unix - How to use cut command to shorten a file name, and use it inside a bash script? -


i use text of variable, fileroot, input command. however, fileroot based upon name of file in same directory.

so far, have 

for file in *on.nii;      fileroot="cut -c 1-78 ${file}" done

i getting unrecognised option -c command. ideas on how limit {file} 78 characters?

simply address string, instead of using cut:

for file in *on.nii;      fileroot="${file:0:78}" done

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