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#php
#kotlin
#bash
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PHP
Tail Last N Lines of File
Efficiently read the last N lines of a (possibly large) file by seeking to the end and walking backwards in fixed-size chunks. Avoids loading the entire file into memory.
@admin
Bash
Most-Modified Files in Repo
Find the hottest files in a git history — useful for spotting hotspots that need refactoring or extra test coverage.
Bash
Find Commit That Introduced a String
`git log -S` (the "pickaxe") finds commits whose diff added or removed a given string. The fastest way to answer "when did this line first appear?"