At 20, Linux is invisible, ubiquitous

CNN ^ | August 26, 2011 12:58 p.m. EDT | Mark Milian

[Ernest_at_the_Beach]

Linux-powered software is growing quickly in emerging industries, as depicted in this CNN infographic from MBAOnline.com

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STORY HIGHLIGHTS

• Linux, the free software platform, was conceived 20 years ago
  
• In phones, ATMs, airplane consoles and other machines, Linux is pervasive
  
• Linux, the brand and the desktop operating system, failed to go mainstream

[central_va]

NAME

pslist — control processes and their descendants

SYNOPSIS

pslist [pid/name...] pslist -h | --help pslist -v | --version

rkill [−SIG] pid/name...

rrenice [+/-]pri pid/name...

DESCRIPTION

The pslist utility examines the list of current processes to find a specified process and all its descendants. A process may be specified either by name or by process ID. If no arguments are given, pslist displays a list of the whole process tree. For each process specified on the command line, pslist outputs a line containing the process ID, the command name, and the PIDs of all the descendants (and their descendants, etc.).

When invoked as rkill, this utility does not display information about the processes, but sends them all a signal instead. If not specified on the command line, a terminate (SIGTERM) signal is sent.

When invoked as rrenice, this utility does not display information about the processes, but attempts to set their nice value instead.

RETURN VALUES

The pslist utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

pgrep(1), pkill(1) HISTORY The pslist utility was written by Peter Pentchev in 2000. AUTHORS Peter Penchev 〈 roam [AT] ringlet.net〉 BSD June 1, 2009 BSD

[ShadowAce]

That’s a BSD command—not a Linux command. :P

[central_va]

Funny most unix commands an ‘r’ in front stands for remote, like rsh etc.

[MarkL]

We were using SCO at the time, building systems with EISA boards and as many as four caching (crashing?-LOL) controllers with as many drives as we could cram in a machine.

I remember those days, really fun! I sort of miss those DPT caching controllers...

Mark

[dayglored]

> Any proper history of computing must mention the PDP-11 ... there.

Absolutely!

I didn't specify the hardware, but yes... a PDP-11/23 running RT-11 on 8-inch floppies... another one, later, running RSX-11/M doing documentation with RUNOFF... oh yes, lots of PDP-11's back there in the dim, dark mists....

[dayglored]

> That’s a BSD command—not a Linux command. :P

Aye, that's tellin' 'im, Laddie!

Gotta keep yer families straight!