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- The (text) result of any command can be captured using backquotes:
`
- This is very useful for setting variables.
- Examples:
$ v=`ls sub[13]*`
$ echo $v
sub1_t1.nii.gz sub1_t2.nii.gz sub3_pd.nii.gz
$ echo `fslval sub1_t1 pixdim2`
4.0
- NB: the result is always treated as a single string, even if it contains spaces
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