Category: Linux

JPackage is a project that provides Java related libraries as RPM

Thre are a lot of RPM related to JAVA such as Tomcat and etc.

[vagrant@localhost ~]$ yum list installed | grep jpackage-utils
jpackage-utils.noarch              1.7.5-3.16.el6                    @base
[vagrant@localhost ~]$

Fontconfig is a library for providing the application with information on system-wide font settings (alternative font settings, font substitution settings, rendering settings, etc.)

[vagrant@localhost ~]$ yum list installed | grep fontconfig
fontconfig.x86_64 2.8.0-5.el6 @base
[vagrant@localhost ~]$

[vagrant@localhost ~]$ yum list installed | grep pulseaudio-libs
[vagrant@localhost ~]$

うーん、audioの設定？？

$ sudo yum install pulseaudio-libs

依存性関連をインストールしました:
  flac.x86_64 0:1.2.1-7.el6_6             libasyncns.x86_64 0:0.8-1.1.el6
  libogg.x86_64 2:1.1.4-2.1.el6           libsndfile.x86_64 0:1.0.20-5.el6
  libvorbis.x86_64 1:1.2.3-5.el6_9.1

完了しました!

サウンド関連モジュールを見てみたい。
[vagrant@localhost ~]$ lsmod | grep snd
snd_intel8x0 30524 0
snd_ac97_codec 125159 1 snd_intel8x0
ac97_bus 1452 1 snd_ac97_codec
snd_seq 61189 0
snd_seq_device 7277 1 snd_seq
snd_pcm 94209 2 snd_intel8x0,snd_ac97_codec
snd_timer 22843 2 snd_seq,snd_pcm
snd 74199 6 snd_intel8x0,snd_ac97_codec,snd_seq,snd_seq_device,snd_pcm,snd_timer
soundcore 7990 1 snd
snd_page_alloc 8856 2 snd_intel8x0,snd_pcm

インストール済みの確認
[vagrant@localhost ~]$ yum list installed | grep alsa-lib
alsa-lib.x86_64 1.1.0-4.el6 @base

alsa-lib: ALSA サウンドインターフェースへのアクセスを必要とする (ALSA ユーティリティ を含む) プログラムが利用する ALSA ライブラリ
http://lfsbookja.osdn.jp/BLFS/svn-ja/multimedia/alsa-lib.html

[vagrant@localhost ~]$ yum list installed | grep giflib
giflib.x86_64 4.1.6-3.1.el6 @base
giflib:The GIFLIB project maintains the giflib service library, which has been pulling images out of GIFs since 1989. It is deployed everywhere you can think of and some places you probably can’t – graphics applications and web browsers on multiple operating systems, game consoles, smartphones, and likely your ATM too
http://giflib.sourceforge.net/

If you are trying to run it regularly using cron, you will only get the execution log in “/var/log/cron.log”.
Therefore, the following is a reference as a method for letting the execution result of the command be outputted to the file.

1. Standard output
When outputting only standard output
/path/script.sh 1 > /path/exec.log

2. Error output
When only error output is issued
/path/script.sh 2 > /path/error.log

3. Standard output and error output part1
When outputting both outputs to one file
/path/script.sh > /path/both.log 2>&1

4. Standard output and error output No.2
When outputting each output to a separate file
/path/script.sh 1 > /path/exec.log 2> /path/error.log

Delete the cache with the yum clean command and check and execute the yum update. The file for caching rpm packages and data used for installing or updating by yum is saved in /var/cache/yum. Can confirm with the “du” command.

[vagrant@localhost tests]$ du -sh /var/cache/yum
179M    /var/cache/yum

/dev/null, also called null device, is one special file in Unix or Unix-type operating system, discards all the data written in it(write system call succeeds). It does not return data to any process (returns EOF)

[vagrant@localhost tests]$ sudo cat /dev/null
[vagrant@localhost tests]$

mkdir -p option (–parents option)
If there is no directory without describing an error and create it.

[vagrant@localhost tests]$ ls
index.php test
[vagrant@localhost tests]$ mkdir -p test
[vagrant@localhost tests]$ ls
index.php test
[vagrant@localhost tests]$ mkdir -p test2
[vagrant@localhost tests]$ ls
index.php test test2

ip6tables is used to set, manage and check the table of the IPv6 packet filter rules of the Linux kernel. There is a possibility that several different tables are defined. Each table contains a built in chain. It can also contain user-defined chains. Each rule specifies what to do for matched packet. This is called a “target” and sometimes jumps to a user-defined chain in the same table.

# service iptables stop
# service ip6tables stop
# chkconfig iptables off
# chkconfig ip6tables off