Você pode tentar adicionar "&" para forçar o terminal a executar o wget em segundo plano. Corrija-me se eu estiver errado. Isso funcionou para mim. Eu tentei sair do prompt usando ctrl + c, mas o terminal continuou a exibir o progresso do download.
user@blr-lv553:~/psuresh_perforc# wget -O -b "http://93.174.95.27/get/D9711B1858C8BE7CF2DB8774DA10975B/%28Hindu%20Astrology%20Series%29%20V.P.Goel-Predict%20Effectively%20through%20Yogini%20Dasha-Vani%20Publications%20%282006%29.pdf" &
[1] 32484
Connecting to 93.174.95.27:80... connected.#
HTTP request sent, awaiting response... 200 OK#
Length: 27052673 (26M) [application/octet-stream]
Saving to: '-b'
1% [> ] 398,794 108KB/s eta 3m 29s
user@blr-lv553:~/psuresh_perforce$ #
2% [==> ] 805,682 162KB/s eta 3m 35s ^C
7% [========> ] 2,118,066 427KB/s eta 98s ^C
8% [==========> ] 2,394,098 482KB/s eta 98s ^C
9% [===========> ] 2,689,530 532KB/s eta 98s ^C
11% [=============> ] 3,061,666 694KB/s eta 59s ^C
user@blr-lv553:~/psuresh_perforce$ ^C#
user@blr-lv553:~/psuresh_perforce$ ^C#
100%[==============================================================================================================================>] 27,052,673 791KB/s in 87s
2017-02-20 08:48:35 (304 KB/s) - '-b' saved [27052673/27052673]#
FINISHED --2017-02-20 08:48:35--
Total wall clock time: 1m 27s
Downloaded: 1 files, 26M in 1m 27s (304 KB/s)
[1]+ Exit 4 wget -O -b
-Hope this helps#