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as suggest in frans coment : '/^#[^!].*/d' -> remove if line begin with # except shebang #!/bin/bash 's/\(.*[^!]\)#.*[^}]/\1/' -> remove inline comments except shebang and ${variable#}
0sed -i -e '/^#[^!].*/d' -e 's/\(.*[^!]\)#.*[^}]/\1/' <filename>
What do you think?
Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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sed -e 's/^#!/__SHEBANG__/' -e '/^#/d' -e 's/#.*$//' -e 's/^__SHEBANG__/#!/'The shebang is first shebang '#!' replaced by __SHEBANG__ so the line won't be removed then comments are removed and at last __SHEBANG__ is replaced by the real shebang '#!'. I guess there's a another cleaner way to perform it. But it doesn't fix the case showed by frans.