$1 executes a program in background which is provided as an argument pid=$!#stores executed process id in pid count=$(ps-A|grep$pid|wc-l)#check whether process is still running if[[$count-eq0]]#if process is already terminated, then there can be two cases, the process executed and...
local -r code="${2:-90}" echo "${msg}" >&2 exit "${code}"}if [[ ! -f "${conf_file}" ]]; then die "error reading configuration file: ${conf_file}" "${error_reading_conf_file}"fi# shellcheck source=script.conf. "${conf_file}"parse_user_options() { local ...
1.使用&在后台运行salt 1.保存其PID 1.在未来的某个时候，wait 1.获取wait的退出状态 ...
How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess ends with code !=0? 如何在bash脚本中等待该脚本生成的几个子进程完成并返回退出代码!=0,当任何子进程以代码结束时!= 0? 简单脚本: 1 2 3 4 5 #!/bin/bash foriin`seq09`;do doCalculations...
UIAbility在onBackground执行耗时操作时是否会影响另外一个UIAbility的onForeground getContext(this)能否在自定义类中使用 应用的进程启用过程是怎样的 是否允许三方应用在手机设备上Fork进程 两个UIAbility之间可通过哪些方法实现数据传递 Extension类进程崩溃是否会导致主进程崩溃 有哪些进程间通信的手段?例如,Ex...
# Save the PID of the scp of a given server for laterdone# Iterate through all the servers and:# Wait for the return code of each# Check the exit code from each scpforserverin${!server_pid[*]};dowait${server_pid[$server]}test$?-ne0&&echo"ERROR: Copy from$serverhad problems, ...
1.使用&在后台运行salt 1.保存其PID 1.在未来的某个时候，wait 1.获取wait的退出状态 ...
Like SPACE, but scrolls a full screenful, even if it reaches end-of-file in the process. ENTER or RETURN or ^N or e or ^E or j or ^J Scroll forward N lines, default 1. The entire N lines are displayed, even if N is more than the screen size. ...
A synonym forexit status. signal A mechanism by which a process may be notified by the kernel of an event occurring in the system. special builtin A shell builtin command that has been classified as special by theposixstandard. token ...
echo "PID: $process_id" wait $process_id echo "Exit status: $?" Let’s break down the code line by line: The first line, shebang, tells the operating system which interpreter to use to parse the rest of the file. We are using the sleep command to emulate a time-consuming backgro...