Unable to open or incompatable vdproj solution

When using Visual Studio (recent versions), with vdproj files, you may get an error or warning that the file is incompatible or unable to open.

Bash comparisons

 

integer comparison

-eq

    is equal to

    if [ "$a" -eq "$b" ]

-ne

    is not equal to

    if [ "$a" -ne "$b" ]

-gt

    is greater than

    if [ "$a" -gt "$b" ]

-ge

    is greater than or equal to

    if [ "$a" -ge "$b" ]

-lt

    is less than

    if [ "$a" -lt "$b" ]

-le

    is less than or equal to

    if [ "$a" -le "$b" ]

string comparison

==

    is equal to

    if [ "$a" == "$b" ]

!=

    is not equal to

    if [ "$a" != "$b" ]

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