today-i-learnt

TIL - Today I Learned

From an awesome idea got from jbranchaud, a repository to collect all the today I learned about the more different topics I learned.

android

• Opo factory restore on 2016-04-30

ansible

• Reboot on system upgrade on 2016-03-10

anyenv

• Change language version on 2016-02-26

crystal

• Discovery on 2016-02-23

devops

• Anyenv on 2016-02-23

git

• Export patch from stash on 2016-12-23
• Export subtree with history on 2020-02-04
• Import history in another repo on 2020-02-04

golang

• Use module fork on 2019-12-13
• Template output as string on 2020-07-30
• Create tar.gz file on 2020-10-24

inkscape

• Resize svg drawing to canvas on 2016-12-06

kubernetes

• Recover a crashed node on 2020-04-23
• Delete all pods by search on 2020-04-23
• Restart pods in deployment on 2020-11-02
• Delete all pods not in running state on 2021-03-05

lightdm

• Hide user from login screen on 2018-04-06

linux

• Convert pdf to image on 2021-01-13
• Extract page from pdf on 2021-01-13

make

• Debugging on 2021-07-16

mysql

• Mysqldump permissions on 2016-03-15

postgresql

• Specify connection application name on 2019-10-10

rails

• Vulnerability scanner on 2016-02-26
• Security on 2016-02-26
• Rake tasks specs on 2016-03-17

ruby

• Hide ruby deprecation warnings on 2020-08-29

shell

• Check website response time on 2016-02-25
• Create huge file on 2020-08-11

sysadmin

• All mac addresses in LAN on 2016-03-08
• Uefi external hd boot on 2016-04-20
• Change file timestamps on 2016-04-20
• Get debconf available selections on 2016-07-12
• See bandwith usage per process on 2016-12-06
• Show processes using files on 2016-12-07
• How to download certificate from server on 2016-12-23
• Create encrypted partition on 2017-05-18
• View last successfull and failed login attempts on 2016-09-29
• Disable systemd service manually on 2017-06-23
• Show ssh key fingerprint on 2017-11-07
• Test starttls smtp auth on 2017-12-12
• Change ssh key passphrase on 2018-02-15
• Change gpg expire date on 2018-03-10
• Search gpg in keyserver on 2018-03-10
• Send gpg key to keyserver on 2018-03-10
• List files in deb package on 2019-10-11
• Graceful nginx shutdown on 2020-11-20
• Querying unix sockets with curl on 2021-02-10

terraform

• Modules depends on on 2020-05-20

video

• Concatenating video files on 2016-04-20
• Converting video files on 2017-03-21
• Cut video with ffmpeg on 2017-11-07
• Rotate video on 2017-11-07

vim

• Read from stdin on 2020-09-25
• Send vim buffer to command on 2020-09-25
• Editing pipes (with $editor) on 2020-09-25