lapack installation help needed

[jyoti pandey]

during lapack installation when i'm trying to run make command following error is coming ...

jyoti@jyoti-Compaq-Presario-CQ45-NoteBook-PC:~/lapack/lapack-3.4.2$ make
( cd INSTALL; make; ./testlsame; ./testslamch; ./testdlamch; \
./testsecond; ./testdsecnd; ./testieee; ./testversion )
make: /sbin/sh: Command not found
make: *** [lapack_install] Error 127
jyoti@jyoti-Compaq-Presario-CQ45-NoteBook-PC:~/lapack/lapack-3.4.2$

plz help how to solve this problem..

thank u..