if so, what is the meaning of : in parallel-k echo: A B C > abc_file ? What"s the effect?
if so, what is the meaning of : in parallel-k echo: A B C > abc_file ? What"s the effect?
this is the deterministic usage / notation of parallel. : is preceded by commands and followed by parameters (used instead of stdin)
to cite examples on gun.org, which are equivalent:
(echo file1; echo file2) | parallel gzip
parallel gzip ::: file1 file2
parallel gzip {} ::: file1 file2
parallel --arg-sep ,, gzip {} ,, file1 file2
parallel --arg-sep ,, gzip ,, file1 file2
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