What is the output of the command '^$' in unix? - **SOLVED**

[Top-Dawg]

What is the output of the command '^$' in unix?

I came across this command in one the the shell scripts (based on sun solaris) I am not able to understand what is does and what its output is...

[Dee369]

What is the output of the command '^$' in unix?

I came across this command in one the the shell scripts (based on sun solaris) I am not able to understand what is does and what its output is...

Substitutes a string on the previous command line and executes the new line.
For instance:
$ cd cx328
-bash: cd: cx328: No such file or directory
$ ^8^9
~/cx329$

The number 8 was replaced with the number 9 and the command "cd cx328" was replaced with "cd cx329" and re-executed.

It will probably make more sense this way.
(The lines starting with $ are the commands I'm issuing, everything else is output)

$ echo treehouse
treehouse
$ ^tree^boat
echo boathouse
boathouse

Hope that helps you. :)

[Top-Dawg]

Again, I thank you. :) Dawg

[Dee369]

You're welcome :)

[allheart55]

Tech Problem ***SOLVED***

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