1) Shell one-liners that will immediately do exactly what you want.
From my own experience - tasks that would take me 10 minutes of using mice and file explorer now take only seconds once I became fluent in using basic shell commands and pipe them together. Before becoming professional I naturally didn't have to repeat same and same operation every day just to check something.
2) Use of Automation tools - especially in in webdev. When I was learning stuff myself - pressing F5 to refresh page was basically done hundreds of times. Now I cannot imagine life without browserSync, gulp/bower or puryfiCSS
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Two points that come to my mind:
1) Shell one-liners that will immediately do exactly what you want.
From my own experience - tasks that would take me 10 minutes of using mice and file explorer now take only seconds once I became fluent in using basic shell commands and pipe them together. Before becoming professional I naturally didn't have to repeat same and same operation every day just to check something.
2) Use of Automation tools - especially in in webdev. When I was learning stuff myself - pressing F5 to refresh page was basically done hundreds of times. Now I cannot imagine life without browserSync, gulp/bower or puryfiCSS