$ du
Typing the above at the prompt gives you a list of directories that exist in the current directory along with their sizes. The last line of the output gives you the total size of the current directory including its subdirectories. The size given includes the sizes of the files and the directories that exist in the current directory as well as all of its subdirectories. Note that by default the sizes given are in kilobytes.

$ du /home/david
The above command would give you the directory size of the directory /home/david

$ du -h
This command gives you a better output than the default one. The option ‘-h’ stands for human readable format. So the sizes of the files / directories are this time suffixed with a ‘k’ if its kilobytes and ‘M’ if its Megabytes and ‘G’ if its Gigabytes.

$ du -ah
This command would display in its output, not only the directories but also all the files that are present in the current directory. Note that ‘du’ always counts all files and directories while giving the final size in the last line. But the ‘-a’ displays the filenames along with the directory names in the output. ‘-h’ is once again human readable format.

$ du -c
This gives you a grand total as the last line of the output. So if your directory occupies 30MB the last 2 lines of the output would be

30M .
30M total

The first line would be the default last line of the ‘du’ output indicating the total size of the directory and another line displaying the same size, followed by the string ‘total’. This is helpful in case you this command along with the grep command to only display the final total size of a directory as shown below.

$ du -ch | grep total
This would have only one line in its output that displays the total size of the current directory including all the subdirectories.

Note : In case you are not familiar with pipes (which makes the above command possible) refer to Article No. 24 . Also grep is one of the most important commands in Unix. Refer to Article No. 25 to know more about grep.

$ du -s
This displays a summary of the directory size. It is the simplest way to know the total size of the current directory.

$ du -S
This would display the size of the current directory excluding the size of the subdirectories that exist within that directory. So it basically shows you the total size of all the files that exist in the current directory.

$ du –exculde=mp3
The above command would display the size of the current directory along with all its subdirectories, but it would exclude all the files having the given pattern present in their filenames. Thus in the above case if there happens to be any mp3 files within the current directory or any of its subdirectories, their size would not be included while calculating the total directory size.

-

‘df’ - finding the disk free space / disk usage

$ df
Typing the above, outputs a table consisting of 6 columns. All the columns are very easy to understand. Remember that the ‘Size’, ‘Used’ and ‘Avail’ columns use kilobytes as the unit. The ‘Use%’ column shows the usage as a percentage which is also very useful.

$ df -h
Displays the same output as the previous command but the ‘-h’ indicates human readable format. Hence instead of kilobytes as the unit the output would have ‘M’ for Megabytes and ‘G’ for Gigabytes.

Most of the users don’t use the other parameters that can be passed to ‘df’. So I shall not be discussing them.

I shall in turn show you an example that I use on my machine. I have actually stored this as a script named ‘usage’ since I use it often.

Example :

I have my Linux installed on /dev/hda1 and I have mounted my Windows partitions as well (by default every time Linux boots). So ‘df’ by default shows me the disk usage of my Linux as well as Windows partitions. And I am only interested in the disk usage of the Linux partitions. This is what I use :

$ df -h | grep /dev/hda1 | cut -c 41-43

This command displays the following on my machine

45%

Kaynak: http://www.codecoffee.com/tipsforlinux/articles/22.html

useful dns parameters

find / -type f -exec grep -H 'Linux123' {} ;

nerdesin be guk?

durağa gidiyorum, otobüs geçiyor, binmiyorum. otobüs geçiyor içine bakıyorum, ya oradaysan. otobüs uzaklaşıyor ben niye binmedim ki? diyorum.  otobüse biniyorum, oraya kadar gelip, geri dönüyorum, ya evde yoksan guk?

canım acıyor, kalbimi sökesim geliyor. bir elimi atıyorum kalbime, kalbim atıyor ikimize. geri çekiyorum elimi. sesini dinliyorum “guk, guk. guk,guk” diye atıyor. kalbim atıyor, elim kaçıyor.

ben seni dinliyorum, sen ses vermiyorsun. ben senin sessizliğini severim ama benim sensizliğim hiç çekilmiyor be guk…

ama beklemeye değecek guk… beklemeye değecek biliyorum…

Seni seviyorum

Havada, ilkbaharı getiren rüzgarın havalandırdığı toz kokusu var. Şimdi Kanlıca’dayım evimin aşağısındaki yokuştan aşağıya doğru sahile iniyorum. İnmesem mi? Kalabalık, ses… neyse gitmiyorum yoldan döndüm geriye doğru fakat yokuş çok dik gidemiyorum. sanki birşey geri dönmemi engelliyor. yine vaz geçtim aşağı tekrar sahile iniyorum… Yüzüme vuracak sıcak rüzgar ve denizin kokusunu duymaya başladım. Bu eski evlerin teraslarından sarkan adını bilmediğim çiçeklerin kokusu, hmmm çok güzel. insan hep bu yoldan yürümek istiyor.

Birden bire kendimi Kavacık’ta otobüs beklerken buluyorum… çiçek kokusu nerde? yine aynı toz kokusu… nereye gideceğimi bilmiyorum ve kardeşim yanımda… çok uzağa gidecek olamam. Gideceğimiz yönün tersi yönünde lacivert bir otobüs geçti camdan bir kız bakıyor, aniden kardeşime dönüp bak gördün mü? daha önce de bir yerde gördüm onu dedim. aa evet. diye cevap verdi.

uyandım…

kapıdan dışarı baktım yine aynı toz kokusu fakat her yer yeşil… Bir koşuşturma var fakat her sabah olan koşuşturma…

ve saat 7:30 ben geç kalmışım dünyaya…

Cumartesi, Mart 25, 2006

Çıktı:
/var/lib/dpkg/info
/var/log/ksymoops
/usr/share/doc/HOWTO/en-html
/usr/share/man/man3

Büyük Dosyaları Bulmak İçin
# find / -type f -size +20000k

Çıktı:
/var/log/kern.log
/sys/devices/pci0000:00/0000:00:02.0/resource0
/sys/devices/pci0000:00/0000:00:00.0/resource0
/opt/03Jun05/firefox-1.0.4-source.tar.bz2

favori komut ise:

# find / -type f -size +20000k -exec ls -lh {} \; | awk '{ print $8 ": " $5 }'

Çıktı:
/var/log/kern.log: 22M
/sys/devices/pci0000:00/0000:00:02.0/resource0: 128M
/sys/devices/pci0000:00/0000:00:00.0/resource0: 256M
/opt/03Jun05/firefox-1.0.4-source.tar.bz2: 32M

teşekkürler

(more…)