-A all processes -C by command name

-N negate selection -G by real group ID (supports names)

-a all w/ tty except session leaders -U by real user ID (supports names) -d all except session leaders -g by session OR by effective group name

-e all processes -p by process ID

T all processes on this terminal -s processes in the sessions given a all w/ tty, including other users -t by tty

g OBSOLETE -- DO NOT USE -u by effective user ID (supports names)

r only running processes U processes for specified users x processes w/o controlling ttys t by tty

*********** output format ********** *********** long options ***********

-o,o user-defined -f full --Group --User --pid --cols --ppid -j,j job control s signal --group --user --sid --rows --info -O,O preloaded -o v virtual memory --cumulative --format --deselect -l,l long u user-oriented --sort --tty --forest --version -F extra full X registers --heading --no-heading --context ********* misc options *********

-V,V show version L list format codes f ASCII art forest -m,m,-L,-T,H threads S children in sum -y change -l format -M,Z security data c true command name -c scheduling class -w,w wide output n numeric WCHAN,UID -H process hierarchy

netstat -ano 查看网络连状态

显示协议统计信息和当前 TCP/IP 网络连接。

NETSTAT [-a] [-b] [-e] [-n] [-o] [-p proto] [-r] [-s] [-v] [interval]

-a 显示所有连接和监听端口。

-b 显示包含于创建每个连接或监听端口的

可执行组件。在某些情况下已知可执行组件