alan:~/LIME_SRC/soapySDR$ mkdir mybuild alan:~/LIME_SRC/soapySDR$ cd mybuild alan:~/LIME_SRC/soapySDR/mybuild$ cp /LIME_SRC/soapySDR/name "CMakeLists.txt" /LIME_SRC/soapySDR/mybuild cp: target '/LIME_SRC/soapySDR/mybuild' is not a directory 21 Answer
you must use
cp LIME_SRC/soapySDR/name "CMakeLists.txt" LIME_SRC/soapySDR/mybuild or
cp ~/LIME_SRC/soapySDR/name "CMakeLists.txt" ~/LIME_SRC/soapySDR/mybuild instead of
cp /LIME_SRC/soapySDR/name "CMakeLists.txt" /LIME_SRC/soapySDR/mybuild because your repertory mybuild is located in /home/alan/LIME_SRC/soapySDR/mybuild and not in /LIME_SRC/soapySDR/mybuild