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I am trying to execute a command in Linux servers to fetch which all servers requires root password reset as there are multiple servers I am using an expect script to automate it , my command contains special characters like double quotes and grave accent ` . so on execution it give extra characters after double quotes as an error . 

send " chage -l root | grep -i "Password expires" | if [[ `awk -F : '{print $2}' ` = "never" ]] ; then echo "password needs to be changed " ;else echo "skipping reset " ; fi;\r"

I tried using \ with double quotes but the error remains same

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` is not the problem, the problem is $2 in the awk script. – Johannes Kuhn Mar 12 at 10:55
up vote 3 down vote

If you want a string with no interpolation in Tcl (the language expect uses), and it does not have have {} chars or variables you want to expand, then enclose it in {}. Eg:

send { chage -l root | grep -i "Password expires" | if [[ `awk -F : '{print $2}' ` = "never" ]] ; then echo "password needs to be changed " ;else echo "skipping reset " ; fi;}
send \r
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up vote 0 down vote

Where did you put back-slashes? On all quotes or only on the inner ones like this?

send " chage -l root | grep -i \"Password expires\" | if [[ `awk -F : '{print \$2}' ` = \"never\" ]] ; then echo \"password needs to be changed \" ;else echo \"skipping reset \" ; fi;\r"

And yes, you need to \ a $ character also, because this string will be passed to the command and you don't need bash to resolve it too early.

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