ssh执行命令
- 执行一条命令
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ssh user@ip command
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- 执行多条命令
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ssh user@ip "command1;command2" #分号隔开
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- 关于转义
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ssh user@ip 'echo $HOME' #单引号，本机不转义，到目标机器执行 ssh user@ip "echo $HOME" #双引号，先在本机转义，到目标ip执行
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[root@ricky01 ~]# ssh ricky02@192.168.56.101 'echo $HOME' #单引号，先不转义，到目标机器执行echo $HOME
ricky02@192.168.56.101's password:
/home/ricky02[root@ricky01 ~]# ssh ricky02@192.168.56.101 "echo $HOME" #双引号，先把$HOME转成/root，到目标机器执行echo /root
ricky02@192.168.56.101's password:
/root
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- 关于awk
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ip a|grep 192.168*|awk '{ print $2 }' 192.168.56.102/24 #本机可以正确执行
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[root@ricky01 ~]# ssh 192.168.56.101 ip a|grep 192.168*|awk '{ print $2 }' #单条命令，不加引号，可以执行 root@192.168.56.101's password: 192.168.56.101/24
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[root@ricky01 ~]# ssh 192.168.56.101 'ip a|grep 192.168*|awk '{ print $2 }'' #加单引号，报错 root@192.168.56.101's password: awk: cmd. line:1: { awk: cmd. line:1: ^ unexpected newline or end of string
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[root@ricky01 ~]# ssh 192.168.56.101 "ip a|grep 192.168*|awk '{ print $2 }'" #加双引号，没有执行awk root@192.168.56.101's password: inet 192.168.56.101/24 brd 192.168.56.255 scope global dynamic enp0s8
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[root@ricky01 ~]# ssh 192.168.56.101 "ip a|grep 192.168*|awk '{ print \$2 }'" #双引号，$前加转义符号\，正确执行 root@192.168.56.101's password: 192.168.56.101/24
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[root@ricky01 ~]# ssh 192.168.56.101 'ip a|grep 192.168*|awk '{ print \$2 }'' #单引号，$前加转义符号\，报错
root@192.168.56.101's password: awk: cmd. line:1: { awk: cmd. line:1: ^ unexpected newline or end of string
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