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7.2

how to write string comparison in shell script

Asked by xewoox in Bourne Shell (sh), Unix Operating Systems, Shell Scripting

Hi, I am writing a shell script which will input a string parameter. Inside the script I will do different action depending on the string value. I wrote

myscript:

if [ $1 == "test1" ]
then
  echo A
else
  echo B
fi

myscript  test1
A

myscript junk
B

So, this is all good

now if I change my script to

if [ $1 == "no" ]
then
  echo A
else
  echo B
fi

myscript  'asdfasdf'
B
myscript '-plll -o lll'
A

Why A?

I enter most garbage parameter to myscript it will echo B but for a few it will return A. Why?

What do I need to do to fix this? Thanks!
[+][-]11/06/08 08:04 PM, ID: 22901891Accepted Solution

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About this solution

Zones: Bourne Shell (sh), Unix Operating Systems, Shell Scripting
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Solution Provided By: SmartIntel
Participating Experts: 3
Solution Grade: B
 
[+][-]11/06/08 08:30 PM, ID: 22901956Assisted Solution

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[+][-]11/06/08 08:38 PM, ID: 22901981Assisted Solution

Assisted solutions are selected by the member who asked the question as a comment that contributed to their question's solution.

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