From c10380bb3486d256b6544454fe1e6b622cbdae70 Mon Sep 17 00:00:00 2001
From: Malin Freeborn <malinfreeborn@tutamail.com>
Date: Sun, 15 Nov 2020 21:49:17 +0100
Subject: [PATCH] formatting

---
 basics/archives.md              |  2 +-
 basics/bash.md                  | 22 ++++++++++++++++++----
 distros/arch/arch_pi_install.md |  2 +-
 3 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/basics/archives.md b/basics/archives.md
index e849d4f..d2279b3 100644
--- a/basics/archives.md
+++ b/basics/archives.md
@@ -50,7 +50,7 @@ Compressing all Latex Files in /home/.
 
 > sudo find ~ -maxdepth 4 -name "*.txt" | xargs tar cvf latex-bundle.tar.gz
 
-## `zip
+## `zip`
 
 Install `zip`.
 
diff --git a/basics/bash.md b/basics/bash.md
index 46c87f0..3124823 100644
--- a/basics/bash.md
+++ b/basics/bash.md
@@ -22,7 +22,7 @@ Regular expression characters include:
 
 As a result, grep cannot read these characters as literal characters unless they are escaped.  E.g.
 
-> grep wtf\? log.txt
+> grep wtf\\? log.txt
 
 ... will search the string 'wtf?' in the file log.txt.  Another version is egrep (now used with 'grep -e') which uses more characters as special characters, or fgrep, which treats all characters as literal strings.
 
@@ -46,10 +46,20 @@ Export this to the entire system using:
 
 > export colour=blue
 
-# Search commands
+# Search for Programs
+
+Search for commands relevant to `cat`.
 
 > apropos cat
 
+Show files used in the `cat` program.
+
+> whereis cat
+
+Show *which* file is the actual code which runs when you type `cat`:
+
+> which cat
+
 # Working with Text
 
 Convert every tab to ten spaces.
@@ -76,9 +86,13 @@ The sort function arranges lines alphabetically.  Use -r to reverse and -n to so
 
 # Sed
 
-> sed -i s/hey/hoi/g greetings.txt
+Change all examples of hey to hoi in greetings and show that output (does not change file).
 
-Edit all examples of hey to hoi in greetings and print that to the file.
+> sed 's/hey/hoi/g greetings.txt'
+
+Change each example of 'cat' to 'dog' in the file 'animals.md'.
+
+> sed 's/cat/dog/g' animals.md
 
 # Measurement
 
diff --git a/distros/arch/arch_pi_install.md b/distros/arch/arch_pi_install.md
index ce417fb..3b2b10f 100644
--- a/distros/arch/arch_pi_install.md
+++ b/distros/arch/arch_pi_install.md
@@ -28,7 +28,7 @@ Download and extract the root filesystem (as root, not via sudo):
 
 Move boot files to the first partition:
 
-> mv root/boot/* boot
+> mv root/boot/\* boot
 > Unmount the two partitions:
 > umount boot root