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Old 11-12-2019, 07:17 PM   #1
mintner
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show first 10 processes with ps command

Why -11 instead of -10 to show the first 10 processes on the system?
[root@server1 ~]# ps ax | head -11
 
Old 11-12-2019, 07:24 PM   #2
scasey
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Quote:
Originally Posted by mintner View Post
Why -11 instead of -10 to show the first 10 processes on the system?
[root@server1 ~]# ps ax | head -11
Welcome to LQ

What's on the first line when you run that? Is it a process?

How many processes are displayed when you run that?
 
Old 11-12-2019, 07:28 PM   #3
frankbell
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I think to show the first 11 lines, which includes the header line.

Code:
  PID TTY      STAT   TIME COMMAND
 
Old 11-12-2019, 07:40 PM   #4
scasey
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This looked like homework to me, so I opted to take take a teacher’s stance rather than answer the question
I’m sorry I didn’t make that clear.
Last edited by scasey; 11-12-2019 at 07:45 PM.
 
1 members found this post helpful.
Old 11-12-2019, 07:57 PM   #5
BW-userx
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he did have the answer, he just didn't know the why, Promote learning.
Code:
 nl = number line (just a guess to the why its called nl, Number Line.
userx@FreeBSD.edy:~
$ ps -aux | head -11 | nl
     1	USER         PID  %CPU %MEM     VSZ    RSS TT  STAT STARTED      TIME COMMAND
     2	root          11 290.2  0.0       0     64  -  RNL  16:21   751:58.87 [idle]
     3	userx      33858  51.2  3.9 2603196 320308  -  S    19:56     0:08.38 /usr/loca
     4	userx      33325  24.7  4.4  478436 360672  -  S    19:48     1:30.04 mpv --pla
     5	root       22834  16.1  1.1  118192  89944  -  S    16:22    13:43.98 /usr/loca
     6	userx      34166  15.1  5.3 2853760 432976  -  S    19:16     0:43.22 /usr/loca
     7	userx      96605  10.8  0.6   99784  47744  -  S    16:22     9:30.20 xfwm4
     8	root          12   3.0  0.0       0    288  -  WL   16:21     6:27.07 [intr]
     9	userx      79315   2.8  2.6 2490664 210388  -  S    19:53     0:02.27 /usr/loca
    10	userx      35777   2.7  5.8 2782196 468164  -  S    19:16     0:53.86 /usr/loca
    11	userx      34676   0.6  1.6 2404124 133932  -  S    19:56     0:00.29 /usr/loca
Last edited by BW-userx; 11-12-2019 at 08:00 PM.
 
Old 11-12-2019, 08:43 PM   #6
frankbell
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I didn't occur to me that this might be a homework question, and, I must say, I never heard of the head command, you OP taught me something.
 
Old 11-13-2019, 10:22 PM   #7
chrism01
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Interesting; 15k posts and " I never heard of the head command".
Just goes to show how experience differs - I can't remember not knowing that and it's mate 'tail'.
 
Old 11-13-2019, 10:40 PM   #8
nigelc
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man head, just like man tail.
 
Old 11-14-2019, 07:29 AM   #9
BW-userx
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more | less?
 
Old 11-16-2019, 02:49 AM   #10
ondoho
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most!
 
  


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