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Is there a way to pass the username and password from a file instead of the command line via --user and --password?

Background: I want to run wget via cron and don't want the username/password show up in process view

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3 Answers 3

up vote 10 down vote accepted

Use a .wgetrc file (GNU manual, example) in which you can set username and passwords for either or both ftp and http.

To use the same credentials for both specify

user=casper
password=CasperPassword

or individually

ftp_user=casperftp
ftp_password=casperftppass
http_user=casperhttp
http_password=casperhttppass
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1  
The GNU wget manual also suggests using the -i option and feeding the username and password in from standard input. –  Richard May 8 '11 at 15:08

In many regards curl can be a better choice. Wget became a bit stale over time.

curl's -n switch can be used for this task: http://curl.haxx.se/docs/manpage.html#-n

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I'm surprised nobody mentioned the .netrc file. First create the file if it doesn't exists and set safe permissions:

touch ~/.netrc
chmod 600 ~/.netrc

Then you can add the hostname, username and password all on one line:

echo 'machine example.com login casper password CasperPassword' >> ~/.netrc

Then when you do wget https://example.com and the server responds with 401 Authorization Required, wget will retry with the username and password from the ~/.netrc file.

When using this from cron make sure you have the right HOME directory. Often cron sets HOME=/ (in that case you would have to create the file as /.netrc, but it's better to set a proper HOME at the beginning of your script, like export HOME=/root).

You can specify multiple hosts in ~/.netrc, one per line. More info in man netrc.

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