Favorite Linux Commands

quicky2g

I use SNMPv3 alot from the CLI:

snmpbulkwalk -v 3 -u myusername -a SHA -A myauthpass -l authPriv -x AES -X myprivpass 10.1.1.1 system

quicky2g

Hardware commands are always great:

https://www.maketecheasier.com/gather-hardware-information-in-linux

lspci

Anything in /proc

I LOVE LOVE LOVE htop

scottalanmiller

I honestly don't like htop very much. I prefer regular top. I find the output more useful.

quicky2g

@scottalanmiller said:

I honestly don't like htop very much. I prefer regular top. I find the output more useful.

htop works much better to see multi-CPU utilization though. Filtering is really nice too.

scottalanmiller

@quicky2g said:

@scottalanmiller said:

I honestly don't like htop very much. I prefer regular top. I find the output more useful.

htop works much better to see multi-CPU utilization though. Filtering is really nice too.

Ah, I never find CPU utilization to be something that I need to watch. Looks neat and impressive on the screen, but once I know the percentage of CPU, I don't care about seeing a chart, but I need to see load numbers, processes and memory stats.

MattSpeller

I use dd a lot

stacksofplates

@MattSpeller said:

I use dd a lot

boobs

MattSpeller

@johnhooks said:

@MattSpeller said:

I use dd a lot

boobs

80085?

stacksofplates

@MattSpeller said:

@johnhooks said:

@MattSpeller said:

I use dd a lot

boobs

80085?

8008135

Minion Queen

ok so looking through the list of new posts.... this caught my eye fast

MattSpeller

@johnhooks said:

@MattSpeller said:

@johnhooks said:

@MattSpeller said:

I use dd a lot

boobs

80085?

8008135

what was the one you had to hold the thing upside down for... oh geez lol

stacksofplates

@MattSpeller said:

@johnhooks said:

@MattSpeller said:

@johnhooks said:

@MattSpeller said:

I use dd a lot

boobs

80085?

8008135

what was the one you had to hold the thing upside down for... oh geez lol

ha 7734

MattSpeller

@Minion-Queen said:

ok so looking through the list of new posts.... this caught my eye fast

quicky2g

List disk info (Lowercase L)

fdisk -l

List hard drive model, serial and capabilities:

hdparm -I /dev/sda

Hard drive speed:

hdparm -t /dev/sdd

Hard drive temperature:

hddtemp -u C -n /dev/sda

What software a web server is running:

curl -I http://www.newegg.com

Kernel buffer messages:

dmesg

File transfer with active speed:

rsync --progress --recursive source/* destincation

Ping sweep a network with NMAP and just show up IP's:

sudo nmap -PO -sP -PE -n --open -v 10.1.1.1-10 | grep "scan report" | grep -v "host down" | sed 's/Nmap scan report for //g'

Only show down/available IP's:

sudo nmap -PO -sP -PE -n --open -v 10.1.1.1-10 | grep "host down" | sed 's/Nmap scan report for //g' | sed 's/ [host down]//g'

Ping a TCP port:

nping --tcp -p 80,443 www.newegg.com

Stress test packets per second with ICMP (5,000 pings sent at rate of 100k per second):

nping --icmp 10.1.1.1 --rate 100000 -c 5000

QoS EF ping:

ping -Q 0xB8 10.1.1.1

Packet capture (CTRL + C when done):

sudo tcpdump -i eth0 -w testing.pcap

View a packet capture for ICMP:

tcpdump -r testing.pcap -nnvvvSe | grep ICMP

That's about all I got right now.

quicky2g

Some "not so standard" useful IP address stuff:

ip addr show eth0
ip -s link show eth0

dafyre

@quicky2g said:

Some "not so standard" useful IP address stuff:
ip addr show eth0
ip -s link show eth0

Supposedly, those are the new standards, ha ha ha.

quicky2g

@dafyre said:

@quicky2g said:
Some "not so standard" useful IP address stuff:
ip addr show eth0
ip -s link show eth0
Supposedly, those are the new standards, ha ha ha.

Muscle memory has me stuck on

ifconfig

dafyre

@quicky2g You and me both, lol.

scottalanmiller

Same here.

travisdh1

@quicky2g said:

@dafyre said:
@quicky2g said:
Some "not so standard" useful IP address stuff:
ip addr show eth0
ip -s link show eth0
Supposedly, those are the new standards, ha ha ha.
Muscle memory has me stuck on
ifconfig

Only the people here will understand how many times I've typed ifconfig instead of ipconfig, or ipconfig instead of ifconfig. So annoying (yes, I annoy myself.)