I'm using a Windows command file:

@Echo Off
MODE con:cols=5000 lines=80
cmd /k "title & x:\dir\Putty\PLINK.EXE -ssh name@connection tail -f /opt/dir1/dir2/Blabla_Debug.log"

This works like a charm. It's executable from my client and gives me a tail on the logfile and a decent header in the cmd-box (so I know what I'm looking at).

But now I want to execute a grep on the logfile.

I've tried to add '| grep text' (without the quotes) but that results in an error (in the command box): 'grep' is not recognized as an internal or external command.

So what I've tried is:

cmd /k "title & x:\dir\Putty\PLINK.EXE -ssh name@connection tail -f /opt/dir1/dir2/Blabla_Debug.log | grep text" 
  • you need to get the grep to be part of the ssh command; wrap single quotes around the tail and grep – Jeff Schaller Feb 3 '17 at 16:21

In your example, the argument of the title command is missed

cmd.exe /k "title dnslogger & PLINK.EXE -ssh root@xenial.local tail -f /var/log/dnsmasq.log | grep -v DHCP"
| improve this answer | |
  • Thanks for your reaction, unfortunately that doesn't help. Still the same error. – Vince Feb 7 '17 at 8:31
  • Windows Version and Version of cmd.exe? Please post the output from cmd.exe /k ver – ingopingo Feb 11 '17 at 16:07
  • I'm using: Windows 2008 R2 Result of cmd.exe /k ver is [Version 6.1.7601] – Vince Feb 20 '17 at 9:36
  • Create a textfile with the complete shell command, for example logintail.sh with the command line as content tail -f /var/log/mail.log | stdbuf -o0 grep Login:. The plink command is now PLINK.EXE -batch -ssh -agent -i mykey.ppk -m logintail.sh you@yourserver.local. It works on 2008R2. – ingopingo Feb 21 '17 at 18:40
  • nice! Creating a script.sh file on the Windows site was something I didn't think of. It's working. Even with the cmd /k "title .... feature. – Vince Feb 23 '17 at 12:52

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