Bash 脚本挂起
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Bash script hangs
提问by user871695
I have the code below. Basically this code will ls -tr $FROM_DIRECTORYthen redirect the output to /tmp/msc.load.tmp. After this a forloop will execute and move the first 3000 files to another directory. The code is working fine but sometimes it will hang. I have no idea why it hangs. Anyone know what is the problem of the script?
我有下面的代码。基本上这段代码会将ls -tr $FROM_DIRECTORY输出重定向到/tmp/msc.load.tmp. 在此之后，for将执行一个循环并将前 3000 个文件移动到另一个目录。代码运行良好，但有时会挂起。我不知道为什么它挂起。有谁知道脚本的问题是什么？
ls -tr $FROM_DIRECTORY > /tmp/msc.load.tmp
echo "$sysdate -- Listing Diretory " >>$LOGFILE
# From the file list, get the 3000 from the top to move. Skip the remaining files in the list
# in this iteration.
# Version 1.1 - List the files from the temporary file.
for file in $(cat /tmp/msc.load.tmp | grep 'MSCERC.*' | head -3000 )
do
mv $FROM_DIRECTORY/$file $DESTINATION_DIRECTORY
done
echo "$sysdate -- End of Script " >>$LOGFILE
exit 0
# End of script.
回答by Karl
Yeap, try a find.
是的，尝试查找。
Also if you're not aware of it, the set -x command is valuable in situations like this. My approach is to add set -x to the top of the script and then run it with output redirected to a file. capturing both standard out and standard error
此外，如果您不知道， set -x 命令在这种情况下很有价值。我的方法是将 set -x 添加到脚本的顶部，然后在输出重定向到文件的情况下运行它。捕获标准输出和标准错误
./script.sh > output.txt 2>&1
./script.sh > output.txt 2>&1
If you want you can tail -f output.txt in another window to monitor progress.
如果需要，您可以在另一个窗口中使用 tail -f output.txt 来监控进度。
Set -x echos the commands run and the redirection puts the command and output into cronological order.
Set -x 回显运行的命令，重定向将命令和输出按时间顺序排列。
