fileutil package in use

File and Directory Handling example from a Well House Consultants training course
More on File and Directory Handling [link]

This example is described in the following article(s):
• The fileutil package and a list of file system commands in Tcl - [link]

Source code: files Module: T209

package require fileutil

# The Standardly distributed fileutil package provides an interface from Tcl
# to Unix / Linux like file system resources.

# Find out about a file
set about [fileutil::fileType requests.xyz]
puts $about

# Read a whole file and split it into a list of lines
set content [split [fileutil::cat requests.xyz] "\n"]
foreach line $content {
        set record [split $content " "]
        set name [lindex $line 0]
        puts "Let me tell you about $name"
        foreach skill [lrange $line 1 end] {
                puts ".... (s)he knows $skill"
        }
}

# Searching for something ..
# a) recursive listing of my home directory!
set relations [fileutil::find $env(HOME)]
# Following "puts" commented out for demo run - too much output for a web page!
puts $relations

# b) all .txt files under my parent
set relations [fileutil::findByPattern .. -regexp {\.txt$}]
puts $relations

# c) all files over 2 Mbyte in size in my public data directory
proc is_big name {
        return [expr [file size $name] > 2000000]
        }
set huge [fileutil::find /Library/WebServer/live_html/data is_big]
puts [join $huge \n]

# Sample output:
#
# wizard:tcl85 graham$ tclsh files
# text
# Let me tell you about antonia
# .... (s)he knows Perl
# .... (s)he knows XML
# .... (s)he knows PHP
# .... (s)he knows Tcl/Tk
# .... (s)he knows MySQL
# Let me tell you about barbara
# .... (s)he knows Tcl/Tk
# .... (s)he knows ASP
# .... (s)he knows Ruby
# .... (s)he knows Java
# Let me tell you about cherry
# .... (s)he knows Perl
# .... (s)he knows Java
# .... (s)he knows Ruby
# .... (s)he knows MySQL
# Let me tell you about delia
# .... (s)he knows XML
# .... (s)he knows PHP
# .... (s)he knows Java
# .... (s)he knows ASP
[etc]
# Let me tell you about tommy
# .... (s)he knows Perl
# .... (s)he knows Java
# .... (s)he knows XML
# Let me tell you about ulsyees
# .... (s)he knows Java
# .... (s)he knows PHP
# .... (s)he knows Perl
# Let me tell you about victor
# .... (s)he knows Ruby
# .... (s)he knows Perl
# .... (s)he knows Tcl/Tk
# .... (s)he knows MySQL
# Let me tell you about william
# .... (s)he knows Ruby
# .... (s)he knows Perl
# .... (s)he knows PHP
# Let me tell you about xavier
# .... (s)he knows PHP
# .... (s)he knows Java
# .... (s)he knows Perl
# Let me tell you about yuri
# .... (s)he knows XML
# .... (s)he knows PHP
# .... (s)he knows Perl
# .... (s)he knows Tcl/Tk
# Let me tell you about zachary
# .... (s)he knows MySQL
# .... (s)he knows Java
# .... (s)he knows Tcl/Tk
# Let me tell you about
# ../apols.txt ../tcl85/demo.txt
# /Library/WebServer/live_html/data/ac_20100322.xyz
# /Library/WebServer/live_html/data/ac_20100608.xyz
# /Library/WebServer/live_html/data/acc.xyz
# wizard:tcl85 graham$

Learn about this subject

This module and example are covered on the following public courses:
* Learning to program in Tcl
* Tcl Programming
* Tcl Programming
Also available on on site courses for larger groups

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Other Examples

This example comes from our "File and Directory Handling" training module. You'll find a description of the topic and some other closely related examples on the "File and Directory Handling" module index page.

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