1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Long: proxy-user 5Short: U 6Arg: <user:password> 7Help: Proxy user and password 8Category: proxy auth 9Added: 4.0 10Multi: single 11See-also: 12 - proxy-pass 13Example: 14 - --proxy-user smith:secret -x proxy $URL 15--- 16 17# `--proxy-user` 18 19Specify the username and password to use for proxy authentication. 20 21If you use a Windows SSPI-enabled curl binary and do either Negotiate or NTLM 22authentication then you can tell curl to select the username and password from 23your environment by specifying a single colon with this option: "-U :". 24 25On systems where it works, curl hides the given option argument from process 26listings. This is not enough to protect credentials from possibly getting seen 27by other users on the same system as they still are visible for a moment 28before cleared. Such sensitive data should be retrieved from a file instead or 29similar and never used in clear text in a command line. 30