Ch006 H7: new 17k chars (셸 내부 6 syscall — fork-exec 6단계 read+파싱+PATH+fork+exec+output+wait·copy-on-write·built-in vs 외부 cd 격리·time fork 비용 1.2ms·process group + session + 제어 터미널·Ctrl+C가 group 단위·background &·job control 5(jobs/fg/bg/Ctrl+Z/disown)·nohup vs disown vs tmux·file descriptor 0/1/2 + dup2·>·2>&1 순서·<<<·user fd 3+·anonymous pipe pipe() syscall + dup2 + buffer 64KB·named pipe FIFO·socket 3 IPC 비교·signal 7종(INT/QUIT/KILL/TERM/HUP/USR1/STOP) + SIGKILL catch 불가·sigaction·trap 5단계·env inheritance fork envp 복제 + exec 전달·export만·env -i 격리·login vs interactive vs script 셸 셋 차이·script .zshrc 안 읽음·오해7+FAQ7+추신157)

Author: GoGoComputer