & de-allocated after function leaves stack
heap
malloc/calloc memory for variables, must be freed else memory leak
heap buffer overflow
not enough memory m/calloc’d to store data type or index too high
free
only on m/calloc-ed memory
double free
address sanitizer
signed MSB 1
-2^(num of bits-1)
signed and unsigned addition overflow
wrap around to smallest number
octal literal prefix
0
XOR
> > n
divide by 2^n
«2
mult by 2^n, may overflow/sign change
