請問如下命令是干嘛用的，誰幫忙解釋下，很感謝！

dsy851009

#!/usr/bin/env bash


pdsh -w ^/opt/shell/master/cluster_command/adam_agent.txt $@

幫忙解釋詳細(xì)點，每個參數(shù)都代表什么意思，非常感謝！在線等，呵呵

rdcwayx

自己要先看一下幫助

man pdsh

-w TARGETS,...

Target and or filter the specified list of hosts. Do not use with any other node selection options (e.g. -a, -g, if they are available). No spaces are allowed in the comma-separated list. Arguments in the TARGETS list may include normal host names, a range of hosts in hostlist format (See HOSTLIST EXPRESSIONS), or a single '-' character to read the list of hosts on stdin.
If a host or hostlist is preceded by a '-' character, this causes those hosts to be explicitly excluded. If the argument is preceded by a single '^' character, it is taken to be the path to file containing a list of hosts, one per line. If the item begins with a '/' character, it is taken as a regular expression on which to filter the list of hosts (a regex argument may also be optionally trailed by another '/', e.g. /node.*/). A regex or file name argument may also be preceeded by a minus '-' to exclude instead of include thoses hosts.

A list of hosts may also be preceded by "user@" to specify a remote username other than the default, or "rcmd_type:" to specify an alternate rcmd connection type for these hosts. When used together, the rcmd type must be specified first, e.g. "ssh:user1@host0" would use ssh to connect to host0 as user "user1."

1. $@
   
2. 與$*同義,但是每個參數(shù)都是一個獨立的""引用字串,這就意味著參數(shù)被完整地傳遞,并沒有被解釋和擴展.這也意味著,每個參數(shù)列表中的每個參數(shù)都被當(dāng)成一個獨立的單詞.
   
3. 注意:"$@"必須被""引用.

復(fù)制代碼

rdcwayx

dsy851009 發(fā)表于 2012-11-07 12:38
#!/usr/bin/env bash

自己要先看一下幫助

1. man pdsh
   
2. 
   
3. -w TARGETS,...
   
4. 
   
5. Target and or filter the specified list of hosts. Do not use with any other node selection options (e.g. -a, -g, if they are available). No spaces are allowed in the comma-separated list. Arguments in the TARGETS list may include normal host names, a range of hosts in hostlist format (See HOSTLIST EXPRESSIONS), or a single '-' character to read the list of hosts on stdin.
   
6. If a host or hostlist is preceded by a '-' character, this causes those hosts to be explicitly excluded. If the argument is preceded by a single '^' character, it is taken to be the path to file containing a list of hosts, one per line. If the item begins with a '/' character, it is taken as a regular expression on which to filter the list of hosts (a regex argument may also be optionally trailed by another '/', e.g. /node.*/). A regex or file name argument may also be preceeded by a minus '-' to exclude instead of include thoses hosts.

復(fù)制代碼

A list of hosts may also be preceded by "user@" to specify a remote username other than the default, or "rcmd_type:" to specify an alternate rcmd connection type for these hosts. When used together, the rcmd type must be specified first, e.g. "ssh:user1@host0" would use ssh to connect to host0 as user "user1."

1. $@
   
2. 與$*同義,但是每個參數(shù)都是一個獨立的""引用字串,這就意味著參數(shù)被完整地傳遞,并沒有被解釋和擴展.這也意味著,每個參數(shù)列表中的每個參數(shù)都被當(dāng)成一個獨立的單詞.
   
3. 注意:"$@"必須被""引用.

復(fù)制代碼

dsy851009

回復(fù) 3# rdcwayx
謝謝斑竹~~~~~~~~~

   

力哥丶

$@                 所有這些參數(shù)都分別被雙引號引住。若一個腳本接收到兩個參數(shù)，$@等價于$1$2

^ 以誰為開頭。

^[^1] 除了1開頭的

dsy851009

希望這樣的回答~~~回復(fù) 5# 力哥丶


   

dsy851009

腳本名稱叫test.sh 入?yún)⑷齻�: 1 2 3運行test.sh 1 2 3后$*為"1 2 3"（一起被引號包住）$@為"1" "2" "3"（分別被包�。�$#為3（參數(shù)數(shù)量）

dsy851009

pdsh 是對集群進行批量操作的命令

dsy851009

如果目標(biāo)前為“^”，則用來指示包含目標(biāo)主機的文件，文件中每行一個該機名