shell中运行子shell的问题

zjdick

1. 
   
2. $cat Check_RunLogError.sh
   
3. #!/bin.sh
   
4. LogPath="/miscfile/misc16/misclog/tlog/tmp_run.log"
   
5. Tail_RunLog()
   
6. {
   
7. cat >TailRunLog.sh<< EOF
   
8. #!/bin/sh
   
9. tail -f $LogPath |grep "InMsg,resp," >>/tmp/TailLog.tmp &
   
10. Tail_Flag_Old=\`head -1 $LogPath |awk -F, '{print \$1}'\`
    
11. while true;do
    
12.         Tail_Flag_New=\`head -1 $LogPath |awk -F, '{print \$1}'\`
    
13.         if [ "\$Tail_Flag_New" != "\$Tail_Flag_Old" ];then
    
14.                 ps -ef|grep "tail -f $LogPath"|grep -v grep|awk '{print \$2}'|xargs kill
    
15.                 tail -f $LogPath |grep "InMsg,resp," >>/tmp/TailLog.tmp &
    
16.         fi
    
17.         sleep 1
    
18. done
    
19. EOF
    
20. chmod +x TailRunLog.sh
    
21. ./TailRunLog.sh &
    
22. }
    
23. 
    
24. 
    
25. Check_RunLogError()
    
26. {
    
27.         if [ -z "`ps -ef|grep 'TailRunLog.sh'|grep -v grep`" ];then
    
28.                 Tail_RunLog
    
29.         fi
    
30. }
    
31. Check_RunLogError
    
32. $./Check_RunLogError.sh
    
33. head: cannot open `/miscfile/misc16/misclog/tlog/tmp_run.log' for reading: No such file or directory
    
34. usage: kill [ -s signal | -p ] [ -a ] pid ...
    
35.        kill -l [ signal ]
    
36. tail: cannot open `/miscfile/misc16/misclog/tlog/tmp_run.log' for reading: No such file or directory
    

复制代码

/miscfile/misc16/misclog/tlog/tmp_run.log  不断被写入，且2分钟后会被MV
我的实验环境是这样的
while true;do cat tmp.log >>tmp_run.log  ;sleep 1;done
while true ;do mv tmp_run.log tmp.log;sleep 120;done
但是单独运行生成的TailRunLog.sh是可以成功运行的
但在Check_RunLogError.sh的子环境中，就报上面的错误，而且/tmp/TailLog.tmp是没被写入文件的
难道是环境的问题，有什么解决发放没？

zjdick

找到解决办法了
nohup ./TailRunLog.sh &

haimming

呵呵