Some useful linux terminal commands

Here are some Linux terminal commands that I find useful for me.

• create file

touch file.txt

• create and open a file with nano

nano file.txt

• Read the content of a file (3 different approaches)

cat file.txt
more largefile.txt
less largefile.txt

• read the first 5 lines of a file

head -n 5 file.txt

• read the last 5 lines of a file

tail -n 5 file.txt

• display running processes

ps aux

• display dynamic real-time view of running processes

top

• check disk space usage

df -h

• check file and directory sizes

du -sh *

• search for text in files

grep "search_text" file.txt

• search recursively in directories

grep -r "text" /path/

• find files and directories

find /path -name "filename"

• count lines, words, and characters

wc file.txt

• compare two files

diff file1.txt file2.txt

• change file permissions

chmod 755 script.sh

• change file owner

chown user:group file.txt

• check network connectivity

ping google.com

• display network connections

netstat -tulnp

• download files from the web

wget https://example.com/file.zip