Grep imagin nameofthefile.log

For the propene (HF 6-21G) I had this in the terminal

[intellimac4:~] aurelie% grep imagin /Users/aurelie/Tutorial/Calculs/aurelie_freq_hf2_propene.log 
 ******    1 imaginary frequencies (negative Signs) ****** 
    1 imaginary frequencies ignored.
[intellimac4:~] aurelie%

So the terminal indicates me that there is just 1 imaginary frequency in the file, I just hqve to look at the sign of the frequencies in the file.

For the cyclopropane(HF 6-21G) I had this in the terminal

[intellimac4:~] aurelie% grep imagin /Users/aurelie/Tutorial/Calculs/aurelie_freq_hf2_cyclopropane.log 
[intellimac4:~] aurelie% 

This lack of information is nor a failure of the preogramme it is just that there is no imaginary frequency in the file .lof of cyclopropane.