Linux useful commands

Linux useful commands

# -Hostname.

echo -e "\e[35;42m***** HOSTNAME  *****\e[0m"
hostname

# -File system disk space usage:

echo -e "\e[35;42m***** FILE SYSTEM DISK SPACE USAGE *****\e[0m"
df -h

# -Free and used memory in the system:

echo -e "\e[35;42m ***** FREE AND USED MEMORY *****\e[0m"
free

# -Server uptime and load:

echo -e "\e[35;42m***** SERVER UPTIME AND LOAD *****\e[0m"
uptime

# -Logged-in users:

echo -e "\e[35;42m***** CURRENTLY LOGGED USERS *****\e[0m"
who

# -Top 5 processes as far as memory usage is concerned

echo -e "\e[31;43m***** TOP 10 MEMORY-CONSUMING PROCESSES *****\e[0m"

ps -eo %mem,%cpu,comm --sort=-%mem | head -n 11