From 6d0256790149e639ed578a6b45bafae0d2af8319 Mon Sep 17 00:00:00 2001 From: struggling <630441839@qq.com> Date: Wed, 16 Dec 2015 11:02:14 +0800 Subject: [PATCH] Delete 20151204 Linux or Unix--jobs Command Examples.md --- ...04 Linux or Unix--jobs Command Examples.md | 196 ------------------ 1 file changed, 196 deletions(-) delete mode 100644 sources/tech/20151204 Linux or Unix--jobs Command Examples.md diff --git a/sources/tech/20151204 Linux or Unix--jobs Command Examples.md b/sources/tech/20151204 Linux or Unix--jobs Command Examples.md deleted file mode 100644 index 40333bed6c..0000000000 --- a/sources/tech/20151204 Linux or Unix--jobs Command Examples.md +++ /dev/null @@ -1,196 +0,0 @@ -translation by strugglingyouth -Linux / Unix: jobs Command Examples -================================================================================ -I am new Linux and Unix user. How do I show the active jobs on Linux or Unix-like systems using BASH/KSH/TCSH or POSIX based shell? How can I display status of jobs in the current session on Unix/Linux? - -Job control is nothing but the ability to stop/suspend the execution of processes (command) and continue/resume their execution as per your requirements. This is done using your operating system and shell such as bash/ksh or POSIX shell. - -You shell keeps a table of currently executing jobs and can be displayed with jobs command. - -### Purpose ### - -> Displays status of jobs in the current shell session. - -### Syntax ### - -The basic syntax is as follows: - - jobs - -OR - - jobs jobID - -OR - - jobs [options] jobID - -### Starting few jobs for demonstration purpose ### - -Before you start using jobs command, you need to start couple of jobs on your system. Type the following commands to start jobs: - - ## Start xeyes, calculator, and gedit text editor ### - xeyes & - gnome-calculator & - gedit fetch-stock-prices.py & - -Finally, run ping command in foreground: - - ping www.cyberciti.biz - -To suspend ping command job hit the **Ctrl-Z** key sequence. - -### jobs command examples ### - -To display the status of jobs in the current shell, enter: - - $ jobs - -Sample outputs: - - [1] 7895 Running gpass & - [2] 7906 Running gnome-calculator & - [3]- 7910 Running gedit fetch-stock-prices.py & - [4]+ 7946 Stopped ping cyberciti.biz - -To display the process ID or jobs for the job whose name begins with "p," enter: - - $ jobs -p %p - -OR - - $ jobs %p - -Sample outputs: - - [4]- Stopped ping cyberciti.biz - -The character % introduces a job specification. In this example, you are using the string whose name begins with suspended command such as %ping. - -### How do I show process IDs in addition to the normal information? ### - -Pass the -l(lowercase L) option to jobs command for more information about each job listed, run: - - $ jobs -l - -Sample outputs: - -![Fig.01: Displaying the status of jobs in the shell](http://s0.cyberciti.org/uploads/faq/2013/02/jobs-command-output.jpg) -Fig.01: Displaying the status of jobs in the shell - -### How do I list only processes that have changed status since the last notification? ### - -First, start a new job as follows: - - $ sleep 100 & - -Now, only show jobs that have stopped or exited since last notified, type: - - $ jobs -n - -Sample outputs: - - [5]- Running sleep 100 & - -### Display lists process IDs (PIDs) only ### - -Pass the -p option to jobs command to display PIDs only: - - $ jobs -p - -Sample outputs: - - 7895 - 7906 - 7910 - 7946 - 7949 - -### How do I display only running jobs? ### - -Pass the -r option to jobs command to display only running jobs only, type: - - $ jobs -r - -Sample outputs: - - [1] Running gpass & - [2] Running gnome-calculator & - [3]- Running gedit fetch-stock-prices.py & - -### How do I display only jobs that have stopped? ### - -Pass the -s option to jobs command to display only stopped jobs only, type: - - $ jobs -s - -Sample outputs: - - [4]+ Stopped ping cyberciti.biz - -To resume the ping cyberciti.biz job by entering the following bg command: - - $ bg %4 - -### jobs command options ### - -From the [bash(1)][1] command man page: - -注：表格 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
OptionDescription
-lShow process id's in addition to the normal information.
-pShow process id's only.
-nShow only processes that have changed status since the last notification are printed.
-rRestrict output to running jobs only.
-sRestrict output to stopped jobs only.
-xCOMMAND is run after all job specifications that appear in ARGS have been replaced with the process ID of that job's process group leader./td>
- -### A note about /usr/bin/jobs and shell builtin ### - -Type the following type command to find out whether jobs is part of shell, external command or both: - - $ type -a jobs - -Sample outputs: - - jobs is a shell builtin - jobs is /usr/bin/jobs - -In almost all cases you need to use the jobs command that is implemented as a BASH/KSH/POSIX shell built-in. The /usr/bin/jobs command can not be used in the current shell. The /usr/bin/jobs command operates in a different environment and does not share the parent bash/ksh's shells understanding of jobs. - --------------------------------------------------------------------------------- - -via: - -作者：Vivek Gite -译者：[译者ID](https://github.com/译者ID) -校对：[校对者ID](https://github.com/校对者ID) - -本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 - -[1]:http://www.manpager.com/linux/man1/bash.1.html