Before continuing, it is important to note that running a background command using an ampersand (&) may require you to hit the ENTER key; otherwise, the script may be suspended. Typically, this happens with commands for stdout. It can be annoying anyway. Example: Adding wait command: Someti...
The first line (/bin/bash) is used in every bash script. It instructs the operating system to use a bash interpreter as a command interpreter. 2. Echo Command Theechobash command can be used to print out text as well as values of variables. In the following example, we will showcase ...
根据wait手册页,wait with multiple pid's只返回等待的最后一个进程的返回值。因此,您需要一个额外的循环,并按照答案中的建议分别等待每个PID。 @尼尔斯:你说得对,对不起。所以应该是:for i in $n_procs; do ./procs[${i}] & ; pids[${i}]=$!; done; for pid in ${pids[*]}; do wait $pid...
一、wget http://download.redis.io/releases/redis-4.0.2.tar.gz二、tar xzf redis-4.0.2.tar.gz cd redis-4.0.2 make make install三、在Redis源代码目录的utils文件夹中有一个名为redis_init_script的初始化脚本文件。需要配置Redis的运行方式和持久化文件、日志文件的 centos redis命令行启动 数据库 开发...
The script takes care of dividing the task. Obviously -j 3 stands for three simultaneous jobs. If you need command line options, use quotes to separate the command from the variable arguments, e.g. parallel -j 3 "proc -r -A=40" *.jpg ...
the background in a subshell. The shell does not wait for the command to finish, and the return status is 0. Commands separated by a ; are executed sequentially; the shell waits for each command to terminate in turn. The return status is the exit status of the last ...
The shell does not wait for the command to finish, and the return status is 0. Commands separated by a ; are executed sequentially; the shell waits for each command to terminate in turn. The return status is the exit status of the last command executed....
If a command is terminated by the control operator &, the shell executes the command in the background in a sub shell. The shell does not wait for the command to finish, and the return status is 0. Commands separated by a ; are executed sequentially; the shell waits for each ...
is there some bash/system command I can use to listen for the exit of that process with the given pid? If no process with mypid exists, I guess the command should simply fail. bash shell-script process proc Share Improve this question Follow edited Feb 28, 2018 at 16:16 asked Feb...
If you add set-o errexitto your script, from that point forward it will abort the execution if any command exists with a code!= 0. Buterrexitisn't used when executing functions inside anifcondition, so instead of remembering that exception, I rather do explicit error handling. ...