查看系统版本：
cat /proc/version
lsb_release -a
uname -a
查看进程：
ps
ps aux |grep #查询字符串
杀掉进程：
kill #标号
强制杀掉：
kill -s 9 #标号（进程说明见附件）
命令补全
history|grep xxx
命令反向查找：
ctrl+R 输入历史命令的部分内容
附：
附录：各种信号及其用途 Signal Description Signal number on Linux x86[1] SIGABRT Process aborted 6 SIGALRM Signal raised by alarm 14 SIGBUS Bus error: "access to undefined portion of memory object" 7 SIGCHLD Child process terminated, stopped (or continued*) 17 SIGCONT Continue if stopped 18 SIGFPE Floating point exception: "erroneous arithmetic operation" 8 SIGHUP Hangup 1 SIGILL Illegal instruction 4 SIGINT Interrupt 2 SIGKILL Kill (terminate immediately) 9 SIGPIPE Write to pipe with no one reading 13 SIGQUIT Quit and dump core 3 SIGSEGV Segmentation violation 11 SIGSTOP Stop executing temporarily 19 SIGTERM Termination (request to terminate) 15 SIGTSTP Terminal stop signal 20 SIGTTIN Background process attempting to read from tty ("in") 21 SIGTTOU Background process attempting to write to tty ("out") 22 SIGUSR1 User-defined 1 10 SIGUSR2 User-defined 2 12 SIGPOLL Pollable event 29 SIGPROF Profiling timer expired 27 SIGSYS Bad syscall 31 SIGTRAP Trace/breakpoint trap 5 SIGURG Urgent data available on socket 23 SIGVTALRM Signal raised by timer counting virtual time: "virtual timer expired" 26 SIGXCPU CPU time limit exceeded 24 SIGXFSZ File size limit exceeded 25