11. linux_interrupts_flashcards
What command is used to run the watchints program?
./watchints
How do you terminate the watchints program using a kill signal?
Ctrl+C
How do you suspend the watchints program?
Ctrl+Z
What command is used to find the process ID of a running program?
ps
What command is used to forcefully terminate a process given its PID?
kill -9 <PID>
What does the first column in the watchints output represent?
IRQ number (Interrupt Request number)
What does the last column in the watchints output represent?
The hardware device or subsystem generating the interrupt
What is the command to copy a file in Linux?
cp <source> <destination>
What command is used to compile an assembly file using GCC?
gcc <filename>.s -o <output>
How do you execute a compiled binary in Linux?
./<binary_name>
What system call number is used for the ‘exit’ function?
System call #1
What instruction is used in Intel assembly to invoke a system call?
int $0x80
What register is used to pass the system call number?
Register %eax
How can you check the exit status of the last executed command?
echo $?
What command lists all currently running processes?
ps aux
What system call retrieves the process ID of a running process?
getpid
How do you compile a C program into assembly code?
gcc -S <filename>.c
How can you manually invoke the getpid system call in assembly?
movl $20, %eax;
int $0x80
