Fehler beim installation von aircrack-ng

Hallo, ich habe versucht aircrack-ng auf ubuntu 14.04 LTS zu installieren, aber wenn ich make install eingebe dann passiert folgendes:
make install
make -C src all
make[1]: Entering directory `/home/j4x/aircrack-ng-1.2-rc1/src'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/j4x/aircrack-ng-1.2-rc1/src'
make -C src install
make[1]: Entering directory `/home/j4x/aircrack-ng-1.2-rc1/src'
make -C osdep install
make[2]: Entering directory `/home/j4x/aircrack-ng-1.2-rc1/src/osdep'
Building for Linux
make[3]: Entering directory `/home/j4x/aircrack-ng-1.2-rc1/src/osdep'
make[3]: `.os.Linux' is up to date.
make[3]: Leaving directory `/home/j4x/aircrack-ng-1.2-rc1/src/osdep'
make[2]: Leaving directory `/home/j4x/aircrack-ng-1.2-rc1/src/osdep'
install -d /usr/local/bin
install -m 755 aircrack-ng airdecap-ng packetforge-ng ivstools kstats makeivs-ng airdecloak-ng wpaclean /usr/local/bin
install: cannot create regular file ‘/usr/local/bin/aircrack-ng’: Permission denied
install: cannot create regular file ‘/usr/local/bin/airdecap-ng’: Permission denied
install: cannot create regular file ‘/usr/local/bin/packetforge-ng’: Permission denied
install: cannot create regular file ‘/usr/local/bin/ivstools’: Permission denied
install: cannot create regular file ‘/usr/local/bin/kstats’: Permission denied
install: cannot create regular file ‘/usr/local/bin/makeivs-ng’: Permission denied
install: cannot create regular file ‘/usr/local/bin/airdecloak-ng’: Permission denied
install: cannot create regular file ‘/usr/local/bin/wpaclean’: Permission denied
make[1]: *** [install] Error 1
make[1]: Leaving directory `/home/j4x/aircrack-ng-1.2-rc1/src'
make: *** [install] Error 2

Was soll ich jetzt tun?
 
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