diff --git a/zk/Delete_and_replace_characters_from_stdout_with_tr.md b/zk/Delete_and_replace_characters_from_stdout_with_tr.md
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+---
+tags:
+  - Linux
+  - procedural
+---
+
+# Delete and replace characters from stdout with `tr`
+
+I used the following pattern to remove new lines and blank spaces:
+
+```sh
+tr -ds '\n'  " "
+```
+
+Everything after the flags are considered an array. You can multiply actions on
+the same target or attack two different targets such as is the case with this
+example.
+
+First flag is "delete". In the exsample this deletes new lines. Second flag is
+"squeeze repeats". In the example this removes all repeated spaces.
+
+```sh
+ls | tail | tr -s a z
+
+# zpple.txt
+# pzckzge.json
+```
+
+In this example, squeeze replaces all instances of 'a' with 'z'
diff --git a/zk/Truncate_stdout_with_cut.md b/zk/Truncate_stdout_with_cut.md
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+---
+tags:
+  - Linux
+  - procedural
+---
+
+# Truncate stdout with `cut`
+
+Pass in `-c` to truncate characters or `-b` to truncate bytes.
+
+Return the first three characters of "Thomas":
+
+```sh
+echo 'thomas' | cut -c -3
+# tho
+```
+
+Return "Thomas" minus the first three chracters:
+
+```sh
+echo 'thomas' | cut -c 3-
+# omas
+```