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split(n)		     Tcl Built-In Commands		      split(n)


       split - Split a string into a proper Tcl list

       split string ?splitChars?

       Returns a list created by splitting string at each character that is in
       the splitChars argument.	 Each element of the result list will  consist
       of the characters from string that lie between instances of the characā€
       ters in splitChars.  Empty list elements will be	 generated  if	string
       contains	 adjacent  characters  in  splitChars, or if the first or last
       character of string is in splitChars.  If splitChars is an empty string
       then  each character of string becomes a separate element of the result
       list.  SplitChars defaults to the standard white-space characters.

       Divide up a USENET group name into its hierarchical components:
	      split "comp.lang.tcl.announce" .
		   => comp lang tcl announce

       See how the split command splits	 on  every  character  in  splitChars,
       which can result in information loss if you are not careful:
	      split "alpha beta gamma" "temp"
		   => al {ha b} {} {a ga} {} a

       Extract the list words from a string that is not a well-formed list:
	      split "Example with {unbalanced brace character"
		   => Example with \{unbalanced brace character

       Split a string into its constituent characters
	      split "Hello world" {}
		   => H e l l o { } w o r l d

       Parse  a	 Unix  /etc/passwd file, which consists of one entry per line,
       with each line consisting of a colon-separated list of fields:
	      ## Read the file
	      set fid [open /etc/passwd]
	      set content [read $fid]
	      close $fid

	      ## Split into records on newlines
	      set records [split $content "\n"]

	      ## Iterate over the records
	      foreach rec $records {

		 ## Split into fields on colons
		 set fields [split $rec ":"]

		 ## Assign fields to variables and print some out...
		 lassign $fields \
		       userName password uid grp longName homeDir shell
		 puts "$longName uses [file tail $shell] for a login shell"

       join(n), list(n), string(n)

       list, split, string

Tcl								      split(n)
                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
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