bash: 什么是jobspec
bash: What is a jobspec
在阅读文档 [1] 时，术语 "jobspec" 出现了几次。
什么是工作规范？
[1] https://www.gnu.org/software/bash/manual/html_node/Job-Control-Builtins.html
The job control section of Greg's Bash Guide 描述如下：
A job specification or "jobspec" is a way of referring to the processes that make up a job. A jobspec may be:
%n to refer to job number n.%str to refer to a job which was started by a command beginning with str. It is an error if there is more than one such job.%?str to refer to a job which was started by a command containing str. It is an error if there is more than one such job.%% or %+ to refer to the current job: the one most recently started in the background, or suspended from the foreground. fg and bg will operate on this job if no jobspec is given.%- for the previous job (the job that was %% before the current one).
在阅读文档 [1] 时，术语 "jobspec" 出现了几次。
什么是工作规范？
[1] https://www.gnu.org/software/bash/manual/html_node/Job-Control-Builtins.html
The job control section of Greg's Bash Guide 描述如下：
A job specification or "jobspec" is a way of referring to the processes that make up a job. A jobspec may be:
%nto refer to job numbern.%strto refer to a job which was started by a command beginning withstr. It is an error if there is more than one such job.%?strto refer to a job which was started by a command containingstr. It is an error if there is more than one such job.%%or%+to refer to the current job: the one most recently started in the background, or suspended from the foreground. fg and bg will operate on this job if no jobspec is given.%-for the previous job (the job that was%%before the current one).