Linux for Beginners: Archives, File Search, and Networking | Lesson 8
▶ Linux for Beginners Playlist:
• Linux. Begginer course.
In this lesson, you will learn how Linux handles standard input, standard output, and standard error. We will cover redirection, pipes, tee, /dev/null, and the most useful text filtering tools like grep, sort, uniq, wc, cut, tr, awk, and sed. These are essential Linux basics for shell work, log analysis, and DevOps practice.
00:00 Introduction
00:34 tar
03:56 gzip and zip
07:19 find
11:45 locate
12:45 ip a and ip route
14:53 curl and wget
16:24 ss
17:20 DNS
18:32 traceroute
19:23 ufw
20:52 Why there is no internet
23:05 Summary and What we will study in the next lesson
Commands used in this lesson:
tar -cf project.tar project/ — creates a tar archive from a folder
tar -tf project.tar — shows the contents of a tar archive
tar -xf project.tar — extracts a tar archive
tar -xf project.tar -C /tmp — extracts a tar archive into a specific folder
gzip file.log — compresses a file with gzip
gunzip file.log.gz — unpacks a gzip file
tar -czf project.tar.gz project/ — creates a compressed tar.gz archive
tar -xzf project.tar.gz — extracts a tar.gz archive
zip -r project.zip project/ — creates a zip archive
unzip project.zip — extracts a zip archive
find /etc -name "hosts" — searches for a file by name
find /var/log -size +10M — finds files larger than 10 MB
find . -mtime -1 — finds files changed in the last day
find . -mtime +7 — finds files older than 7 days
ip a — shows network interfaces and IP addresses
ip route — shows routing information
ping 8.8.8.8 — checks connectivity to a remote IP address
ping google.com — checks connectivity and DNS resolution
curl https://example.com
— sends a request and shows the response
curl -I https://example.com
— shows only HTTP response headers
wget https://example.com/file.zip
— downloads a file
ss -tulpn — shows listening ports and network connections
traceroute 8.8.8.8 — shows the path packets take through the network
sudo ufw status — shows firewall status
sudo ufw allow ssh — allows SSH traffic through the firewall
sudo ufw allow 8080 — allows traffic on port 8080
#Linux #Ubuntu #DevOps