Connecting Commands (cont)
Many commands accept list of input files:
E.g. cat file1 file2 file3
These commands also typically adopt the conventions:
- read contents of
stdin if no filename arguments
- treat the filename
- as meaning stdin
E.g. cat -n < file and cat a - b - c
If a command does not allow this, use:
E.g. cat file1 file2 file3 | Command
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