As of 20170711, the servername ftp.xs4all.nl does not support the ftp protocol any more; xs4all clients can only use the server sftp.xs4all.nl on port 22.
I missed that because I hardly use ftp except for the few rare occasions where I was in an environment without ftp.
So recently I found out: good move!
Since I still need this every now and then (but far less often than 10 years ago), I have set up a very small ftp server at home with limited storage and very limited users that I can turn on/off when needed.
If you ever ssh into something and immediately get the immediate Too many authentication failures message, then you’ve probably mixed your authentication methods.
Video via +Kristian Köhntopp “Die 90er haben angerufen und wollen ihre Amiga Videos und ihre Corba Specs zurück haben.” (the 90s called wanting their Amiga Videos and Corba Specs back)
/ ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$ / g
Explanation:
^ asserts position at start of the string
1st Capturing Group (([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}
{3} Quantifier — Matches exactly 3 times
A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you’re not interested in the data
2nd Capturing Group ([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])
1st Alternative [0-9]
Match a single character present in the list below [0-9] 0-9 a single character in the range between 0 (ASCII 48) and 9 (ASCII 57) (case sensitive)
2nd Alternative [1-9][0-9]
Match a single character present in the list below [1-9] 1-9 a single character in the range between 1 (ASCII 49) and 9 (ASCII 57) (case sensitive)
Match a single character present in the list below [0-9] 0-9 a single character in the range between 0 (ASCII 48) and 9 (ASCII 57) (case sensitive)
3rd Alternative 1[0-9]{2}
1 matches the character 1 literally (case sensitive)
Match a single character present in the list below [0-9]{2} {2} Quantifier — Matches exactly 2 times 0-9 a single character in the range between 0 (ASCII 48) and 9 (ASCII 57) (case sensitive)
4th Alternative 2[0-4][0-9]
2 matches the character 2 literally (case sensitive)
Match a single character present in the list below [0-4] 0-4 a single character in the range between 0 (ASCII 48) and 4 (ASCII 52) (case sensitive)
Match a single character present in the list below [0-9] 0-9 a single character in the range between 0 (ASCII 48) and 9 (ASCII 57) (case sensitive)
5th Alternative 25[0-5]
25 matches the characters 25 literally (case sensitive)
Match a single character present in the list below [0-5] 0-5 a single character in the range between 0 (ASCII 48) and 5 (ASCII 53) (case sensitive)
\. matches the character . literally (case sensitive)
3rd Capturing Group ([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])
1st Alternative [0-9]
Match a single character present in the list below [0-9]
0-9 a single character in the range between 0 (ASCII 48) and 9 (ASCII 57) (case sensitive)
2nd Alternative [1-9][0-9]
Match a single character present in the list below [1-9] 1-9 a single character in the range between 1 (ASCII 49) and 9 (ASCII 57) (case sensitive)
Match a single character present in the list below [0-9] 0-9 a single character in the range between 0 (ASCII 48) and 9 (ASCII 57) (case sensitive)
3rd Alternative 1[0-9]{2}
1 matches the character 1 literally (case sensitive)
Match a single character present in the list below [0-9]{2} {2} Quantifier — Matches exactly 2 times 0-9 a single character in the range between 0 (ASCII 48) and 9 (ASCII 57) (case sensitive)
4th Alternative 2[0-4][0-9]
2 matches the character 2 literally (case sensitive)
Match a single character present in the list below [0-4] 0-4 a single character in the range between 0 (ASCII 48) and 4 (ASCII 52) (case sensitive)
Match a single character present in the list below [0-9] 0-9 a single character in the range between 0 (ASCII 48) and 9 (ASCII 57) (case sensitive)
5th Alternative 25[0-5]
25 matches the characters 25 literally (case sensitive)
Match a single character present in the list below [0-5] 0-5 a single character in the range between 0 (ASCII 48) and 5 (ASCII 53) (case sensitive)
$ asserts position at the end of the string, or before the line terminator right at the end of the string (if any)
Global pattern flags g modifier: global. All matches (don’t return after first match)
HTTP Prompt is an interactive command-line HTTP client featuring autocomplete and syntax highlighting. Download url -> https://github.com/eliangcs/http-prompt – Joe C. Hecht – Google+
I’ve been using cURL but always had a feeling not to its potential basically because the cURL man page [WayBack] is both massive and lacks concrete useful practical examples.
For instance, I knew about the --header and --verbose options (I always use verbose names even though shorter -H and -v exist) to pass a specific header and get verbose output, but the man page basic examples like this by Tader:
The Wiert Corner - irregular stream of stuff 