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README.md

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日常shell工具整理：

isvn

这是一个svn命令的工具包，主要提供以下功能：

  • 切换到主干
  • 切换到任意分支
  • 分支列表
  • 从任意分支(主干)创建新分支

这个工具只适用与淘宝svn仓库，svn地址类似：http://svn.app.taobao.net/repos/xxx/trunk/xxx

用法

isvn help
Usage: isvn [options]
Subversion utils.
	Options:
	bl [regex] - list branches match the regex in current repository. If no regex, list all branches
	sb [branch] - switch to [branche], the [branche] can be a regexp. 
                  If it match more than one branches, a selector will display.
                  If the branch is trunk, it will create new branch from trunk.
	t - switch to trunk
	nb [from] [to] - create new branch [to] from [from]. If [from] is "trunk", copy code from trunk.

Example:
    isvn bl
    isvn t
    isvn sb a.*
    isvn nb trunk test
    isvn help

ping-range

这个工具用来检查一个ip范围是否可以ping通

用法

./ping-range 192.168.1 100 105
IP 192.168.1.100 is UP
IP 192.168.1.101 is DOWN
IP 192.168.1.102 is UP
IP 192.168.1.103 is UP
IP 192.168.1.104 is DOWN
IP 192.168.1.105 is DOWN

jvm_gcwatch

查看JVM的GC情况，没1s刷新一次。

用法

./jvm_gcwatch [features]

Every 1.0s: jstat -gcutil 23884                                                Sun Jan 26 22:16:19 2014

S0     S1     E      O      P     YGC     YGCT    FGC    FGCT     GCT
4.15   0.00  44.78  40.13  71.69  16680  136.225   124   11.770  147.995

features 为jvm进程相关的字符串或者pid。