Operating Systems

• lab01: cut grep stat

• lab02: wc find ps

• lab03: chained commands

• lab06:

  • get file type - st.st_mode & S_IFMT
  • get file octal permissions - st.st_mode & 0777
  • get file symbolic permissions - S_IRUSR & st.st_mode
  • dirent

• test2026:

  • signal
  • mmap
  • fork
  • exec
  • pipe