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Run commands in parallel, collecting output and presenting it when command execution completes.

Determine if and where programs reside in the current PATH environment variable.

Prints arguments on standard output, columnized (like `ls') but not sorted, preceded with a number.

If STDIN is a network socket, print the hostname or IP address of the peer on STDOUT

Create one PATH-style variable from another

Library of C functions for pre-processing files with the SWPP pre-processor.

Library of C functions for evaluating expressions involving strings and numbers.

Library of C functions for manipulating words and lists of words in a manner compatible with many Bourne-style UNIX shells.