( /LYNX/BACH/chap09.txt )
9. 9.1 9.1.1 9.1.2 9.1.2.1 fork 9.1.2.2 9.1.3 () 9.2 9.2.1 , 9.2.1.1 fork 9.2.1.2 exec 9.2.2 "" 9.2.3 9.2.3.1 - 9.2.3.2 9.2.4 9.3 9.4 9.5