Cheatsheet: Difference between revisions
→Misc
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nslookup -debug yahoo.com ==> verbose information like TTL, etc
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curl -I http://domain.com Get HTTP header information
curl -i http://domain.com Get HTTP header + Body information
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curl https://www.booleanworld.com/ -sSo /dev/null -w 'namelookup:\t%{time_namelookup}\nconnect:\t%{time_connect}\nappconnect:\t%{time_appconnect}\npretransfer:\t%{time_pretransfer}\nredirect:\t%{time_redirect}\nstarttransfer:\t%{time_starttransfer}\ntotal:\t\t%{time_total}\n'
iptables -L ==> List rules
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sudo tcpdump -s 0 -i ens160 host 10.1.1.1 -v -w /tmp/packet_capture.cap
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Provides the functionality of both the ping and traceroute commands.
Prints information about the entire route.
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mtr --udp google.com UDP datagrams
traceroute 4.2.2.2 ==> Uses UDP
traceroute -n 4.2.2.2 ==> Do not resolve hostnames
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sudo traceroute -nT 4.2.2.2 ==> Use TCP Syn (Port 80)
netstat -s
netstat -a Listing all ports (both TCP and UDP)
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netstat -ant
ps -aux Display all processes in BSD format
ps -eo pid,ppid,user,cmd
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ps -eo pid,ppid,cmd,%mem,%cpu --sort=-%cpu | head
Append a character to each file name indicating the file type:
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-rw-r--r-- 1 root root 0 Sep 13 14:57 mtrr
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== Troubleshooting ==
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