Linux / Shell Script
https://www.youtube.com/watch?v=6ue2luv2I-Y
https://www.youtube.com/watch?v=l0QGLMwR-lY
https://www.youtube.com/watch?v=hOACNkPpIMI
https://www.youtube.com/watch?v=sdQufg-n4zE
https://www.youtube.com/watch?v=tOcfeQrJL_E
https://www.youtube.com/watch?v=GzIFoJBVwh8
https://www.youtube.com/watch?v=IxApf1YtkJU
https://www.youtube.com/watch?v=WDjbMucvEmk
https://www.youtube.com/watch?v=E5ylHeENN3o
General
https://www.youtube.com/watch?v=mSO37hFadvE
https://www.youtube.com/watch?v=cODCpXtPHbQ
https://www.youtube.com/watch?v=v5e_PasMdXc
https://www.youtube.com/watch?v=-WEpWH1NHGU
https://www.youtube.com/watch?v=KWOSGVtHWqA
Oracle
https://www.youtube.com/watch?v=o6kwgGBr_BE&list=PL3fS-Jh9cS0wIL2B-mhAttFJ8u0ccwMc8&index=3&pbjreload=101
https://www.youtube.com/watch?v=s8m_R9_NtTI
https://www.youtube.com/playlist?list=PLb1qVSx1k1Vr0v4wVyvT3GEuA0J0M4xBm
https://www.youtube.com/c/OracleDatabaseProductManagement/playlists
Postgresql
https://www.youtube.com/playlist?list=PLmhoQ1nd8VnRD4XcLsBooxIvnPpEs67im
https://www.youtube.com/watch?v=ABwD8IYByfk
Cassandra
https://www.youtube.com/watch?v=ZkwkgurQyHg
https://www.youtube.com/watch?v=Mvsy2DZhKSw
https://www.youtube.com/watch?v=ejnS81dABdM&t=670s
https://www.youtube.com/watch?v=PTOxb3a8g1k
MySql
https://www.youtube.com/watch?v=Ly3btyYo5UY&pbjreload=101
https://www.youtube.com/watch?v=sjqyH-o8HlE&list=PLpyc33gOcbVD32OoxHXVzkPP9921roqoV&index=2
https://www.youtube.com/playlist?list=PL03-vZ6WiQ5vaCNgsPopzH5yO4xBQcFX9
GIT
https://www.youtube.com/watch?v=8Xo3l1zv41I
Networking
https://www.youtube.com/watch?v=Eg6ibIGxeGc