linux后台启动命令

后台启动：nohup bin/hive --service metastore >> logs/metastore.log 2>&1 &
Linux shell中2>&1的含义解释 （全网最全，看完就懂）
Shell 输入/输出重定向

nohup:

1. nohup stands for "no hang up". It allows a command to continue running even after the user who issued the command logs out or closes the terminal.

   When a command is prefixed with nohup, it ensures that the command is immune to hangups (i.e., disconnections from the controlling terminal).

   &:

2. The & (ampersand) operator is used to run a command in the background. It allows the user to continue using the terminal while the command is running.

   When a command is followed by &, it runs asynchronously in the background, and the user can continue issuing other commands in the same terminal session.

• nohup ensures that a command keeps running even after the terminal is closed, while & runs a command in the background, allowing the user to continue using the terminal for other tasks. However, without nohup, background processes started with & will terminate if the terminal is closed.