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Full Discussion: How ls | wc -l works?
Top Forums UNIX for Dummies Questions & Answers How ls | wc -l works? Post 302184330 by krishmaths on Friday 11th of April 2008 07:39:33 AM
Old 04-11-2008
How ls | wc -l works?

ls displays files in tabbed output. Say a directory contains 3 files. ls will list all 3 in one line. So, I expect ls | wc -l to give 1, but it counts the nr of files and gives 3.

Can someone explain how this works?
 

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XZLESS(1)							     XZ Utils								 XZLESS(1)

NAME
xzless, lzless - view xz or lzma compressed (text) files SYNOPSIS
xzless [file...] lzless [file...] DESCRIPTION
xzless is a filter that displays text from compressed files to a terminal. It works on files compressed with xz(1) or lzma(1). If no files are given, xzless reads from standard input. xzless uses less(1) to present its output. Unlike xzmore, its choice of pager cannot be altered by setting an environment variable. Com- mands are based on both more(1) and vi(1) and allow back and forth movement and searching. See the less(1) manual for more information. The command named lzless is provided for backward compatibility with LZMA Utils. ENVIRONMENT
LESSMETACHARS A list of characters special to the shell. Set by xzless unless it is already set in the environment. LESSOPEN Set to a command line to invoke the xz(1) decompressor for preprocessing the input files to less(1). SEE ALSO
less(1), xz(1), xzmore(1), zless(1) Tukaani 2010-09-27 XZLESS(1)
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