Nohup

by Bramante - - | Comments

Build Android的source code很花時間, 如果能利用下班時間來build code是不錯的選擇, 但是下班後Terminal必需保持與Server的連線才能build code嗎? 其實不用, 只要使用nohup這個command在背景執行build code script就可以了.

示範用的script:

test.sh
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#!/bin/bash

i=0

while [ $i -lt 50 ]
do
  echo "Do something.... $i"
  i=$( expr $i + 1 )
  sleep 1
done

echo "done."

用nohup在背景執行test.sh, 然後登出Server:

Terminal
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bramante@matrix:~/test$ ll
total 12
drwxrwxr-x 2 bramante bramante 4096 Aug 28 00:16 ./
drwxr-xr-x 5 bramante bramante 4096 Aug 20 09:29 ../
-rw-rw-r-- 1 bramante bramante  121 Aug 28 00:10 test.sh
bramante@matrix:~/test$ chmod a+x test.sh
bramante@matrix:~/test$ ll
total 12
drwxrwxr-x 2 bramante bramante 4096 Aug 28 00:16 ./
drwxr-xr-x 5 bramante bramante 4096 Aug 20 09:29 ../
-rwxrwxr-x 1 bramante bramante  121 Aug 28 00:10 test.sh*
bramante@matrix:~/test$ nohup ./test.sh &
[1] 3214
bramante@matrix:~/test$ nohup: ignoring input and appending output to `nohup.out'

bramante@matrix:~/test$ exit

之後再次登入Server時, 可以用”tail -f ./nohup.out”查看build code log, 看看是否有執行到”done”, 把script完整的跑完:

Terminal
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bramante@matrix:~$ cd test/
bramante@matrix:~/test$ tail -f ./nohup.out
Do something.... 22
Do something.... 23
Do something.... 24
Do something.... 25
Do something.... 26
Do something.... 27
Do something.... 28
Do something.... 29
Do something.... 30
Do something.... 31
Do something.... 32
Do something.... 33
Do something.... 34
Do something.... 35
Do something.... 36
Do something.... 37
Do something.... 38
Do something.... 39
Do something.... 40
Do something.... 41
Do something.... 42
Do something.... 43
Do something.... 44
Do something.... 45
Do something.... 46
Do something.... 47
Do something.... 48
Do something.... 49
done.
^C
bramante@matrix:~/test$

有看到”done”, test.sh最後有完整的跑完.

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