for_file(TCLX)

for_file -- implement loop over contents of a file

Syntax

for_file var filename { code }

This procedure implements a loop over the contents of a file. For each line in filename, it sets var to the line and executes code.

The break and continue commands work as with foreach.

The command

for_file line /etc/passwd {echo $line}

would echo all the lines in the password file.