Just a list of system calls that I often use. With the header file from a specification and a link to documentation.
| Specification | Header | System call | Description | Link |
|---|---|---|---|---|
| POSIX | fcntl.h |
open() |
Open a file, create a file | |
| POSIX | unistd.h |
read() |
Read from a file descriptor | |
| POSIX | unistd.h |
write() |
Write to a file descriptor | |
| POSIX | unistd.h |
close() |
Close a file descriptor | |
| POSIX | sys/stat.h |
stat()/fstat() |
Get file information (size, time, i-node...) | |
| POSIX | dlfcn.h |
dlopen() |
Open shared object | man7 |
| POSIX | sys/socket.h |
socket() |
Create a socket | man7 |
| POSIX | sys/socket.h |
connect() |
Connect through a socket | man7 |
| POSIX | netdb.h |
getaddrinfo() |
Resolve an address | man7 |