Differences

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--- bash_scripting [2017/04/25 17:43] – mgupton
+++ bash_scripting [2017/07/11 19:21] (current) – mgupton
@@ Line 1: / Line 1: @@
 ======Bash Scripting======
 ======Conditionals======
-  * The special variable ''?'' has the exit/return value of the last program/command that ran.
+  * The special variable ''$?'' has the exit/return value of the last program/command that ran.
 <code bash>
@@ Line 73: / Line 73: @@
 ======File Manipulation======
 ==Delete a file if it exists.==
-<code>
+<code bash>
 [[ -f "$file" ]] && rm -f "$file"
 </code>
+======File I/O======
+===Read a text file line by line.===
+<code bash>
+#!/bin/bash
+while read line
+do
+    name=$line
+    echo "Text read from file - $name"
+done < $1
+</code>
+===Read each line of a file as a CSV record.===
+<code bash>
+while IFS=, read col1 col2
+do
+    echo "I got:$col1|$col2"
+done < myfile.csv
+</code>
+======Resources======
+  * [[http://wiki.bash-hackers.org/|The Bash Hackers Wiki]]