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[twpd/master.git] / sed.md

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+---
+title: sed
+category: CLI
+layout: 2017/sheet
+intro: |
+  Here's home hints on using sed.
+---
+
+### In place replacements
+
+#### In GNU sed: use `-i` without arg.
+
+```bash
+sed -i -e 's/foo/bar/' example.md
+```
+
+#### In OSX, `-i ''` is required.
+
+```bash
+sed -i '' -e 's/foo/bar/' example.md
+```
+
+### File regions
+
+#### Print until a certain line is met
+
+```bash
+sed '/begin api/q'
+```
+
+#### Print until a certain line is met, but not that line
+
+```bash
+sed '/^# begin/,$d'
+```
+
+#### Print everything after a given line
+
+```bash
+sed -n '/end api/,$p'
+```