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AIX Version 4.3 System User's Guide: Operating System and Devices

Field Splitting

After performing command substitution, the Korn shell scans the results of substitutions for those field separator characters found in the IFS (Internal Field Separator) variable. Where such characters are found, the shell splits the substitutions into distinct arguments. The shell retains explicit null arguments ("" or '') and removes implicit null arguments (those resulting from parameters that have no values).


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