Extract login name earlier in scripts so it works

ex02/find_sh.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-find . -type f -name "*.sh" | xargs -I{} basename {} | sed 's/\.sh$//g'
+find . -type f -name "*.sh" -exec basename {} .sh \;

ex03/count_files.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-find . | wc -l
+find . -type f -o -type d | wc -l

ex04/MAC.sh

@@ -1,3 +1,3 @@
 #!/bin/sh
 
-ifconfig -a | grep ether | awk '{ print $2 }'
+ifconfig | grep ether | awk '{ print $2 }'

ex07/r_dwssap.sh

@@ -1,16 +1,19 @@
 #!/bin/sh
 
+# FT_LINE1=7
+# FT_LINE2=15
+
 FT_DIFF=$((FT_LINE2 - FT_LINE1 + 1))
 
 cat /etc/passwd |
+	# Not perfect, will discard line that contain a #
+	# anywhere in the line, not just the beginning
 	grep -v '#' |
 	sed '1d' |
 	awk 'NR % 2 == 1' |
-	rev |
-	sort -r |
-	rev |
 	cut -d':' -f1 |
 	rev |
+	sort -r |
 	head -"${FT_LINE2}" |
 	tail -"${FT_DIFF}" |
 	tr '\n' ':' |