Linux Useful Commands

Set the Target IP Address to the $ip system variable
export ip=192.168.1.100

Find the location of a file
locate sbd.exe

Search through directories in the $PATH environment variable
which sbd

Find a search for a file that contains a specific string in it’s name:
find / -name sbd\*

Show active internet connections
netstat -lntp

Change Password
passwd

Verify a service is running and listening
netstat -antp |grep apache

Start a service
systemctl start ssh

systemctl start apache2

Have a service start at boot
systemctl enable ssh

Stop a service
systemctl stop ssh

Unzip a gz file
gunzip access.log.gz

Unzip a tar.gz file
tar -xzvf file.tar.gz

Search command history
history | grep phrase_to_search_for

Download a webpage
wget http://www.cisco.com

Open a webpage
curl http://www.cisco.com

Set the Target IP Address to the $ip system variable
export ip=192.168.1.100

Find the location of a file
locate sbd.exe

Search through directories in the $PATH environment variable
which sbd

Find a search for a file that contains a specific string in it’s name:
find / -name sbd\*

Show active internet connections
netstat -lntp

Change Password
passwd

Verify a service is running and listening
netstat -antp |grep apache

Start a service
systemctl start ssh

systemctl start apache2

Have a service start at boot
systemctl enable ssh

Stop a service
systemctl stop ssh

Unzip a gz file
gunzip access.log.gz

Unzip a tar.gz file
tar -xzvf file.tar.gz

Search command history
history | grep phrase_to_search_for

Download a webpage
wget http://www.cisco.com

Open a webpage
curl http://www.cisco.com