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echo prints the rest of the line to the screen (standard output).
- This is useful for providing output or updates in a script.
- Wildmasks (for filenames) and variables (values) are
substituted in the argument before echo prints them.
- Examples:
$ echo Hello All!
Hello All!
$ echo sub*t1*
sub1_t1.nii.gz sub2_t1.nii.gz
$ echo j*k
j*k
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