linux - Executing an if statement after a specific output in expect script -

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is there way execute if statement if see specific output? example, when console says "bad interpreter permission denied" want execute command "dos2unix file_name"? logic following,

if (output "bad interpreter permission denied") {   send dos2unix file_name } fi

this expect script.

edit:

hi guys able in expect script?

if (grep -cim1 '^m$' lruload.sh) -eq 1; send dos2unix filename fi

how logic/psuedo-code?

export cmdtext=`mycmd param1 param2 2>&1` if ($cmdtext "bad interpreter permission denied") {     send dos2unix file_name } fi

the permission denied text went stderr, not stdout, redirect 2>&1 lumps both of them together, making test simple.


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