<toc> === Version warning Some of these techniques will require non-ancient versions of awk. === How can awk test for the existence of a file? <include "FileExistence"> [[http://awk.freeshell.org/?action=edit;id=FileExistence| Edit this answer]] === How can I get awk to read multiple files? <include "ReadMultipleFiles"> [[http://awk.freeshell.org/?action=edit;id=ReadMultipleFiles| Edit this answer]] === How can I tell from which file my input is coming? <include "FileName"> [[http://awk.freeshell.org/?action=edit;id=FileName| Edit this answer]] === How can I get awk to open multiple files (selected at runtime)? <include "OpeningFiles"> [[http://awk.freeshell.org/?action=edit;id=OpeningFiles| Edit this answer]] === How can I treat the first file specially? <include "FirstFile"> [[http://awk.freeshell.org/?action=edit;id=FirstFile| Edit this answer]] === How can I explicitly pass in a filename to treat specially? <include "SpecialFile"> [[http://awk.freeshell.org/?action=edit;id=SpecialFile| Edit this answer]]
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