I want to echo a string that might contain the same parameters as echo. How can I do it without modifying the string?
For
Quote it:
$ var="-e something"
$ echo "$var"
-e something
If what you want is to get echo -e's behaviour (enable interpretation of backslash escapes), then you have to leave the $var reference without quotes:
$ var="hi\nho"
$ echo $var
hi
ho
Or use eval:
$ var="hi\nho"
$ eval echo \${var}
hi\nho
$ var="-e hi\nho"
$ eval echo \${var}
hi
ho