My wifi is not working since I uninstalled network-manager-gnome.

The output of

sudo lshow -C network 

is

  *-network DISABLED

       description: Wireless interface

       product: PRO/Wireless 5100 AGN [Shiloh] Network Connection

       vendor: Intel Corporation

       physical id: 0

       bus info: pci@0000:02:00.0

       logical name: wlan0

       version: 00

       serial: 00:21:5d:9c:b9:c6

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

       configuration: broadcast=yes driver=iwlwifi driverversion=3.11.0-22-generic firmware=8.83.5.1 build 33692 latency=0 link=no multicast=yes wireless=IEEE 802.11abgn

       resources: irq:47 memory:98700000-98701fff

  *-network

       description: Ethernet interface

       product: 88E8042 PCI-E Fast Ethernet Controller

       vendor: Marvell Technology Group Ltd.

       physical id: 0

       bus info: pci@0000:85:00.0

       logical name: eth0

       version: 00

       serial: 00:22:64:57:9a:33

       capacity: 100Mbit/s

       width: 64 bits

       clock: 33MHz

       capabilities: pm msi pciexpress bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd autonegotiation

       configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 latency=0 link=no multicast=yes port=twisted pair

       resources: irq:45 memory:98600000-98603fff ioport:2000(size=256)

How do i enable my wifi on the terminal since I don't have the network manager GUI.

Doing

ifconfig wlan0 up

returned this error

SIOCSIFFLAGS: Operation not permitted

and when I used sudo I got

SIOCSIFFLAGS: Operation not possible due to RF-kill

Doing

lsmod

returned

    Module                  Size  Used by

nls_iso8859_1          12617  0 

usb_storage            48631  0 

pci_stub               12550  1 

vboxpci                22910  0 

vboxnetadp             13328  0 

vboxnetflt             27240  0 

vboxdrv               252210  3 vboxpci,vboxnetadp,vboxnetflt

bnep                   19210  2 

rfcomm                 59026  12 

snd_hda_codec_analog    75690  1 

parport_pc             32114  0 

ppdev                  17423  0 

arc4                   12509  2 

iwldvm                226487  0 

binfmt_misc            17268  1 

mac80211              534971  1 iwldvm

uvcvideo               72275  0 

snd_hda_intel          43326  2 

videobuf2_core         39385  1 uvcvideo

snd_hda_codec         169608  2 snd_hda_codec_analog,snd_hda_intel

videodev              107944  2 uvcvideo,videobuf2_core

snd_hwdep              13276  1 snd_hda_codec

snd_pcm                94597  2 snd_hda_intel,snd_hda_codec

videobuf2_vmalloc      13048  1 uvcvideo

snd_seq_midi           13132  0 

snd_rawmidi            25157  1 snd_seq_midi

btusb                  23534  0 

i915                  615880  3 

snd_seq_midi_event     14475  1 snd_seq_midi

videobuf2_memops       13170  1 videobuf2_vmalloc

bluetooth             341971  24 bnep,rfcomm,btusb

iwlwifi               153182  1 iwldvm

snd_seq                55716  2 snd_seq_midi,snd_seq_midi_event

snd_timer              28930  2 snd_pcm,snd_seq

snd_seq_device         14137  3 snd_seq_midi,snd_rawmidi,snd_seq

drm_kms_helper         47306  1 i915

drm                   247722  4 i915,drm_kms_helper

psmouse                92826  0 

snd                    61270  14 snd_hda_codec_analog,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq_midi,snd_rawmidi,snd_seq,snd_timer,snd_seq_device

soundcore              12600  1 snd

snd_page_alloc         18398  2 snd_hda_intel,snd_pcm

cfg80211              416271  3 iwldvm,mac80211,iwlwifi

joydev                 17329  0 

i2c_algo_bit           13316  1 i915

serio_raw              13189  0 

hp_wmi                 17834  0 

lpc_ich                16987  0 

hp_accel               25756  0 

sparse_keymap          13658  1 hp_wmi

video                  19046  1 i915

lis3lv02d              19600  1 hp_accel

wmi                    18744  1 hp_wmi

mac_hid                13077  0 

input_polldev          13648  1 lis3lv02d

lp                     13359  0 

parport                40930  3 parport_pc,ppdev,lp

ahci                   25703  2 

sky2                   53656  0 

libahci                30834  1 ahci

Doing

sudo rfkill list all

returned

0: hp-wifi: Wireless LAN

    Soft blocked: yes

    Hard blocked: no

2: hp-bluetooth: Bluetooth

    Soft blocked: no

    Hard blocked: no

3: hp-gps: GPS

    Soft blocked: yes

    Hard blocked: yes

4: phy0: Wireless LAN

    Soft blocked: yes

    Hard blocked: yes

5: hci0: Bluetooth

    Soft blocked: no

    Hard blocked: no

running

lspci -nn | grep -i net

returned

02:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 5100 AGN [Shiloh] Network Connection [8086:4237]

85:00.0 Ethernet controller [0200]: Marvell Technology Group Ltd. 88E8042 PCI-E Fast Ethernet Controller [11ab:4357]

I do not understand why am getting this error and I have not uninstalled my wifi drivers which were working well before