It is harder, without source sample data to also work with, but, I believe the following would work:
ssh $id@$ip "cat /dog/aaa.dat | awk \'\!a[\$0]++\' > /dog/aaa.dat_tmp"
Backslashes before both of the single quotes, before the exclamation mark (processed by the bash shell affecting history), and before the dollarsign (processed by the bash shell, as an environment variable).
Another option might be to escape (i.e. place a backslash) before the open and close brackets ([ ]).
From: bruce <badouglas@xxxxxxxxx>
To: Community support for Fedora users <users@xxxxxxxxxxxxxxxxxxxxxxx>
Sent: Tuesday, June 20, 2017 10:20 AM
Subject: remote ssh awk!
Hey...
Curious as to how to get the following to work remotely over SSH. The
cmd is used to remove redundant lines, while maintaining order in the
output file.
The following works if I insert it in the remote term.
cat /dog/aaa.dat | awk '!a[$0]++' > /dog/aaa.dat_tmp
However I'm unable to get the cmd to work via SSH from the local to
the remote. I've tried the following...
ssh crawl_user@67.205.11.111 cat /dog/aaa.dat | awk '!a[$0]++' >
/dog/aaa.dat_tmp
ssh crawl_user@67.205.11.111 ' cat /dog/aaa.dat | awk '!a[$0]++' >
/dog/aaa.dat_tmp '
ssh crawl_user@67.205.11.111 " cat /dog/aaa.dat | awk '!a[$0]++' >
/dog/aaa.dat_tmp "
ssh crawl_user@67.205.11.111 ' cat /dog/aaa.dat | awk '\!a[$0]++' >
/dog/aaa.dat_tmp '
ssh crawl_user@67.205.11.111 " cat /dog/aaa.dat | awk '\!a[$0]++' >
/dog/aaa.dat_tmp "
ssh crawl_user@67.205.11.111 ' cat /dog/aaa.dat | awk '"\!"a[$0]++' >
/dog/aaa.dat_tmp '
ssh crawl_user@67.205.11.111 " cat /dog/aaa.dat | awk '"\!"a[$0]++' >
/dog/aaa.dat_tmp "
In some cases, the cmd returns -- bash: !a[$0]++: event not found
In the case
ssh crawl_user@67.205.11.111 " cat /dog/aaa.dat | awk '\!a[$0]++' >
/dog/aaa.dat_tmp "
the return is:
awk: \!a[bash]++
awk: ^ backslash not last character on line
The escapsed cmds seem to work, but in reality, only generates the 1st
line in the file!
ssh crawl_user@67.205.11.111 " cat /dog/aaa.dat | awk '"\!"a[$0]++'
> /dog/aaa.dat_tmp "
Thoughts/comments???
Thanks
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