既然你在推doSqoop做背景工作&，唯一限制脚本执行时间的是sleep 0.5不管花多长时间checkqueue跑。你考虑...
Here’s a comprehensive example of using the wait command in advanced bash scripting. The script below contains two processes, each having a unique pid. Now, the script is to run the processes in the background. The first command has a $process_id ($1). Also, the wait command is linke...
你不能。你的计算机越来越少地被利用，直到所有的后台作业完成，这时你可以开始一批新的作业。
isspecial variable that holds thereturnvalue of the recently executed command. echo"Process with PID $pid has finished with Exit status: $?"
在上述脚本中,我们使用了wait命令等待pid1和pid2两个进程执行完毕后,输出"所有进程已完成"。 示例二:获取进程退出状态 #!/bin/bashecho"开始执行脚本"# 后台运行进程1sleep3&pid1=$!# 后台运行进程2sleep4&pid2=$!# 等待所有进程完成,并获取退出状态wait$pid1$pid2status1=$?status2=$?if[$status1-eq...
wait is a command that waits for the given jobs to complete and returns the exit status of the waited for command.
/bin/bash ./foo.sh & BPID=$! wait $BPID stat=$? if [ $stat –eq 0 ] then echo “Exit status - $stat” else echo “Exit status - $stat” fi Result ./foo.sh: line 4: iiecho: command not found ./foo.sh: line 4: iiecho: command not found...
Wait will use the PID of the last command used (lxterminal). However, you are interested in child process which would be the PID of ./myapplication running itself. Basically, lxterminal will have its own PID and as parent, it will launch your script and it will create a new process with...
command1 & command2 & command3 & wait Run Code Online (Sandbox Code Playgroud) 意味着这三个命令并行运行,并且只有在所有命令完成后才会完成下一步。我的问题在于这两个 bash 脚本的结果:#!/bin/bash for i in 1 2 3 ; do a=$i echo "$a is $i" done 2>/dev/null Run Code Online (...
Bash wait Command with Examples - Introduction The Bash shell is one of most widely used shells in Unix/Linux environment. One of its most useful commands is wait command. In this article, we will explore Bash wait command and its usage with examples. Wh