| curl [options] [URL] | |
| Transfer a URL. Very powerful command to transfer data from or to a server, using one of the protocols HTTP, HTTPS, FTP, FTPS, GOPHER, DICT, TELNET, LDAP or FILE. The URL syntax is protocol dependent. Does have large file support ( 2GB) and can continue after breaks. Many options deal with authentication. Useful other options are: -C - Continue a previous (interrupted) file transfer -F name=content Emulate a filled in HTML form with pressed submit button -h Display usage information -m seconds Timeout after given number of seconds -o file Write output to file instead of STDOUT. -O Write output to file using remote name as file name -R Make the local timestamp identical to the remote one -u user:passwd user and password to use for server authentication --limit-rate speed? Specify the maximum transfer rate in bytes/s. | |
| elinks [-help] [options] [URL] | |
| Free text-based console web browser. Is more flexible than lynx but not installed on DESY SL6 systems. Instead of giving options the user interface or a config file can be used. The elinks command is useful to convert html to plain text: elinks -dump -no-references -no-numbering htmlfile > textfile | |
| firefox | |
| Browser for the World Wide Web (comes with (Net)News and Mail reader). | |
| ftp [-pgv] [host] | |
| Internet file transfer program. Allows to transfer files to and from a remote network site. Should be used for anonymous ftp only, as passwords are sent in clear text. Some useful options are -p to use passive ftp, -g to disable file name globbing and -v to show responses from the remote host and to report on data transfer statistics. Use scp or the features of AFS where possible. See also lftp. | |
| host [-a] name [server] | |
| DNS lookup utility. Converts names to IP addresses and vice versa. -a Query all data available for name (ANY request) -t type Select the query type (e.g. CNAME, NS, MX) -v Verbose output | |
| lftp [-e command[s]] [-u user[,passwd]] [host] | |
| lftp -f file | |
| lftp -c command[s] | |
| Sophisticated file transfer program for [s]ftp and http[s]. Can download whole directory trees, can do its job in the background and postpone downloads. Comes with shell-like syntax and command history. Does execute (-e) command[s] on startup, does execute (-c) commands and exit or execute commands from file and exit. | |
| lynx [-help] [options] [URL] | |
| Fast World Wide Web browser for ASCII terminals (no graphics). A quick way to convert html to plain text is the sample command line lynx -dump -nolist -force_html htmlfile > textfile | |
| nslookup hostname | |
| Query Internet name servers. Use the simple form to translate hostnames into IP addresses and vice versa. See also the host command. | |
| ping hostname | |
| Send ICMP ECHO_REQUEST packets to network hosts. Used to see if a remote host is reachable. In case of continuous display abort after few seconds with CTRL-C. Report observed network problems to the experts. | |
| w3m [-h] [options] [URL] | FP |
| A text based Web browser and pager. Well suited to display tables and frames. Can be used as a pager like less. Use w3m -h to display all options. Is not installed on DESY SL6 systems. To convert html to text the following command can be used: w3m -dump -T text/html htmlfile > textfile | |
| wget [-h] [-ckmr] [-l depth] [URL[s]] | P |
| It has a huge number of options (see wget -h) to influence the download. To retrieve a hierarchy of pages the options -r and -l depth are useful. Further important options: -m - mirroring, -k convert links to make pages viewable, -c continue partial downloads. |