2 >= 10

error: `((` are not allowed after `if`

2 < 10

error: we need spaces around `(( `

2 >= 10

2 < 10

There will be an error

We can only use ">>" for redirecting the output

With “>” we will overwrite everything and with “>>” we will append the

information to the end of the current content

">" redirects the standard output while ">>" redirects the error output

We can only use ">" for redirecting output

With

“>” we will update the file and with “>>” we overwrite the information

unset -f fun1

declare -f fun1

remove -f fun1

FAIL

OK

Error message

FAIL

OK

Error message

2 >= 10

error: `((` are not allowed after `if`

2 < 10

error: we need spaces around `(( `