有时候我们打开某个终端执行命令会出现以下情况，比如源码装wdcp：
installing mysql,this may take a few minutes,hold on plz...
configure in progress ...
make in progress ...
0$ lanmp* (leinterest/1.16 1.22 1.09)
这个界面停了很久，而我们不知道它是否有在运行，此时可以这样：
[[email protected] ~]# w
11:37:39 up 1:43, 2 users, load average: 1.29, 1.17, 1.02
USER TTY FROM [email protected] IDLE JCPU PCPU WHAT
root pts/1 x.x.x.x:S. 10:38 55:04 6.16s 0.00s /bin/bash
root pts/2 x.x.x.x 11:33 0.00s 0.15s 0.02s w
查找到对应终端的tty，然后：
[[email protected] ~]# watch ‘ps aux|grep pts/1‘
Every 2.0s: ps aux|grep pts/1 Mon Feb 22 11:45:22 2016
root 6482 0.0 0.3 108304 1884 pts/1 Ss 10:38 0:00 /bin/bash
root 6495 0.0 0.1 108304 700 pts/1 S+ 10:38 0:00 /bin/bash
root 6496 0.0 0.3 106332 1748 pts/1 S+ 10:38 0:00 /bin/bash ./lanmp.sh
root 6497 0.0 0.1 100912 660 pts/1 S+ 10:38 0:00 tee lanmp_ins.log
root 11114 0.0 0.1 106064 680 pts/1 S+ 11:43 0:00 /bin/sh -c failcom=‘exit 1‘; \?for f in x $MAKEFLAGS; do \? case $f in \? *=* | --[!k]*);; \? *k*) failcom=‘fail=yes‘;; \? esac;
root 11115 0.0 0.2 101472 1452 pts/1 S+ 11:43 0:00 make all
root 11171 0.0 0.2 101576 1476 pts/1 S+ 11:43 0:00 make all-recursive
root 11172 0.0 0.2 106064 1384 pts/1 S+ 11:43 0:00 /bin/sh -c failcom=‘exit 1‘; \?for f in x $MAKEFLAGS; do \? case $f in \? *=* | --[!k]*);; \? *k*) failcom=‘fail=yes‘;; \? esac;
root 11178 0.0 0.3 101576 1548 pts/1 S+ 11:43 0:00 make all-am
root 11524 0.0 0.1 101144 880 pts/1 S+ 11:44 0:00 g++ -DMYSQL_SERVER -DDEFAULT_MYSQL_HOME="/www/wdlinux/mysql-5.1.69" -DMYSQL_DATADIR="/www/wdlinux/mysql-5.1.69/var" -DSHAREDIR="/www/wdli
root 11525 90.6 25.9 242272 130292 pts/1 R+ 11:44 0:29 /usr/libexec/gcc/x86_64-redhat-linux/4.4.7/cc1plus -quiet -I. -I../include -I../include -I../include -I../regex -I. -MD item.d -MF .deps/
root 11532 1.5 0.4 108208 2052 pts/2 S+ 11:45 0:00 watch ps aux|grep pts/1
root 11556 0.0 0.2 106060 1280 pts/2 S+ 11:45 0:00 sh -c ps aux|grep pts/1
root 11558 0.0 0.1 103308 896 pts/2 S+ 11:45 0:00 grep pts/1
root 24143 0.0 0.2 101180 1076 pts/1 S+ 10:48 0:00 make
root 24144 0.0 0.2 106064 1380 pts/1 S+ 10:48 0:00 /bin/sh -c failcom=‘exit 1‘; \?for f in x $MAKEFLAGS; do \? case $f in \? *=* | --[!k]*);; \? *k*) failcom=‘fail=yes‘;; \? esac;
此时界面会显示pts/1所运行的进程，如果有变化则说明进程有在运行，如果长时间没变化则考虑进程是否挂掉了。