o-p

• od - dump files in various formats
• paste - merge corresponding or subsequent lines of files
• patch - apply changes to files
• pathchk - check pathnames
• pax - portable archive interchange
• pdbl - set up and manage user-specific program cache
• ping - send echo requests to network hosts
• pkginfo - show information on software packages in POSIX
• posdbl - set up and manage global program cache
• pr - prepare files for printing
• print - write arguments to standard output
• printf - formatted output
• ps - report process status
• pwd - return working directory name