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Full Discussion: Confused over results using "tee" in piped command
Top Forums UNIX for Dummies Questions & Answers Confused over results using "tee" in piped command Post 302596896 by Corona688 on Wednesday 8th of February 2012 02:12:40 PM
Old 02-08-2012
You've used 'tee' without giving it any filenames, which is effectively the same as 'cat'. The one file it writes by default, stdout, you've redirected to a file, leaving nothing left for cut to get.

If you want tee to actually put the output into several files, don't redirect it, just tell which file you want

Code:
... | tee -a filename | ...

The -a is for append.

---------- Post updated at 01:12 PM ---------- Previous update was at 01:10 PM ----------

What I'd actually do, though?

Code:
wc -l < input > output
read NUMBER <output

Much more efficient, using nearly pure builtins except wc.
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LEARN ABOUT REDHAT

split

SPLIT(1)								FSF								  SPLIT(1)

NAME

       split - split a file into pieces

SYNOPSIS

       split [OPTION] [INPUT [PREFIX]]

DESCRIPTION

       Output  fixed-size  pieces  of  INPUT  to PREFIXaa, PREFIXab, ...; default PREFIX is `x'.  With no INPUT, or when INPUT is -, read standard
       input.

       Mandatory arguments to long options are mandatory for short options too.

       -a, --suffix-length=N
	      use suffixes of length N (default 2)

       -b, --bytes=SIZE
	      put SIZE bytes per output file

       -C, --line-bytes=SIZE
	      put at most SIZE bytes of lines per output file

       -l, --lines=NUMBER
	      put NUMBER lines per output file

       --verbose
	      print a diagnostic to standard error just before each output file is opened

       --help display this help and exit

       --version
	      output version information and exit

       SIZE may have a multiplier suffix: b for 512, k for 1K, m for 1 Meg.

AUTHOR

       Written by Torbjorn Granlund and Richard M. Stallman.

REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

       Copyright (C) 2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The  full  documentation  for split is maintained as a Texinfo manual.  If the info and split programs are properly installed at your site,
       the command

	      info split

       should give you access to the complete manual.

split (coreutils) 4.5.3 					   February 2003							  SPLIT(1)
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