03-21-2019
Quote:
Originally Posted by
vgersh99
Good point, Don.
I thought executing echo $(pwd) (as it's not a variable, but rather an active function) through ssh on a remote system, would return the output of command pwd from the remote, rather than local...
echo $(pwd) is superfluous anyway - should be either plain pwd or as you indicated echo \${PWD}.
Hi vgersh99,
Ouch. Yes, you're right that was a command substitution; not a variable expansion. (I do know that I need new glasses and I have an appointment with my ophthalmologist Tuesday morning.)
But, just like a variable expansion, if the <dollar-sign> isn't escaped in a command substitution, it will be performed by the local shell; not by the remote shell.
I guess seeing
echo $(pwd) I interpreted it as
echo ${pwd} instead because
pwd would be so much easier and would be interpreted by the remote shell instead of by the local shell (true for variable expansion and for command substitution). I apologize for any confusion my comments may have raised.
Sorry,
Don
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PWD(1) User Commands PWD(1)
NAME
pwd - print name of current/working directory
SYNOPSIS
pwd [OPTION]
DESCRIPTION
Print the full filename of the current working directory.
--help display this help and exit
--version
output version information and exit
NOTE: your shell may have its own version of pwd, which usually supersedes the version described here. Please refer to your shell's docu-
mentation for details about the options it supports.
AUTHOR
Written by Jim Meyering.
REPORTING BUGS
Report pwd bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
COPYRIGHT
Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.
SEE ALSO
getcwd(3)
The full documentation for pwd is maintained as a Texinfo manual. If the info and pwd programs are properly installed at your site, the
command
info coreutils 'pwd invocation'
should give you access to the complete manual.
GNU coreutils 7.1 July 2010 PWD(1)