From 418ee1a7616bb4c82dc18741dd093657768b1e76 Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <m@m-chrzan.xyz>
Date: Fri, 9 Apr 2021 11:36:27 +0200
Subject: Add text utils sheet

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 text-utils.md | 29 +++++++++++++++++++++++++++++
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 create mode 100644 text-utils.md

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+# Various small text manipulation utilities
+
+## `cut`
+
+Select fields from each line based on some delimeter
+
+    cut -d <delimiter> -f <list of fields>
+
+Setting a different output delimiter:
+
+    --output-delimiter <delimiter>
+
+## `comm`
+
+    comm file1 file2
+
+Outputs three columns:
+
+1. Lines unique to `file1`
+2. Lines unique to `file2`
+3. Lines in both files
+
+Assumes files are sorted.
+
+Suppress a column with e.g. `-1`.
+
+### Intersection of two files
+
+    comm -12 file1 file2
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