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You still have not indicated what is in file.ini, or at least what the first line might actually be.
Currently the code looks pointless without anymore information. Maybe you could actually advise what it is you are trying to achieve?
the problem is the quote evaluation, in the second case there is one more level of quotes (backtick) which will modify how the "program" will be seen during execution.
`...` is the legacy syntax required by only the very oldest of non-POSIX-compatible bourne-shells. There are several reasons to always prefer the $(...) syntax:
Important differences
Backslashes (\) inside backticks are handled in a non-obvious manner:
Code:
$ echo "`echo \\a`" "$(echo \\a)"
a \a
$ echo "`echo \\\\a`" "$(echo \\\\a)"
\a \\a
# Note that this is true for *single quotes* too!
$ foo=`echo '\\'`; bar=$(echo '\\'); echo "foo is $foo, bar is $bar"
foo is \, bar is \\
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