ling508-20$ bash bmi.sh 68 172
0
ling508-20$ bash bmi5.sh 68 172
22.98
ling508-20$ bash bmi5.sh 68 170
23.52
ling508-20$ echo \n\n
nn
ling508-20$ echo -e \n\n
nn
ling508-20$ echo -e "\n\n"



ling508-20$ echo "\n\n"
\n\n
ling508-20$ bash hw5.sh
weight in kg (lbs): 68
height in cm (in): 172
units kg/lbs: k
22.98
normal
ling508-20$ bash hw5.sh 160 68 lbs
24.32
normal
ling508-20$ bash cmd.sh 1 2 3
1
2
3
ling508-20$ bash cmd.sh 1 2 3
1
2
3
1
2
3
ling508-20$ bash cmd.sh 1 2 3 "this a"
1
2
3
this a
1
2
3
this
a
ling508-20$ 
ling508-20$ mkdir tmp
ling508-20$ cd tmp
tmp$ touch f{1,2,3,4,5}.jpg
tmp$ ls
f1.jpg	f2.jpg	f3.jpg	f4.jpg	f5.jpg
tmp$ ls -l
total 0
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f1.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f2.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f3.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f4.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f5.jpg
tmp$ for f in *.jpg; do echo $f; done
f1.jpg
f2.jpg
f3.jpg
f4.jpg
f5.jpg
tmp$ for f in *.jpg; do echo -n $f; done
f1.jpgf2.jpgf3.jpgf4.jpgf5.jpgtmp$ for f in *.jpg; do ls $f; done
f1.jpg
f2.jpg
f3.jpg
f4.jpg
f5.jpg
tmp$ ls f1.jpg
f1.jpg
tmp$ ls -l f1.jpg


tmp$ ls -l f1.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f1.jpg
tmp$ for f in *.jpg; do ls -l $f; done
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f1.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f2.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f3.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f4.jpg
-rw-r--r--  1 sandiway  staff  0 Sep 17 12:54 f5.jpg
tmp$ cp f1.jpg g1.jpg
tmp$ ls
f1.jpg	f2.jpg	f3.jpg	f4.jpg	f5.jpg	g1.jpg
tmp$ rm g1.jpg
tmp$ for f in *.jpg; do cp $f $f.bak; done
tmp$ ls
f1.jpg		f2.jpg		f3.jpg		f4.jpg		f5.jpg
f1.jpg.bak	f2.jpg.bak	f3.jpg.bak	f4.jpg.bak	f5.jpg.bak
tmp$ for f in *.jpg do echo $f done
> ;
-bash: syntax error near unexpected token `;'
tmp$ for f in *.jpg; do echo $f done










tmp$ for f in *.jpg; do echo $f done
> ;
-bash: syntax error near unexpected token `;'
tmp$ for f in *.jpg; do echo $f done;


























tmp$ for f in *.jpg; do echo $f;
> done
f1.jpg
f2.jpg
f3.jpg
f4.jpg
f5.jpg
tmp$ ls
f1.jpg		f2.jpg.bak	f4.jpg		f5.jpg.bak
f1.jpg.bak	f3.jpg		f4.jpg.bak	line.sh
f2.jpg		f3.jpg.bak	f5.jpg
tmp$ more line.sh
#!/bin/bash
line=""
while true
do
    read -p "Next word: " word
    line="$line $word"
    if [ ${#line} -gt 30 ]
        then break
    fi
done
echo ${#line}:$line
exit 0
tmp$ bash line.sh
Next word: This
Next word: is
Next word: a
Next word: test
Next word: of
Next word: this
Next word: shell
Next word: script
36: This is a test of this shell script
tmp$ 
tmp$ bash line.sh
Next word: Next
Next word: time
Next word: we
Next word: try
Next word: this
Next word: there
Next word: will
33:.Next.time.we.try.this.there.will
tmp$ bash line.sh
Next word: This
Next word: time
Next word: we're
Next word: testing
Next word: if \.
34:\.This\.time\.we're\.testing\.if .
tmp$ 













tmp$ bash line.sh
Next word: checking
Next word: the
Next word: dollar
Next word: sign
Next word: to
Next word: see
32:$checking$the$dollar$sign$to$see
tmp$ 





















tmp$ bash sum.sh 1 3 5 7
16
tmp$ more sum.sh
#!/bin/bash
sum=0
while [ $# -ne 0 ]
do
    ((sum=sum+$1))
    shift
done
echo $sum
exit 0
tmp$ echo x{1,2}
x1 x2
tmp$ echo x{1,2}y
x1y x2y
tmp$ ls
f1.jpg		f2.jpg.bak	f4.jpg		f5.jpg.bak
f1.jpg.bak	f3.jpg		f4.jpg.bak	line.sh
f2.jpg		f3.jpg.bak	f5.jpg		sum.sh
tmp$ ls f?.jpg
f1.jpg	f2.jpg	f3.jpg	f4.jpg	f5.jpg
tmp$ touch f22.jpg
tmp$ ls f??.jpg
f22.jpg
tmp$ ls f*.jpg
f1.jpg	f2.jpg	f22.jpg	f3.jpg	f4.jpg	f5.jpg
tmp$