From 8eda2266bc26d4abc81db48b9ce5a0d56a66ddea Mon Sep 17 00:00:00 2001
From: summer-wu <wushuyu90@hotmail.com>
Date: Wed, 7 Oct 2015 11:34:01 +0800
Subject: [PATCH] Create tr

---
 cheat/cheatsheets/tr | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 cheat/cheatsheets/tr

diff --git a/cheat/cheatsheets/tr b/cheat/cheatsheets/tr
new file mode 100644
index 0000000..b462467
--- /dev/null
+++ b/cheat/cheatsheets/tr
@@ -0,0 +1,21 @@
+#replace : with new line
+echo $PATH|tr ":" "\n" #equivalent to:
+echo $PATH|tr -t ":" \n 
+
+#complement "aa"
+echo aabbccd |tr -c "aa" 1
+#output: aa11111%
+#tip: Complement meaning keep aa,all other is replace with 1
+
+#complement "ab\n"
+echo aabbccd |tr -c "ab\n" 1
+#output: aabb111 with new line
+
+#preserve all alpha(-c),sequeeze mode instead of character mode
+echo $PATH|tr -cs "[:alpha:]" "\n" 
+
+#ordered list to unordered list
+echo "1 /usr/bin\n2 /bin" |tr -cs "/\n[:alpha:]" "+"
+
+#remove all occurance of "ab"
+echo aabbcc |tr -d "ab"