Linux: Explain the function
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Using the following script:
#!/bin/bash
#This is a shell script
echo $#
echo $0
echo $1
echo $2
echo $3
echo $*
name1=$1
#name2=$2
echo $name1 "is the first parameter"
echo $name2 "is the second parameter"
echo $
echo $0 "was executed with" $# "parameters on the command line."
Explain the function of each line in the script, assuming that it is executed as follows:
knoppix[knoppix]$ myscript joe mary bob
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Solution Summary
The expert uses the Linus operator to explain the function.
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knoppix[knoppix]$ myscript joe mary bob
echo $#
3
This line is to print out the number of arguments. We have 3 of them, joe, mary, bob
echo $0
myscript
This line is to print our the name of the script. So it is myscript.
echo $1
joe
This line is to print out the first argument. So it is joe.
echo $2 ...
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