Extract file rpm di UNIX selain RedHat dan turunannya

Jika ingi mengekstrak file *.rpm di lingkungan unix selain RedHat dan turunanya bisa memakai command rpm2cpio. #rpm2cpio *.rpm | cpio -idmv Gitu.

Update ubuntu yang Nge-lock

Jika sedang melakukan update pada ubuntu mendapatkan pesan seperti dibawah ini :

user@seruni:~$ sudo apt-get update
E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)
E: Unable to lock directory /var/lib/apt/lists/


Ada beberapa cara untuk memecahkan masalah tersebut diantaranya.

1. Meremove file locknya

user@seruni:~$sudo rm -rf /var/lib/apt/lists/lock


2. Mengkill proses yang ada hubungannya

user@seruni:~$sudo fuser -vki /var/lib/apt/lists/lock


Baru setelah dilakukan hal tersebut coba di lakukan update lagi.


Sekian

Apache no space left OpenBSD

Kalau mendapati error message di OpenBSD saat menjalankan Apache :

[Fri Sep 9 23:32:27 2011] [error] mod_ssl: Parent process could not create private SSLMutex semaphore (System error follows)
[Fri Sep 9 23:32:27 2011] [error] System: No space left on device (errno: 28)

# ipcs -T | grep semmni
semmni: 10 (# of semaphore identifiers)
# sysctl -w kern.seminfo.semmni=20
kern.seminfo.semmni: 10 -> 20
# ipcs -T | grep semmni
semmni: 20 (# of semaphore identifiers)

Restart Apache dan Check kembali.

[Fri Sep 9 23:35:30 2011] [notice] Initializing etag from /var/www/logs/etag-state
[Fri Sep 9 23:35:30 2011] [notice] chrooted in /var/www
[Fri Sep 9 23:35:30 2011] [notice] changed to uid 67, gid 67
[Fri Sep 9 23:35:30 2011] [notice] Apache configured -- resuming normal operations
[Fri Sep 9 23:35:30 2011] [notice] Accept mutex: sysvsem (Default: sysvsem)

Kalau sudah seperti diatas maka berarti sudah OK.


Salam

Mandala rest for a while

Its like socking news when reading the online newspaper that Mandala Airways is closing for a while until uncertainly time.

Why it could happen ? Its just a aweek ago when i used this Air service for going to jogja from jakarta. Deep reading in why mandala air taking rest is in the fact that Air Service Company is in difficult situation of their Financial. In another fact that beaten in competition with another air service is making so funny.

As we know mandala is one of the 'Founder' of the commercial air service in Indonesia. So whats wrong ? Hm... how about management ? When the rising trend of Air Passenger... i'ts difficult to understand but that a business.. business is not just how to sell something but sometime how to make standing up when your business is being beaten by another thing.
Hopefully Mandala Air Ways flying again Immediately and make me Fly ;)

Flush Iptables

Ternyata untuk ngeflush iptables di ubuntu agak banyak commandnya :

root@xserver:~# iptables -F
root@xserver:~# iptables -X
root@xserver:~# iptables -t nat -F
root@xserver:~# iptables -t nat -X
root@xserver:~# iptables -t mangle -F
root@xserver:~# iptables -t mangle -X
root@xserver:~# iptables -P INPUT ACCEPT
root@xserver:~# iptables -P OUTPUT ACCEPT

utak atik file [1]

Misal kita punya file test.txt yang isinya adalah

$cat test.txt
a,b,c,d,e,f,g,h
i,j,k,l,m,n,o,p
q,r,s,t,t,v,w,x

Nah kita ingin dari file tersebut diubah menjadi seperti ini :

a|b|c|d|e|f|g
i|j|k|l|m|n|o|p
q|r|s|t|u|v|w|x

Maka kita cukup dengan satu line command sebagai berikut :

$cat test.txt | awk -F"," '{print $1"|"$2"|"$3"|"$4"|"$5"|"$6"|"$7}' > test1.txt

kita coba lihat hasilnya:

$cat test1.txt
a|b|c|d|e|f|g
i|j|k|l|m|n|o|p
q|r|s|t|u|v|w|x

Aku dan dua orang custormer service di sebuah perusahaan.. xxxxxx

CS1 : "Gw sebel deh klo ada yang install software di sini.."

CS2 : "Iya gw juga kesel udah tahu tempatnya sempit harus kesana kemari.."

AKU : "*&#^*!^@(@&^#*@*!............"

CS1 : "Harusnya di ruang meeting aja tuh.. kan luas"

CS2 : "Au' tuh...."

AKU : "Garuk garuk kepala..&^#$@$%!$&*(!&@$##!$........"