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Essential command-line utilities that will boost your productivity and make sysadmin tasks easier.

1. htop - Process Monitor

sudo apt install htop
htop

2. tmux - Terminal Multiplexer

sudo apt install tmux
tmux new -s mysession

3. rsync - File Synchronization

rsync -avz /source/ user@remote:/destination/

4. ss - Network Statistics

ss -tulpn

5. lsof - List Open Files

lsof -i :80

6. dig - DNS Queries

dig example.com

7. curl - HTTP Client

curl -I https://example.com

8. jq - JSON Processor

curl api.example.com | jq '.results[0].name'

9. find - File Finder

find /var -name "*.log" -mtime +7

10. awk/sed - Text Processing

awk -F: '{print $1}' /etc/passwd