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Categories >> Software >> Operating Systems >> Linux >> Linux Commands
 
 


 

 
 Linux Commands interview questions  Linux Commands Interview Questions (197)
 Linux Threads interview questions  Linux Threads Interview Questions (12)
 Linux IPC interview questions  Linux IPC Interview Questions (14)
 Linux Socket Programming interview questions  Linux Socket Programming Interview Questions (5)
 Linux System Calls interview questions  Linux System Calls Interview Questions (43)
 Linux General interview questions  Linux General Interview Questions (74)
 Linux AllOther interview questions  Linux AllOther Interview Questions (108)
Question
Linux system monitoring Tools?
 Question Submitted By :: Linux-Commands
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
1 top - Process Activity Command
2 ps - Displays The Processes
3 iostat - Average CPU Load, Disk Activity
4 vmstat - System Activity, Hardware and System Information
These are main monitoring tools ,"Nagios" is also we can use
this is third party open source application software
 
Is This Answer Correct ?    43 Yes 2 No
Santhosh
 
Answer
# 2
w for connected user
last for login & reboot history
lastb- for fail login attemts
lastlog- for most recent login
 
Is This Answer Correct ?    3 Yes 1 No
Komal Agrawal
 
 
 
Answer
# 3
The ps will provide you a list of processes currently
running. There is a wide variety of options that this
command gives you.


A common use would be to list all processes currently
running. To do this you would use the ps -ef command.
(Screen output from this command is too large to include,
the following is only a partial output.)


UID PID PPID C STIME TTY TIME CMDroot
1 0 0 Dec22 ? 00:00:03 initroot 2
1 0 Dec22 ? 00:00:00 [keventd]root 3 1
0 Dec22 ? 00:00:00 [kapmd]root 4 1 0
Dec22 ? 00:00:00 [ksoftirqd_CPU0]root 9
1 0 Dec22 ? 00:00:00 [bdflush]root 5 1
0 Dec22 ? 00:00:00 [kswapd]root 6 1 0
Dec22 ? 00:00:00 [kscand/DMA]root 7 1 0
Dec22 ? 00:01:28 [kscand/Normal]root 8
1 0 Dec22 ? 00:00:00 [kscand/HighMem]root
10 1 0 Dec22 ? 00:00:00 [kupdated]root
11 1 0 Dec22 ? 00:00:00 [mdrecoveryd]
root 15 1 0 Dec22 ? 00:00:01 [kjournald]
root 81 1 0 Dec22 ? 00:00:00 [khubd]
root 1188 1 0 Dec22 ? 00:00:00 [kjournald]
root 1675 1 0 Dec22 ? 00:00:00 syslogd -m
0root 1679 1 0 Dec22 ? 00:00:00 klogd -
xrpc 1707 1 0 Dec22 ? 00:00:00
portmaproot 1813 1 0 Dec22 ?
00:00:00 /usr/sbin/sshd

The first column shows who owns the process. The second
column is the process ID. The Third column is the parent
process ID. This is the process that generated, or started,
the process. The forth column is the CPU usage (in
percent). The fifth column is the start time, of date if
the process has been running long enough. The sixth column
is the tty associated with the process, if applicable. The
seventh column is the cumulitive CPU usage (total amount of
CPU time is has used while running). The eighth column is
the command itself.


With this information you can see exacly what is running on
your system and kill run-away processes, or those that are
causing problems.

http://oracledbain.blogspot.com
 
Is This Answer Correct ?    2 Yes 0 No
Mazqura
 
Answer
# 4
Process Activity Command 
Is This Answer Correct ?    8 Yes 7 No
Vijay Kumar Kushwaha
 
Answer
# 5
Linux system monitoring Tools

Default:
sar
top
iostat
mpstat
VMSTAT
free
mrtg
lsof
netstat
watch


others
======
NAGIOS
opmanager
 
Is This Answer Correct ?    1 Yes 0 No
Govindasamy Chinnu
 
Answer
# 6
zabbix is a open source use to monitor linux,windows,
wan,firewall everything
 
Is This Answer Correct ?    1 Yes 0 No
Balaji Yadhav
 

 
 
 
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