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		<title>please..please..</title>
		<link>http://rusiawan.wordpress.com/2012/01/15/please-please/</link>
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		<pubDate>Sun, 15 Jan 2012 06:04:16 +0000</pubDate>
		<dc:creator>rusiawan</dc:creator>
				<category><![CDATA[Ga penting]]></category>
		<category><![CDATA[Sehari-hari]]></category>

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		<description><![CDATA[Good time for a change &#8230; The Smiths.. sorry.. from now on I prefer this one..<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=rusiawan.wordpress.com&amp;blog=510152&amp;post=808&amp;subd=rusiawan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<span style="text-align:center; display: block;"><a href="http://rusiawan.wordpress.com/2012/01/15/please-please/"><img src="http://img.youtube.com/vi/8j4hg9VrYX4/2.jpg" alt="" /></a></span>
<p><span style="color:#000000;">Good time for a change &#8230;</span></p>
<p><span style="color:#000000;">The Smiths.. sorry.. from now on I prefer this one..</span></p>
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		<title>Diff/compare router configs</title>
		<link>http://rusiawan.wordpress.com/2012/01/01/diffcompare-router-configs/</link>
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		<pubDate>Sun, 01 Jan 2012 09:11:58 +0000</pubDate>
		<dc:creator>rusiawan</dc:creator>
				<category><![CDATA[Komputer dan Internet]]></category>
		<category><![CDATA[cisco]]></category>
		<category><![CDATA[configuration]]></category>
		<category><![CDATA[diff]]></category>
		<category><![CDATA[shell script]]></category>
		<category><![CDATA[solaris]]></category>

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		<description><![CDATA[Comparing or making diff of NE (Network Element) configurations is one of useful thing in Operation (configuration) management. There are many tools/application which facilitate that function.  One of popular FOSS app is RANCID.  Some new routers even have  been already featuring embedded  configuration diff (e.g Cisco IOS XR). Sometime it is possible that RANCID is [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=rusiawan.wordpress.com&amp;blog=510152&amp;post=797&amp;subd=rusiawan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><span style="color:#000000;">Comparing or making diff of NE (Network Element) configurations is one of useful thing in Operation (configuration) management. There are many tools/application which facilitate that function.  One of popular FOSS app is RANCID.  Some new routers even have  been already featuring embedded  configuration diff (e.g Cisco IOS XR).</span></p>
<p><span style="color:#000000;">Sometime it is possible that RANCID is not available and its installation might not be an option (e.g because of strict server install/policy ).  In that case, we have to write custom script to do that.</span></p>
<p><span style="color:#000000;">The use of GNU diff is obvious.  But if we are dealing with Solaris environment we need to be a little bit creative since Solaris diff is somewhat basic and does not offer as many feature as GNU diff.</span></p>
<p><span style="color:#000000;">Below is my script to achieve that function.  The script is also capable of filtering router configuration from raw capture (in the case of the admin should capture additional information within the same output, i.e device health, and do not want to poll/capture separately due to efficiency consideration), and also excluding specific pattern from diff. </span></p>
<p><span style="color:#000000;">Note: it&#8217;s tested on Solaris 5.10, Bourne Shell (sh), dealing with Cisco configurations, additional capture in the raw results is  &#8221;admin show platform&#8221; (IOS XR).</span></p>
<p><span style="color:#000000;">Enjoy!, adjust accordingly in case you want to use it in your environment.</span></p>
<p><span style="color:#000000;"><code>#!/usr/bin/sh<br />
#################################<br />
##Andi Rusiawan (c)2011 ##<br />
##arusiawa@cisco.com ##<br />
##This script is provided as-is##<br />
#################################</code></span></p>
<p><span style="color:#000000;">##date on solaris is very poor, calc manually##</span><br />
<span style="color:#000000;"> #d=`date +%d`</span><br />
<span style="color:#000000;"> #dmin1=`expr $d &#8211; 1`</span><br />
<span style="color:#000000;"> #dmin2=`expr $d &#8211; 2`</span></p>
<p><span style="color:#000000;">##use TZ tricks for more valid date</span><br />
<span style="color:#000000;"> TZ=&#8221;WIB+17&#8243;</span><br />
<span style="color:#000000;"> export TZ</span><br />
<span style="color:#000000;"> yestd=`date +%Y-%m-%d`</span><br />
<span style="color:#000000;"> unset TZ</span><br />
<span style="color:#000000;"> TZ=&#8221;WIB+41&#8243;</span><br />
<span style="color:#000000;"> export TZ</span><br />
<span style="color:#000000;"> yestd1=`date +%Y-%m-%d`</span><br />
<span style="color:#000000;"> unset TZ</span><br />
<span style="color:#000000;"> TZ=&#8221;WIB-7&#8243;</span><br />
<span style="color:#000000;"> export TZ</span><br />
<span style="color:#000000;"> today=`date +%Y-%m-%d`</span></p>
<p><span style="color:#000000;">##place to define which configs to diff</span><br />
<span style="color:#000000;"> #old=$yestd1</span><br />
<span style="color:#000000;"> #new=$yestd</span><br />
<span style="color:#000000;"> old=$yestd</span><br />
<span style="color:#000000;"> new=$today</span></p>
<p><span style="color:#000000;">##let&#8217;s extract router config from raw capture available in /root/tools/config_backup/output</span></p>
<p><span style="color:#000000;">rawdir=/root/tools/config_backup/output</span><br />
<span style="color:#000000;"> confdir=/root/tools/config_diff/configs</span><br />
<span style="color:#000000;"> exclude=/root/tools/config_diff/exclude.list</span><br />
<span style="color:#000000;"> logfile=/root/tools/config_diff/confdiff.log</span></p>
<p><span style="color:#000000;">if [ ! -d $confdir/$old ]; then</span><br />
<span style="color:#000000;"> mkdir -p $confdir/$old</span><br />
<span style="color:#000000;"> fi</span></p>
<p><span style="color:#000000;">if [ ! -d $confdir/$new ]; then</span><br />
<span style="color:#000000;"> mkdir -p $confdir/$new</span><br />
<span style="color:#000000;"> fi</span></p>
<p><span style="color:#000000;">##empty logfile</span><br />
<span style="color:#000000;"> echo &#8220;&#8221; &gt; $logfile</span></p>
<p><span style="color:#000000;">##in this case config file characterized by its existence beetween string &#8220;Building configuration&#8221; and &#8220;platform&#8221;</span></p>
<p><span style="color:#000000;">cd $rawdir/$old</span><br />
<span style="color:#000000;"> for h in *.txt ; do</span><br />
<span style="color:#000000;"> verify1=`awk &#8216;/^end\r$/&#8217; $h | wc -l`</span><br />
<span style="color:#000000;"> if [ $verify1 -gt 0 ]; then</span><br />
<span style="color:#000000;"> cat $h | awk &#8216;/Building configuration/,/platform/&#8217; | grep -v &#8220;Building configuration&#8221; | grep -v platform | /usr/xpg4/bin/grep -Fv -f $exclude &gt; $confdir/$old/$h.config | sh</span><br />
<span style="color:#000000;"> echo &#8220;extract configs from $rawdir/$old/$h to $confdir/$old/$h.config&#8221; &gt;&gt; $logfile</span><br />
<span style="color:#000000;"> fi</span><br />
<span style="color:#000000;"> done</span></p>
<p><span style="color:#000000;">cd $rawdir/$new</span><br />
<span style="color:#000000;"> for i in *.txt ; do</span><br />
<span style="color:#000000;"> verify2=`awk &#8216;/^end\r$/&#8217; $i | wc -l`</span><br />
<span style="color:#000000;"> if [ $verify2 -gt 0 ]; then</span><br />
<span style="color:#000000;"> cat $i | awk &#8216;/Building configuration/,/platform/&#8217; | grep -v &#8220;Building configuration&#8221; | grep -v platform | /usr/xpg4/bin/grep -Fv -f $exclude &gt; $confdir/$new/$i.config | sh</span><br />
<span style="color:#000000;"> echo &#8220;extract configs from $rawdir/$new/$i to $confdir/$new/$i.config&#8221; &gt;&gt; $logfile</span><br />
<span style="color:#000000;"> fi</span><br />
<span style="color:#000000;"> done</span></p>
<p><span style="color:#000000;">trgtdir=/root/tools/config_diff/output</span><br />
<span style="color:#000000;"> output=config_diff_$new.txt</span><br />
<span style="color:#000000;"> dir1=$confdir/$old</span><br />
<span style="color:#000000;"> dir2=$confdir/$new</span><br />
<span style="color:#000000;"> if [ ! -d $trgtdir ]; then</span><br />
<span style="color:#000000;"> mkdir -p $trgtdir</span><br />
<span style="color:#000000;"> fi</span></p>
<p><span style="color:#000000;">##check missing configs</span></p>
<p><span style="color:#000000;">Nmiss=`find $confdir/$new -type f -size 0 | wc -l`</span></p>
<p><span style="color:#000000;">echo &#8220;</span><br />
<span style="color:#000000;"> Missing configs:</span><br />
<span style="color:#000000;"> There are possibly $Nmiss missing configs file &#8221; &gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> echo &#8220;Please check on log files, there are possibly $Nmiss missing configs file &#8221; &gt;&gt; $logfile</span><br />
<span style="color:#000000;"> find $confdir/$new -type f -size 0 | awk -F/ &#8216;{print $6,$7}&#8217; &gt;&gt; $logfile</span><br />
<span style="color:#000000;"> find $confdir/$new -type f -size 0 | awk -F/ &#8216;{print $6,$7}&#8217; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> echo &#8220;========================================================================================================&#8221; &gt;&gt; $logfile</span><br />
<span style="color:#000000;"> ##check incomplete configs</span></p>
<p><span style="color:#000000;">echo &#8220;</span><br />
<span style="color:#000000;"> Incomplete configs:</span><br />
<span style="color:#000000;"> Diff might be invalid on these devices due to incomplete config &#8221; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> cd $rawdir/$old</span><br />
<span style="color:#000000;"> for x in *.txt; do</span><br />
<span style="color:#000000;"> incomp=`awk &#8216;/^end\r$/&#8217; $x | wc -l`</span><br />
<span style="color:#000000;"> if [ $incomp -eq 0 ]; then</span><br />
<span style="color:#000000;"> echo &#8220;$old $x&#8221; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> fi</span><br />
<span style="color:#000000;"> done</span></p>
<p><span style="color:#000000;">cd $rawdir/$new</span><br />
<span style="color:#000000;"> for y in *.txt; do</span><br />
<span style="color:#000000;"> incomp=`awk &#8216;/^end\r$/&#8217; $y | wc -l`</span><br />
<span style="color:#000000;"> if [ $incomp -eq 0 ]; then</span><br />
<span style="color:#000000;"> echo &#8220;$new $y&#8221; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> fi</span><br />
<span style="color:#000000;"> done</span><br />
<span style="color:#000000;"> echo &#8220;configs extraction are done, starting to diff &#8230;&#8230;&#8230;&#8230;&#8230;&#8221; &gt;&gt; $logfile</span></p>
<p><span style="color:#000000;">##write list of hostname which config is changed</span><br />
<span style="color:#000000;"> diffN=`dircmp -w120 -s $dir1 $dir2 | grep -v &#8216;^$&#8217; | awk -F. &#8216;{print $2}&#8217; | sed &#8216;s=/==g&#8217; | grep -v &#8216;^$&#8217; | wc -l`</span><br />
<span style="color:#000000;"> echo &#8220;</span><br />
<span style="color:#000000;"> Diff results:</span><br />
<span style="color:#000000;"> There are $diffN routers which backup configs changed&#8221; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> echo &#8220;========================================================================================================&#8221; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> dircmp -w120 -s $dir1 $dir2 | grep -v &#8216;^$&#8217; | awk -F. &#8216;{print $2}&#8217; | sed &#8216;s=/==g&#8217; | grep -v &#8216;^$&#8217; | awk &#8216;{print NR &#8220;\t&#8221; $0}&#8217; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> echo &#8220;========================================================================================================</span></p>
<p><span style="color:#000000;">&#8221; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> #diff -bitwr -C2 $dir1 $dir2 | grep -v bitwr | sed &#8216;s=/root/tools/==g&#8217; &gt;&gt; $trgtdir/$output</span></p>
<p><span style="color:#000000;">##diff process, no need to diff identical and incomplete file configs</span></p>
<p><span style="color:#000000;">hostnames=`dircmp -w120 -s $dir1 $dir2 | grep -v &#8216;^$&#8217; | awk -F. &#8216;{print $2}&#8217; | sed &#8216;s=/==g&#8217; | grep -v &#8216;^$&#8217;`</span><br />
<span style="color:#000000;"> for j in $hostnames; do</span><br />
<span style="color:#000000;"> if [ -f $dir1/$j.txt.config ] &amp;&amp; [ -f $dir2/$j.txt.config ]; then</span><br />
<span style="color:#000000;"> verify=`awk &#8216;/^end\r$/&#8217; $dir1/$j.txt.config | wc -l`</span><br />
<span style="color:#000000;"> if [ $verify -gt 0 ]; then</span><br />
<span style="color:#000000;"> echo &#8220;</span></p>
<p><span style="color:#000000;">Filtered result (eligible to diffs]:</span></p>
<p><span style="color:#000000;">############################## START CONFIG DIFF: $j ##############################&#8221; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> diff -bitsw -C2 $dir1/$j.txt.config $dir2/$j.txt.config | sed &#8216;s=/root/tools/==g&#8217; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> echo &#8220;Diffing configuration of $j&#8221; &gt;&gt; $logfile</span><br />
<span style="color:#000000;"> echo &#8220;############################## END CONFIG DIFF: $j ##############################</span></p>
<p><span style="color:#000000;">&#8221; &gt;&gt; $trgtdir/$output</span><br />
<span style="color:#000000;"> fi</span><br />
<span style="color:#000000;"> fi</span><br />
<span style="color:#000000;"> done</span></p>
<p><span style="color:#000000;">echo &#8220;Done!, diff info can be found in $trgtdir/$output&#8221; &gt;&gt; $logfile</span></p>
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		<title>intelligence and ebooks collection</title>
		<link>http://rusiawan.wordpress.com/2011/12/11/intelligence-and-ebooks-collection/</link>
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		<pubDate>Sun, 11 Dec 2011 13:13:56 +0000</pubDate>
		<dc:creator>rusiawan</dc:creator>
				<category><![CDATA[Sehari-hari]]></category>

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			<content:encoded><![CDATA[<p style="text-align:center;"><a href="http://rusiawan.files.wordpress.com/2011/12/ebooks.jpg"><img class="aligncenter size-medium wp-image-791" title="intelligence&amp;ebooks" src="http://rusiawan.files.wordpress.com/2011/12/ebooks.jpg?w=300&#038;h=158" alt="" width="300" height="158" /></a></p>
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		<title>Information Overload</title>
		<link>http://rusiawan.wordpress.com/2011/12/11/information-overload/</link>
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		<pubDate>Sun, 11 Dec 2011 12:27:41 +0000</pubDate>
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		<description><![CDATA[Bukan pertama kali ini saya mengutip pendapat dari Alvin Toffler tentang Information Overload. Dalam bahasa Indonesia, Information Overload bisa diartikan sebagai sebuah kondisi dimana seseorang menjadi sulit memahami suatu isu dan atau untuk kemudian mengambil keputusan dikarenakan ketersediaan informasi yang berlebih. Akhir-akhir ini, karena tuntutan pekerjaan, saya harus kembali menyegarkan pengetahuan saya agar mampu melakukan [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=rusiawan.wordpress.com&amp;blog=510152&amp;post=782&amp;subd=rusiawan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
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<p>Bukan pertama kali ini saya mengutip pendapat dari Alvin Toffler tentang Information Overload.</p>
<p>Dalam bahasa Indonesia, Information Overload bisa diartikan sebagai sebuah kondisi dimana seseorang menjadi sulit memahami suatu isu dan atau untuk kemudian mengambil keputusan dikarenakan ketersediaan informasi yang berlebih.</p>
<p>Akhir-akhir ini, karena tuntutan pekerjaan, saya harus kembali menyegarkan pengetahuan saya agar mampu melakukan analisa sebagai bagian proses pencarian solusi suatu masalah. Seperti pada umumnya orang yang bekerja di dunia ICT, sumber informasi utama yang hampir selalu digunakan adalah Internet dan koleksi ebooks.</p>
<p>Setelah saya evaluasi, tanpa saya sadari ternyata waktu yang saya habiskan untuk mengumpulkan sumber referensi dan kemudian memilihnya untuk dipelajari lebih lanjut jauh lebih banyak daripada waktu yang saya habiskan untuk mempelajari materi referensi tersebut!.</p>
<p><em>Conventional wisdom </em>mengajarkan kita bahwa semakin banyak pilihan semakin baik.  Tapi terlalu banyak pilihan juga justru bisa merugikan. Dalam psikologi modern, ada studi yang menghasilkan pendapat bahwa terlalu banyak pilihan justru bisa mengurangi kualitas dari hasil pemilihan dan kepuasan pemilih.</p>
<p>Semakin banyak pilihan semakin banyak pula waktu yang kita gunakan untuk membandingkan. Semakin besar pula peluang untuk menjadi kecewa atas pilihan yang kita tetapkan.</p>
<p>Untuk itulah, di masa ini dimana jumlah informasi yang tersedia begitu besar, bervariasi (termasuk keakuratannya ) dan cepat penyebarannya,  kita dituntut untuk mempunyai kemampuan dan waktu lebih untuk bisa mengambil manfaatnya secara benar dan efisien.</p>
<p>Atas pertimbangan itu pula juga saya kurang tertarik untuk aktif di mesia sosial seperti Facebook dan Twitter, termasuk pula untuk memiliki Blackberry.  Sebisa mungkin saya berusaha agar saya adalah pemegang kendali atas informasi (aktif) dan sebisa mungkin mencegah datangnya  informasi  yang berlebihan.   Sementara, penggunaan FB, Twitter dan BB membuat kita cenderung dalam kondisi pasif menerima begitu banyak informasi yang tersedia.  Perlu waktu dan energi ekstra untuk memilah mana yang bermanfaat dan mana yang tidak.</p>
<p>Bagi saya mesin pencari dan teknologi RSS sudah cukup bisa memenuhi kebutuhan atas informasi.  Ketika butuh mencari suatu informasi, saya bisa mencari lewat Google (aktif), sedangkan untuk update informasi secara pasif sampai sekarang ini RSS adalah yang paling efisien bagi saya.</p>
<blockquote><p><span style="color:#808080;"><em>When the cost of acquiring information is greater than the benefits to be derived from the information, it is rational to be ignorant.  &#8211;Theory of rational ignorance</em></span></p></blockquote>
<p>*sedang membaca:  Surviving Information Overload by Kevin A. Miller.</p>
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		<title>3 Muslim Turki</title>
		<link>http://rusiawan.wordpress.com/2011/08/03/3-muslim-turki/</link>
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		<pubDate>Wed, 03 Aug 2011 07:34:41 +0000</pubDate>
		<dc:creator>rusiawan</dc:creator>
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		<description><![CDATA[Pertama-tama, saya tidak bermaksud memberikan penilaian atau prejudice apapun terhadap orang atau golongan tertentu.  Seperti kata Ustadz Nouman Ali Khan, kita tidak boleh menghakimi/menilai seseorang, yang kita bisa (kalau ilmu kita cukup) adalah menilai perbuatannya, apakah benar atau salah. Seperti biasa, saat berbuka puasa adalah juga kesempatan ngobrol dengan saudara-saudara muslim dari negara lain. Biasanya [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=rusiawan.wordpress.com&amp;blog=510152&amp;post=771&amp;subd=rusiawan&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p><span style="color:#c0c0c0;"><a href="http://www.topnews.in/files/turkish.jpg"><span style="color:#c0c0c0;"><img class="alignnone aligncenter" src="http://www.topnews.in/files/turkish.jpg" alt="" width="300" height="225" /></span></a></span></p>
<p><span style="color:#c0c0c0;">Pertama-tama, saya tidak bermaksud memberikan penilaian atau prejudice apapun terhadap orang atau golongan tertentu.  Seperti kata Ustadz Nouman Ali Khan, kita tidak boleh menghakimi/menilai seseorang, yang kita bisa (kalau ilmu kita cukup) adalah menilai perbuatannya, apakah benar atau salah.</span></p>
<p><span style="color:#c0c0c0;">Seperti biasa, saat berbuka puasa adalah juga kesempatan ngobrol dengan saudara-saudara muslim dari negara lain. Biasanya sih yang hadir: Indonesia (langganan tetap :D), India, Pakistan, Yaman, Somalia dan tentu saja tuan rumahnya, Turki.</span></p>
<p><span style="color:#c0c0c0;">Ketika kebetulan sedang ngobrol dengan orang Turki, disela-sela pembicaraan dia menyeletuk.  Dalam bahasa Indonesia kira-kira dia bilang begini, &#8220;Eh tau nggak, kalau ada 3 orang muslim Turki baru pertama bertemu di tempat baru dan berdiskusi, apa hasilnya ?&#8221;</span></p>
<p><span style="color:#c0c0c0;">Kita bilang tidak tahu.  Apa jawaban dia ?   Dia bilang, &#8220;AYO KITA BANGUN MASJID!&#8221;</span></p>
<p><span style="color:#c0c0c0;">Hehehe.. bingung menanggapinya seperti apa, geli-geli kagum.  Tidak usah heran dimana ada komunitas Turki yang cukup signifikan, maka akan banyak juga berdiri masjid Turki.</span></p>
<p><span style="color:#c0c0c0;">Memang, diantara masyarakat muslim yang saya pernah amati, orang Turki adalah yang paling &#8220;royal&#8221; dalam bersedekah.  Paling kelihatan adalah ketika sholat Jumat, saat kotak infak diedarkan, akan jarang terdengar bunyi gemerincing, karena mereka biasanya infaknya lembaran  :D.</span></p>
<p><span style="color:#c0c0c0;">Mungkin juga karena kebanyakan imigran Turki adalah dari kaum pengusaha/pedagang (uniknya, golongan ini jugalah yang sekarang bangkit dan  dominan di pemerintahan Turki pimpinan PM Erdogan).   Mungkin juga karena itu, khotbah jumat di masjid Turki tidak panjang/lama, karena mengakomodasi jamaahnya yang harus segera kembali bekerja.</span></p>
<p><span style="color:#c0c0c0;">Pantas saja (selain karena faktor sejarah) orang-orang Eropa serba salah dengan imigran dari Turki, walaupun terkesan &#8220;mbalelo&#8221;  (terutama karena nasionalisme mereka yang sangat tinggi)  tapi mereka memegang peranan penting di perekonomian, gak bisa seenaknya ditekan atau bahkan diusir.</span></p>
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