Reading 03: Filters

reading03/Makefile

@@ -0,0 +1,11 @@
+test:
+	@$(MAKE) -sk test-all
+
+test-all:	test-scripts test-filters
+
+test-scripts:
+	curl -sLO https://www3.nd.edu/~pbui/teaching/cse.20289.sp25/static/txt/reading03/test_filters.sh
+	chmod +x test_filters.sh
+
+test-filters:
+	./test_filters.sh

reading03/filters.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+
+q1_answer() {
+    # TODO: Complete pipeline
+    echo "Read the fine manual" | tr '[:lower:]' '[:upper:]'.
+}
+
+q2_answer() {
+    # TODO: Complete pipeline
+    echo "BTW, I use Arch" | sed 's/Arch/Pop/'
+}
+
+q3_answer() {
+    # TODO: Complete pipeline
+    echo "     Yes, do as I say" | sed 's/^ *//'
+}
+
+q4_answer() {
+    # TODO: Complete pipeline
+    curl -sL https://yld.me/raw/yWh | grep '^root' | cut -d: -f7
+}
+
+q5_answer() {
+    # TODO: Complete pipeline
+    curl -sL https://yld.me/raw/yWh |  grep ':4[0-9]*7:'
+}
+
+q6_answer() {
+    # TODO: Complete pipeline
+    curl -sL https://yld.me/raw/yWh | sed 's#/bin/\(sh\|bash\|csh\|tcsh\)#/bin/zsh#g' | grep zsh
+}