Day 14 – Archiving & Compression in Linux
Key difference:
tar → Creates archive
gzip / bzip2 / xz → Compress archive
Common usage:
tar -czvf backup.tar.gz
Use gzip for speed.
Use xz for better compression. #LinuxTeck #Linux #DevOps #ServerManagement #Troubleshooting #LinuxAdmin #linuxcommands #LinuxAdministration #linuxtraining #LinuxBasics #linuxtips #ITOperations #SysAdmin #SysAdminLife #SystemAdmin
Key difference:
tar → Creates archive
gzip / bzip2 / xz → Compress archive
Common usage:
tar -czvf backup.tar.gz
Use gzip for speed.
Use xz for better compression. #LinuxTeck #Linux #DevOps #ServerManagement #Troubleshooting #LinuxAdmin #linuxcommands #LinuxAdministration #linuxtraining #LinuxBasics #linuxtips #ITOperations #SysAdmin #SysAdminLife #SystemAdmin
If AI Is the Future, Linux Is the Engine
Most AI training clusters run on Linux.
Most cloud infrastructure runs on Linux.
Most supercomputers run on Linux.
AI is application-layer innovation.
Linux is infrastructure-layer stability.
Learn foundations, not just trends.
#LinuxTeck #Linux #DevOps #ServerManagement #Troubleshooting #LinuxAdmin #linuxcommands #LinuxAdministration #linuxtraining #LinuxBasics #linuxtips #ITOperations #SysAdmin #SysAdminLife #AI #Technology
Most AI training clusters run on Linux.
Most cloud infrastructure runs on Linux.
Most supercomputers run on Linux.
AI is application-layer innovation.
Linux is infrastructure-layer stability.
Learn foundations, not just trends.
#LinuxTeck #Linux #DevOps #ServerManagement #Troubleshooting #LinuxAdmin #linuxcommands #LinuxAdministration #linuxtraining #LinuxBasics #linuxtips #ITOperations #SysAdmin #SysAdminLife #AI #Technology
If You Can Explain These 8 Linux Networking Commands, You’re Job-Ready.
https://www.linuxteck.com/8-linux-networking-commands/
ip a
ip r
ping
traceroute
ss
curl
dig
tcpdump
Commands don’t make professionals.
Thinking does.
https://www.linuxteck.com/8-linux-networking-commands/
ip a
ip r
ping
traceroute
ss
curl
dig
tcpdump
Commands don’t make professionals.
Thinking does.
❤1
Networking Protocols Explained as a Packet’s 5-Stop Journey (No Code Required)
✅ Caption:
Most people memorize networking.
Few understand the story.
Every packet goes through 5 stages:
1️⃣ FIND – DNS, ARP
2️⃣ JOIN – DHCP, 802.1X
3️⃣ TALK – TCP, UDP, HTTP, ICMP, QUIC
4️⃣ TRUST – TLS, SSH, VPN, Kerberos
5️⃣ OBSERVE – SNMP, Syslog, NetFlow, NTP
If you can explain this flow clearly, you're thinking like an engineer — not just repeating definitions.
Which stage do you see most people misunderstand?
#Networking #Linux #DevOps #CyberSecurity #ITInfrastructure #SRE #CloudComputing
✅ Caption:
Most people memorize networking.
Few understand the story.
Every packet goes through 5 stages:
1️⃣ FIND – DNS, ARP
2️⃣ JOIN – DHCP, 802.1X
3️⃣ TALK – TCP, UDP, HTTP, ICMP, QUIC
4️⃣ TRUST – TLS, SSH, VPN, Kerberos
5️⃣ OBSERVE – SNMP, Syslog, NetFlow, NTP
If you can explain this flow clearly, you're thinking like an engineer — not just repeating definitions.
Which stage do you see most people misunderstand?
#Networking #Linux #DevOps #CyberSecurity #ITInfrastructure #SRE #CloudComputing
Channel name was changed to «LinuxTeck - Linux Sysadmins Community - RHEL, CentOS, Ubuntu, Debian & Rocky Linux»
Most beginners think shell scripting is “coding.”
It’s not.
It’s this:
🟢 Stop repeating tasks
🟢 Save time daily
🟢 Automate boredom
🟢 Respect your own time
The moment you write your first script that saves you 10 minutes a day…
Linux becomes yours.
Save this if you’re starting your Linux journey.
#LinuxLife #ShellScripting #DevOpsJourney #AutomationMindset #TechGrowth #LinuxTeck
It’s not.
It’s this:
🟢 Stop repeating tasks
🟢 Save time daily
🟢 Automate boredom
🟢 Respect your own time
The moment you write your first script that saves you 10 minutes a day…
Linux becomes yours.
Save this if you’re starting your Linux journey.
#LinuxLife #ShellScripting #DevOpsJourney #AutomationMindset #TechGrowth #LinuxTeck
Linux Runlevels vs Systemd Targets Explained
Description
Older Linux systems used runlevels to control boot modes.
Modern Linux uses systemd targets instead.
This infographic explains the mapping between runlevels and systemd targets and shows how legacy commands like init still work under systemd.
Perfect quick reference for Linux administrators and DevOps engineers.
Description
Older Linux systems used runlevels to control boot modes.
Modern Linux uses systemd targets instead.
This infographic explains the mapping between runlevels and systemd targets and shows how legacy commands like init still work under systemd.
Perfect quick reference for Linux administrators and DevOps engineers.
The 5-Step System for Learning Technical Skills Faster
Caption
Learning technical tools becomes easier when you follow a clear structure.
Instead of jumping randomly between tutorials and documentation, use this framework:
1️⃣ Define your goal
2️⃣ Gather the right resources
3️⃣ Preview the topic
4️⃣ Build understanding gradually
5️⃣ Apply the knowledge in real work
Structure transforms curiosity into real capability.
Caption
Learning technical tools becomes easier when you follow a clear structure.
Instead of jumping randomly between tutorials and documentation, use this framework:
1️⃣ Define your goal
2️⃣ Gather the right resources
3️⃣ Preview the topic
4️⃣ Build understanding gradually
5️⃣ Apply the knowledge in real work
Structure transforms curiosity into real capability.
🐧 5 Practical Linux Shell Scripts That Save Time
Simple scripts for real everyday problems:
⏰ Terminal Reminder — read a time and message, sleep, then echo it back
💾 Find Largest File — one line to find what's eating your disk
📂 Bulk File Rename — loop with a proper counter variable
🧹 Clean Downloads — find and delete files older than 7 days
🌐 Internet Check — if/then/else before any network script runs
All commands verified and tested. Save for later. 👇
Simple scripts for real everyday problems:
⏰ Terminal Reminder — read a time and message, sleep, then echo it back
💾 Find Largest File — one line to find what's eating your disk
📂 Bulk File Rename — loop with a proper counter variable
🧹 Clean Downloads — find and delete files older than 7 days
🌐 Internet Check — if/then/else before any network script runs
All commands verified and tested. Save for later. 👇
Caption:
🐧 7 Linux Commands Every Engineer Should Understand Deeply
These aren't just commands — each one teaches a different way to think about systems:
🔎 grep — cut through logs and noise instantly
⚙️ awk — extract and reshape data in one line
🔐 chmod — permissions are a design decision, not a formality
⏱️ cron — reliable automation starts with a schedule
🔄 rsync — backups are engineering discipline, not optional
📊 htop — visibility is the first step to any fix
⚡️ sudo — elevated access demands full understanding
Save this. Study one per week. 👇
🐧 7 Linux Commands Every Engineer Should Understand Deeply
These aren't just commands — each one teaches a different way to think about systems:
🔎 grep — cut through logs and noise instantly
⚙️ awk — extract and reshape data in one line
🔐 chmod — permissions are a design decision, not a formality
⏱️ cron — reliable automation starts with a schedule
🔄 rsync — backups are engineering discipline, not optional
📊 htop — visibility is the first step to any fix
⚡️ sudo — elevated access demands full understanding
Save this. Study one per week. 👇
Caption:
🐧 7 Types of Files in Linux — Know All of Them
Most people only know 2. Here are all 7 with their ls -l identifiers:
📄 - Regular Files — text, binaries, scripts, images
📁 d Directory Files — the folder structure of your system
⌨️ c Character Devices — keyboards, terminals → /dev/
💽 b Block Devices — hard drives, SSDs, USB → /dev/
🔗 p Named Pipes (FIFOs) — inter-process data channels
🌐 s Sockets — local and network process communication → /var/run/
🔀 l Symbolic Links — filesystem shortcuts and version managers
Next time you run ls -l, you'll know exactly what you're looking at.
Save this one. 👇
🐧 7 Types of Files in Linux — Know All of Them
Most people only know 2. Here are all 7 with their ls -l identifiers:
📄 - Regular Files — text, binaries, scripts, images
📁 d Directory Files — the folder structure of your system
⌨️ c Character Devices — keyboards, terminals → /dev/
💽 b Block Devices — hard drives, SSDs, USB → /dev/
🔗 p Named Pipes (FIFOs) — inter-process data channels
🌐 s Sockets — local and network process communication → /var/run/
🔀 l Symbolic Links — filesystem shortcuts and version managers
Next time you run ls -l, you'll know exactly what you're looking at.
Save this one. 👇
5 Reasons the Linux Terminal Makes You a Better Engineer
GUI shows you what someone designed for you.
The terminal shows you everything your system can do.
Here is what you gain the moment you commit to the terminal:
⚡️ Reason 01 — Raw Speed
sudo apt install firefox — one line, done. No wizard. No restart.
🤖 Reason 02 — Automate Once, Repeat Forever
bash backup.sh — any repetitive task scripted and scheduled.
🔍 Reason 03 — Full System Visibility
ps aux | grep nginx — see every process. No hidden layers.
🌐 Reason 04 — Control Any Machine Remotely
ssh user@server-ip — inside any server in the world instantly.
🧠 Reason 05 — You Learn How Computers Actually Work
ls -lh /proc/ — processes, permissions, networking. All visible.
The terminal does not just run commands.
It builds the engineer using it. 💪
GUI shows you what someone designed for you.
The terminal shows you everything your system can do.
Here is what you gain the moment you commit to the terminal:
⚡️ Reason 01 — Raw Speed
sudo apt install firefox — one line, done. No wizard. No restart.
🤖 Reason 02 — Automate Once, Repeat Forever
bash backup.sh — any repetitive task scripted and scheduled.
🔍 Reason 03 — Full System Visibility
ps aux | grep nginx — see every process. No hidden layers.
🌐 Reason 04 — Control Any Machine Remotely
ssh user@server-ip — inside any server in the world instantly.
🧠 Reason 05 — You Learn How Computers Actually Work
ls -lh /proc/ — processes, permissions, networking. All visible.
The terminal does not just run commands.
It builds the engineer using it. 💪