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Full Discussion: Help with tee command
Top Forums Shell Programming and Scripting Help with tee command Post 302778713 by kumarjt on Monday 11th of March 2013 11:50:48 AM
Old 03-11-2013
Help with tee command

In the current directory , I have seven files .
But when I use the following command , it lists eight files ( 7 files + file_list.xtx)
Code:
 
ls -1 | tee file_list.xtx | while read line; do echo $line  ; done

Does the tee command create the file_list.xtx file first and then executes the ls -1 command ?
My understanding was:
1. First the ls -1 command will get executed listing the 7 files
2. Entries of all th seven files will be written in a new file created by the tee command (file_list.xtx)
3. The output of ls -1 command ( entries of 7 files only ) will ve passed to the while loop for further processing


Is my concept wrong ?

Thanks
Kumarjit.
 

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DLB(6)								   Games Manual 							    DLB(6)

NAME
dlb - NetHack data librarian SYNOPSIS
dlb { xct } [ vfIC ] arguments... [ files... ] DESCRIPTION
Dlb is a file archiving tool in the spirit (and tradition) of tar for NetHack version 3.1 and higher. It is used to maintain the archive files from which NetHack reads special level files and other read-only information. Note that like tar the command and option specifiers are specified as a continuous string and are followed by any arguments required in the same order as the option specifiers. This facility is optional and may be excluded during NetHack configuration. COMMANDS
The x command causes dlb to extract the contents of the archive into the current directory. The c command causes dlb to create a new archive from files in the current directory. The t command lists the files in the archive. OPTIONS AND ARGUMENTS
v verbose output f archive specify the archive. Default if f not specified is LIBFILE (usually the nhdat file in the playground). I lfile specify the file containing the list of files to put in to or extract from the archive if no files are listed on the command line. Default for archive creation if no files are listed is LIBLISTFILE. C dir change directory. Changes directory before trying to read any files (including the archive and the lfile). EXAMPLES
Create the default archive from the default file list: dlb c List the contents of the archive 'foo': dlb tf foo AUTHOR
Kenneth Lorber SEE ALSO
nethack(6), tar(1) BUGS
Not a good tar emulation; - does not mean stdin or stdout. Should include an optional compression facility. Not all read-only files for NetHack can be read out of an archive; examining the source is the only way to know which files can be. 4th Berkeley Distribution 28 Oct 1993 DLB(6)
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