Top Tech Tip!
Your ICs will have a higher test pass rate if you test them as what they actually are, rather than what you thought you grabbed.
(No, I didn't just test a bunch of MOSFETs as if they were power-monitoring chips. Shut up. No, *you* smell.)
Package management is one of those things every Linux admin should know cold.
Search for a package: dnf search packagename
Install it: dnf install packagename
Check what's installed: rpm -qa | grep packagename
Remove it cleanly: dnf remove packagename
Your package manager is your best friend. Treat it accordingly.
#Linux #SysAdmin #PackageManagement #TechTip #RHEL
#TechTipThursday
Package management is one of those things every Linux admin should know cold.
Search for a package:
dnf search packagename
Install it:
dnf install packagename
Check what's installed:
rpm -qa | grep packagename
Remove it cleanly:
dnf remove packagename
Your package manager is your best friend. Treat it accordingly.
#Linux #SysAdmin #PackageManagement #TechTip #RHEL #RockyLinux
SSH is how you get things done remotely. Know it cold.
Connect to a remote host: ssh user@hostname
Copy files securely: scp file.txt user@hostname:/path/
Generate SSH keys: ssh-keygen -t ed25519
Passwords are fine. Keys are better. Use keys.
#Linux #SysAdmin #SSH #Security #TechTip #TechTipThursday
Your Linux host is only as secure as you make it.
Check who's logged in right now: who
See open network connections: ss -tulnp
Check for listening services you don't recognize:
systemctl list-units --type=service --state=running
If you can't explain why a service is running, that's your homework.
#Linux #SysAdmin #Security #TechTip
Lock down user accounts on Linux before something else does.
List failed login attempts: lastb
Lock a user account: usermod -L username
Force a password change at next login: chage -d 0 username
Your servers are being probed right now. Act accordingly.
#Linux #SysAdmin #Security #TechTip
#TechTip
I've just seen a IT video saying "I always leave the background as default."
I always change the background & colours to my favourites.
It has a side-benefit: occasionally I have seen a malicious pop-up window trying to get me to do something. It stands out because it's not in my colours
#TechTip
I've just seen a IT video saying "I always leave the background as default."
I always change the background & colours to my favourites.
It has a side-benefit: occasionally I have seen a malicious pop-up window trying to get me to do something. It stands out because it's not in my colours
💡 𝗤𝗨𝗜𝗖𝗞 𝗛𝗔 𝗧𝗜𝗣!
Trigger IDs will clean up your automations instantly!
𝗗𝗼 𝘆𝗼𝘂 𝗮𝗴𝗿𝗲𝗲? 👇
C.
Eric The IT Guy
SquaredTech
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