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I want to do the following on a bash script:

I want the user to enter a file name and the bash script must move the file to another file as follows. If the user enters input.tex, I want to move this file to another file named inputmerged.tex.

I have the following bash script named

mv $1 $2

The above however needs to be run as ./myscript input.tex inputmerged.tex The second input is redundant, since the new file, which I move to, is of the same type and always has the word merged appended at the end of the first filename. How should I do it to get rid of the second input in the bash script?


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up vote 0 down vote accepted

Something like:

NEWFILE=`echo ${1} | sed "s/\./merged./"`
mv "${1}" "${NEWFILE}"

This will however fail if there are multiple . characters in the name.

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Thanks Cry Havok. – user27323 May 25 '13 at 18:34
Or just mv "$1" "${1%.tex}merged.tex". – geirha May 26 '13 at 6:58

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