Favorite Linux Commands

stacksofplates

@RamblingBiped said:

"sudo !!", "tail -f", the unholy trinity that is "grep/awk/sed", and vim (all from within tmux).

I don't use awk as much as I should, I essentially use it for a glorified csv reader haha

quicky2g

http://www.tecmint.com/20-funny-commands-of-linux-or-linux-is-fun-in-terminal/

"sl" is one of my favs.

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.