ps

http://whatilearned2day.wordpress.com/2006/11/29/wchan-in-ps-l/

/proc/*/wchan

# cat /proc/18293/wchan
do_exit

‘ps -l’ uses System.Map file for reading the symbols

-bash-2.05b# ps -l
F S   UID   PID  PPID  C PRI  NI ADDR    SZ WCHAN  TTY          TIME CMD
4 S     0    21597 21595  0  76   0    -           1096 wait4  pts/2    00:00:00 bash
4 R     0   21677 21597  0  80   0    -            794    -      pts/2    00:00:00 ps

CODE       HEADER   DESCRIPTION
nwchan     WCHAN    address of the kernel function where the process is sleeping (use wchan if you want the kernel function name). Running tasks will display a dash (’-’) in this  column. 16진수 주소 출력

wchan      WCHAN    name of the kernel function in which the process is sleeping, a "-" if the process is running, or a "*" if the process is multi-threaded and ps is not displaying threads. 함수 이름 출력