10-01-2008
Rename file based on first 3 characters of data in file
I'm looking to determine if I can use a grep command to read file and rename the file based on the first 3 characters of the data in the file.
An example is:
Read FileA
If the first 3 positions of the data in the file are "ITP", then rename the file as FileA_ITP, else if the first 3 positions are "UNB" then rename the file FileA_UNB.
I believe I might be able to use the GREP command to identify the data but not sure how to rename the file being processed.
Appreciate any feedback.
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LEARN ABOUT DEBIAN
rename
rename(3tcl) Tcl Built-In Commands rename(3tcl)
__________________________________________________________________________________________________________________________________________________
NAME
rename - Rename or delete a command
SYNOPSIS
rename oldName newName
_________________________________________________________________
DESCRIPTION
Rename the command that used to be called oldName so that it is now called newName. If newName is an empty string then oldName is deleted.
oldName and newName may include namespace qualifiers (names of containing namespaces). If a command is renamed into a different namespace,
future invocations of it will execute in the new namespace. The rename command returns an empty string as result.
EXAMPLE
The rename command can be used to wrap the standard Tcl commands with your own monitoring machinery. For example, you might wish to count
how often the source command is called:
rename ::source ::theRealSource
set sourceCount 0
proc ::source args {
global sourceCount
puts "called source for the [incr sourceCount]'th time"
uplevel 1 ::theRealSource $args
}
SEE ALSO
namespace(3tcl), proc(3tcl)
KEYWORDS
command, delete, namespace, rename
Tcl rename(3tcl)