LinuxShell_semaphore

send signal by using KILL

• 指令操作語法

      [kill [-signal] pid]
  

• 終止

      ^C
      
      ^D // Unix 不支援
  
      [kill [-1] pid] // 掛斷 訊號名稱：SIGHUP
  
      [kill [-9] pid] // 強迫終止 訊號名稱：SIGKILL
  
      [kill [-15] pid] // 終止 訊號名稱：SIGTERM
  

• 暫停

      ^Z // 暫停執行 suspend
  

• execution in foreground

  $ fg <cmd>
  

  https://github.com/QueenieCplusplus/LinuxShell_fgbg/blob/master/README.md#foreground-前景執行

• execution in background

  $ bg <cmd> 
  

  https://github.com/QueenieCplusplus/LinuxShell_fgbg/blob/master/README.md#background-背景執行

• help

      ✗ kill -l
  
     HUP 
     INT 
     QUIT 
     ILL 
     TRAP 
     ABRT 
     EMT 
     FPE 
     KILL 
     BUS 
     SEGV 
     SYS 
     PIPE 
     ALRM 
     TERM 
     URG 
     STOP 
     TSTP 
     CONT 
     CHLD 
     TTIN 
     TTOU 
     IO 
     XCPU 
     XFSZ 
     VTALRM 
     PROF 
     WINCH 
     INFO 
     USR1 
     USR2