Linux hw-uger-1000 2.6.32-642.el6.x86_64 #1 SMP Wed Apr 13 00:51:26 EDT 2016 x86_64 x86_64 x86_64 GNU/Linux

GNU bash, version 4.1.2(1)-release (x86_64-redhat-linux-gnu)
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>[/ICODE]

Question 3: show the first 40 lines of output from this command [ICODE]shell -xv script_name > log 2>&1

module () {  eval `/usr/bin/modulecmd bash $*`
}
#!/bin/ksh
i=0
+ i=0
last=0
+ last=0
for file in *header
do	case "$i" in
	(0)	f1=$file
		i=1
		;;
	(1)	./match.pl -f "$file" -g "$f1" -k 1 -l 1 -v "5 6 7" > $((out = last))
		i=2
		;;
	(2)	out=$((1 - last))
		./match.pl -f "$file" -g $last -k 1 -l 1 -v "5 6 7" > $out
		last=$out
		;;
	esac
done
+ for file in '*header'
+ case "$i" in
+ f1=9477885102_R01C01header
+ i=1
+ for file in '*header'
+ case "$i" in
+ ./match.pl -f 9477885102_R01C02header -g 9477885102_R01C01header -k 1 -l 1 -v '5 6 7'
+ i=2
+ for file in '*header'
+ case "$i" in
+ out=1
+ ./match.pl -f 9477885102_R02C01header -g 0 -k 1 -l 1 -v '5 6 7'
Must specify file one using -g switch
+ last=1
+ for file in '*header'
+ case "$i" in
+ out=0
+ ./match.pl -f 9477885102_R02C02header -g 1 -k 1 -l 1 -v '5 6 7'
+ last=0

type combining.executable
printf '%s\n' "$PATH"
ls -l 0 1 log outfile
ls -l *header|head -n 20

ls -l "$SHELL"

-rwxr-xr-x 1 root root 941880 Dec 22  2015 /bin/bash*

type ksh

-bash: type: ksh: not found