The road to mathematics-the basic technology of Distributed Computing-linux/unix (5)

Shell command-line arguments

-bash-4.2$ Cat test1.sh
#!/bin/sh
echo "$"
echo "$"
echo "$"


-bash-4.2$./test1.sh a b C
./test1.sh
A
B
-bash-4.2$

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Show all command line arguments

-bash-4.2$ Cat test1.sh
#!/bin/sh
Until [-Z "$"]
Do
echo "$"
Shift
Done
-bash-4.2$./test1.sh a b c d E F
A
B
C
D
E
F

-bash-4.2$ Cat test1.sh
#!/bin/sh
Index=1
For Myarg in $*
Do
echo "no# $index = $myarg"
Let "Index+=1"
Done
-bash-4.2$./test1.sh a b c d E F
No#1=a
No#2=b
No#3=c
No#4=d
No#5=e
No#6=f
-bash-4.2$

The road to mathematics-the basic technology of Distributed Computing-linux/unix (5)