check if file exists on remote host with ssh

I would like to check if a certain file exists on the remote host. I tried this:

$ if [ ssh reg@localhost -p 19999 -e /home/reg/Dropbox/New_semiosNET/Research_and_Development/Puffer_and_Traps/Repeaters_Network/UBC_LOGS/log1349544129.tar.bz2 ] then echo "okidoke"; else "not okay!" fi
-sh: syntax error: unexpected "else" (expecting "then") 

---

这是一个简单的方法：

if ssh $HOST stat $FILE_PATH > /dev/null 2>&1
            then
                    echo "File exists"
            else
                    echo "File does not exist"

fi

---

In addition to the answers above, there's the shorthand way to do it:

ssh -q $HOST [[ -f $FILE_PATH ]] && echo "File exists" || echo "File does not exist";

-q is quiet mode, it will suppress warnings and messages.

As @Mat mentioned, one advantage of testing like this is that you can easily swap out the -f for any test operator you like: -nt , -d , -s etc...

Test Operators: http://tldp.org/LDP/abs/html/fto.html

---

不能比这更简单:)

ssh host "test -e /path/to/file"
if [ $? -eq 0 ]; then
    # your file exists
fi

链接地址: http://www.djcxy.com/p/97126.html

上一篇: 获取后台进程的退出代码

下一篇: 用ssh检查远程主机上是否存在文件