BASH Script Conditional Statements with Bang (!) in String

I am iterating through records using a bash script and I need to test if the record (a string) is a value that contains a bang (!).

For instance, my records (file) contains:



I then need a conditional statement that checks the string for bangs such as:

if [ "$string" == "A!" ]; then
   #do this

However, I cannot seem to get a successful test of the strings containing a bang.  I have tried:

if [ "$string" == "A!" ]; then

if [ "$string" == "A\!" ]; then

I have even tried escaping the escape:
if [ "$string" == "A\\\!" ]; then

...what am I missing?

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mfussellAuthor Commented:
I figured it out...

I needed to use single quotes instead of double quotes:


if [ "$string" == 'A!' ]; then just fine.

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Shell Scripting

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