Adds reading files scripts and update README.md

Author: lucsaito

README.md

@@ -13,4 +13,8 @@ A collection of simple bash scripts.
 2. [Square a number](scripts/squarenumber.sh): A simple function that squares an integer
 
 ## $RANDOM
-1. [Guess number](scripts/guess-number-game.sh): User should guess a number from 1 to 100
+1. [Guess number](scripts/guess-number-game.sh): User should guess a number from 1 to 100
+
+## Reading files
+1. [File reader](scripts/read-line-by-line.sh): The script prints the file content line-by-line
+2. [Multiple files reader](scripts/read-files.sh): Prints the content of all files given by arguments

scripts/read-files.sh

@@ -0,0 +1,23 @@
+#!/bin/bash
+# Lucas Saito, 2021/04/09
+# Usage: bash read-files.sh file1 file2 file3 ...
+#
+# Given "n" arguments(files), the script reads
+# each file's content line-by-line.
+
+
+if [[ $# -eq 0 ]]; then
+	echo "[read-lines]: No arguments were given"
+	exit 0
+else
+	counter=1
+	for file in $@; do
+		echo "[read-lines]: Reading file [$counter/$#]: $file"
+		while read line; do
+
+			echo $line
+		done < $file
+		counter=$((counter+1))
+	done
+fi
+exit 0

scripts/read-line-by-line.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+# Lucas Saito, 2021/04/09
+# Given a file by command line argument,
+# the script will read its content line-by-line
+
+if [[ $# -eq 0 ]]; then
+	echo "No file was inputted"
+	exit 0
+else
+	echo "Reading file: $1"
+	while read line; do
+		echo $line
+	done < $1
+fi
+exit 0