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Useful Bash Commands

March 22, 2020
 os bash commands linux

Keyboard/Terminal

  • Search in history:
  • Restore lost echo: reset

List logged in users

who -a

Storage

List block devices

blkid

Network

Scans

arp, nmap, tcpdump

Routing

Manipulate routing table to route only a segment through a ppp0 tunnel and default to a route through the local gateway into the internet.

# route IPs in company range through tunnel
ip route add 172.24.0.0/16 dev ppp0

# delete default route via tunnel
ip route del default dev ppp0

# add default route back to internet via local GW
ip route add default via 192.168.178.1 dev wlp2s0

Logs

List user agents:

awk -F\" '($2 ~ "^GET /"){print $6}' /var/log/apache2/access.log | sort | uniq

Others