Most experienced Windows users use file manager different from built in Explorer. Today I've found a plugin that brings Windows Explorer closer to those advanced file managers.

FolderSize plugin adds a new column in Explorers table view. This column shows amount of space on disk occupied by file or folder, its subfolders and files.

I give my thanks to free4you-yohunza for giving me a tip.

Half year nightmare has finally ended yesterday.

Long time ago a SEGV (segmentation violation, memory handling error) appeared in my C++ program that I write as a hobby. As program used many external libraries (libxml2, bzip2, sqlite and others) quest for source of this error has taken half a year cost of my free time and my youth away.

Last week I've completed writing of test suite for some components of project in question. Tests were failing as often as main project binary, but splitting them into more specific ones has finally revealed the source of error. Boost::iostreams::bzip2_decompressor was the culprit! I've posted a description of the error on boost tracking system.

Write unit tests! Be happy!

• find - finds files
• /var/log - a path to search in
• -mmin -10 - found files should be modified less than 10 minutes ago
• xargs - convert stdin into arguments of the given command
• less - view files
• first + - execute an internal less command
• second + - execute the given command on each file
• G - an internal less command "jump to the end"

#include <stdexcept>
#include <cxxabi.h>
#include <string>

// Please, don't use this code for commercial purpose.

template <class T>
std::string typeOf(T& object) throw(std::logic_error, std::bad_alloc) {
	using namespace std;
	int status;
	string rawTypeName=typeid(object).name();
	char *name = abi::__cxa_demangle(rawTypeName.c_str(), 0, 0, &status);
	string retvalue;
	if (name!=NULL) {
		retvalue=name;
		free(name);
	}
	switch (status) {
	case 0: //Succeed
		return retvalue;
	case -1: //Memory allocation error
		throw bad_alloc();
	case -2: //Invalid name
		return rawTypeName;
	case -3: //Invalid argument
		throw invalid_argument(string("Invalid argument while demangling ")+rawTypeName);
	default:
		throw logic_error(string("Unknown error while demangling ")+rawTypeName);
	}
}

#!/bin/bash
# A logging library
# Supports a test for the same message (see put_changed_report)


# Appends to a variable which name given in first argument all other arguments.
# Arguments: message_var a string to append 
function append () {
	local name=$1 val
	eval val=\$$name
	shift
	if [[ "$val" == "" ]]; then 
		eval $name=\"'$@'\"
	else 
		eval $name=\"'$val' '$@'\"
	fi
}

# Prints a complete report line
# Format: date time \t message \r\n
# Special EOL escaping is needed for the log to be correctly viewed by Microsoft programs.
# Arguments: message 
function make_report () {
	echo -en `date --rfc-3339=seconds`\\t$@ \\r\\n
}

# Removes Microsoft EOL escaping
function unescape () {
	echo "$@" | awk '{gsub(/[\n\r]/, ""); gsub(/ *$/, ""); print $0;}'
}

# For each line of log from input prints message without time and eols
# A reverse of make_report
function parse_report () {
	local date_time message IFS
	IFS=`echo -en \\\t`
	while read date_time message ; do
		echo `unescape $message`
	done
}

# Prints last logged message 
# Arguments: log_file
function last_message() {
	local log_file=$1
	tail -n 1 "$log_file" | parse_report
}

# Adds a report to a file
# Doesn't add a report if a previous one has the same message.
#Arguments: log_file message
function put_changed_report() {
	local logfile=$1
	shift
	local current="$@"
	if [[ -z "$current" ]] ; then
		return
	fi
	local prev=`last_message "$logfile"`
	if [[ "$prev" != "$current" ]] ; then 
		make_report $current >> "$logfile" 
	fi
}