vmstat
used to obtain information about memory, system processes, paging, interrupts, block I/O, disk, and CPU scheduling.
htop
a process viewer and manager that is interactive
Note:- sudo apt install htop
iotop
is an interactive I/O viewer. Get a snapshot of storage r/w activity.
Note :- sudo iotop
netstat
used to show network statistics
ss
the ss command is a simpler and faster version of the now obsolete netstat command.
provide extensive details on the sockets that provide communications between systems
atop
a tool for monitoring system resources in Linux
It displays tons of information related to the amount of load on the system’s resources at the process level. There can be indefinite advantages to the user if this utility is mastered.
ssh
secure protocol used as the primary means of connecting to Linux servers remotely
touch
used to create, update a computer file or directory's access and modification dates.
apropos
searches manual page names and descriptions for a user-supplied keyword
pwd
displays the current directory path
cp
copy files and directories.
mv
move files or directories.
rm
deletes files and directories
mkdir
create new directories.
rsync
remote file transfer and synchronization.
tar
It is an archive utility.
gzip
use for compression and decompression of files
b2zip
a compression utility comparable to gzip. It employs a distinct compression algorithm.
zip
used for file packaging and compression (archiving)
locate
Search for files.
ps
allows you to list the status of processes running on your system easily.
cron
execute scheduled tasks.
mtr
is a network diagnostic tool, a combination of ping and traceroute commands.
nslookup
interactively query Internet name servers (NS)
host
used for DNS (Domain Name System) lookup operations.
dig
DNS lookup tool
nmcli
sused to display network device status, create, edit, activate/deactivate, and delete network connections.
ping
sends an ICMP ECHO REQUEST to network hosts.
traceroute
examine the path packets follow to reach a specific host.
wget
download files through HTTP, HTTPS, FTP, and FTPS.
curl
data transport via several network protocols. (Can handle more protocols than wget).
dd
used to convert and copy files
fdisk
Modify the disk partition table.