solution for ex10

q1

@@ -0,0 +1,21 @@
+#q1
+
+#a
+awk '{print NR}' aliceinwonderland.txt | tail -1
+
+#b
+grep -o ' Alice ' aliceinwonderland.txt | awk '{a[$1]++} END {for (k in a) print a[k]}'
+#another option only with awk
+#awk '/ Alice /{count++} END {print count}' aliceinwonderland.txt 
+
+#c
+awk '{for (i=1; i<=NF; i++) a[$i]++} END {for (word in a) if (a[word] == 1) print word}' aliceinwonderland.txt 
+#another option
+#grep -o '[a-zA-Z]\+' aliceinwonderland.txt | sort | uniq -c | awk '$1 == 1 {print $2}'
+
+#d
+grep -o '[a-zA-Z]\+' aliceinwonderland.txt | awk '{a[$1]++} END {for (k in a) print a[k], k}' |sort -n | tail -5
+
+#e
+awk '{for (i=1; i<=NF; i++) {total_chars += length($i); total_words++}} END {print total_chars / total_words}' aliceinwonderland.txt
+

q2

@@ -0,0 +1,12 @@
+#q2
+#a
+sed -n '/Sherlock\|Holmes/p' sherlockholmes.txt | wc -l
+#b 
+sed -n '/Sherlock\|Holmes/p' sherlockholmes.txt sherlockholmes.txt | grep -oE 'Sherlock|Holmes' | wc -l
+#c
+sed 's/^/hello /' sherlockholmes.txt
+#d
+sed -E 's/\b[A-Z][a-z]{1,}\s[A-Z][a-z]{1,}\b/yarin/g' sherlockholmes.txt
+#e
+sed -e 's/(/[/g' -e 's/)/]/g' sherlockholmes.txt
+