# Cheatsheet ###### tags: `engineering`, `shell` ## :memo: Linux ### 1. disk space ```shell=1 df -h sudo du -xh --max-depth=1 . | sort -rh | head -n 11 - | sed 1d ``` ### 2. vim ```shell=1 :%s/^,//ng ``` It will get the lines count which start with `,`, like `3 matches on 3 lines`. ```shell=1 :g/keyword/d ``` It will delete all lines contains `keyword`. ```shell=1 :set list ``` Show the `^` and `$` for each line. ```shell=1 :g/^s*$/d ``` Delete empty lines. --- [ToC] :::info :pushpin: [HackMD Tutorials](https://hackmd.io/c/tutorials) ::: - `LaTeX` for formulas $$ x = {-b \pm \sqrt{b^2-4ac} \over 2a} $$ - Embed YouTube Videos {%youtube PJuNmlE74BQ %}