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slackbook:basic_networking_utilities [2012/09/17 02:45 (UTC)]
mfillpot [ftp] Added original text and formatting
slackbook:basic_networking_utilities [2012/09/17 02:49 (UTC)] (current)
mfillpot [Sources] updated the author list
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 221 Goodbye. 221 Goodbye.
 </code> </code>
 +
 ==== ncftp ==== ==== ncftp ====
  
-ncftp(1) (pronounced nick-f-t-p), is a more feature rich successor to ftp, supporting tab completion and recursive retrieval. It automatically connects to a server as the anonymous user, unless you specify a different username on the commandline with the [-uargument. The primary advantage over ftp is the ability to send and retrieve multiple files at once with the "mput" and "mget" commands. If you pass the [-Rargument to either of them, they will recursively put or get data from directories.+**//ncftp//**(1) (pronounced nick-f-t-p), is a more 
 +feature rich successor to **//ftp//**, supporting 
 +tab completion and recursive retrieval. It automatically connects to a 
 +server as the anonymous user, unless you specify a different username 
 +on the commandline with the //-u// argument. The primary 
 +advantage over **//ftp//** is the ability to send 
 +and retrieve multiple files at once with the //"mput"// and //"mget"// 
 +commands. If you pass the //-R// argument to either of them, 
 +they will recursively put or get data from directories. 
  
 <code> <code>
 darkstar:~# ncftp ftp.osuosl.org darkstar:~# ncftp ftp.osuosl.org
-Logging in...                                                                   +Logging in... 
 Login successful. Login successful.
-Logged in to ftp.osuosl.org.                                                    +Logged in to ftp.osuosl.org.
 ncftp / > cd pub/slackware/slackware-current ncftp / > cd pub/slackware/slackware-current
 Directory successfully changed. Directory successfully changed.
 ncftp ...ware/slackware-current > mget -R isolinux ncftp ...ware/slackware-current > mget -R isolinux
-isolinux/README.TXT:                                     4.63 kB 16.77 kB/s   +isolinux/README.TXT: 4.63 kB 16.77 kB/s 
-isolinux/README_SPLIT.TXT:                             788.00 B    5.43 kB/s   +isolinux/README_SPLIT.TXT: 788.00 B5.43 kB/s 
-isolinux/f2.txt:                                       793.00 B    5.68 kB/s   +isolinux/f2.txt: 793.00 B5.68 kB/s 
-isolinux/initrd.img:                                    13.75 MB 837.91 kB/s   +isolinux/initrd.img:13.75 MB 837.91 kB/s 
-isolinux/iso.sort:                                      50.00 B  354.50 B/s    +isolinux/iso.sort:50.00 B354.50 B/s  
-isolinux/isolinux.bin:                                  14.00 kB 33.99 kB/s   +isolinux/isolinux.bin:14.00 kB 33.99 kB/s 
-isolinux/isolinux.cfg:                                 487.00 B    3.30 kB/s   +isolinux/isolinux.cfg: 487.00 B3.30 kB/s 
-isolinux/message.txt:                                  760.00 B    5.32 kB/s   +isolinux/message.txt:760.00 B5.32 kB/s 
-isolinux/setpkg:                                         2.76 kB 19.11 kB/s  +isolinux/setpkg: 2.76 kB 19.11 kB/s
 ncftp ...ware/slackware-current > bye ncftp ...ware/slackware-current > bye
 </code> </code>
- 
 ==== lftp ==== ==== lftp ====
  
-The last client we're going to look at is lftp(1). Like ncftp, it supports tab completion and recursive activity, but has a more friendly license. Rather than user "mget" and "mput", all recursive operations are handled with the "mirror" command. "mirror" has many different options available, so I'll have to refer you to the man page and the built-in "help" command for complete details.+The last client we're going to look at is 
 +**//lftp//**(1).Like 
 +**//ncftp//**, it supports tab completion and 
 +recursive activity, but has a more friendly license.Rather than user 
 +//"mget"// and //"mput"//, all recursive operations are handled with the 
 +//"mirror"// command.//"mirror"// has many different options available, so 
 +I'll have to refer you to the man page and the built-in //"help"// command 
 +for complete details. 
  
 <code> <code>
 darkstar:~# lftp ftp.osuosl.org darkstar:~# lftp ftp.osuosl.org
 lftp ftp.osuosl.org:~> cd /pub/slackware/slackware-current lftp ftp.osuosl.org:~> cd /pub/slackware/slackware-current
-cd ok, cwd=/pub/slackware/slackware-current            +cd ok, cwd=/pub/slackware/slackware-current
 lftp ftp.osuosl.org:/pub/slackware/slackware-current> mirror isolinux lftp ftp.osuosl.org:/pub/slackware/slackware-current> mirror isolinux
-Total: 2 directories, 16 files, 1 symlink                                      +Total: 2 directories, 16 files, 1 symlink
 New: 16 files, 1 symlink New: 16 files, 1 symlink
 14636789 bytes transferred in 20 seconds (703.7K/s) 14636789 bytes transferred in 20 seconds (703.7K/s)
 lftp ftp.osuosl.org:/pub/slackware/slackware-current> bye lftp ftp.osuosl.org:/pub/slackware/slackware-current> bye
 </code> </code>
- 
 ===== rsync ===== ===== rsync =====
  
-Ready to see something cool? Have you ever found yourself needing just a handful of files from a large directory, but you're not entirely sure which files you already have and which ones you need? You can download the entire directory again, but that's duplicating a lot of work. You can pick and chose, manually check everything, but that's very tedious. Perhaps you've downloaded a large file such as an ISO, but something went wrong with the download? It doesn't make sense that you should have to pull down the entire file again if only a few bits have been corrupted. Enter rsync(1), a fast and versatile copying tool for local and remote files.+Ready to see something cool? Have you ever found yourself needing just 
 +a handful of files from a large directory, but you're not entirely sure 
 +which files you already have and which ones you need? You can download 
 +the entire directory again, but that's duplicating a lot of work. You 
 +can pick and chose, manually check everything, but that's very tedious. 
 +Perhaps you've downloaded a large file such as an ISO, but something 
 +went wrong with the download? It doesn't make sense that you should 
 +have to pull down the entire file again if only a few bits have been 
 +corrupted.Enter **//rsync//**(1), a fast and 
 +versatile copying tool for local and remote files.
  
-rsync uses a handful of simple, but very effective techniques to determine what needs to be changed. By checking file size and time stamps, it can determine if two files are different. If something has changed, it can determine what bytes are different, and simply download that handfull of data rather than an entire file. It is truly a marvel of modern technology. 
  
-In its simplist form, rsync connects to an rsync protocol server and downloads a list of files and directories, along with their sizes, timestamps, and other information. It then compares this to the local files (if any) to determine what it needs to transfer. Only files that are different will be synced. Additionally, it breaks up large files into smaller chunks and compares those chunks using a quick and simple hash function. Any chunks that match are not transferred, so the amount of data that must be copied can be dramatically reduced. rsync also supports compression, verbose output, file deletion, permission handling, and many other options. For a complete list, you'll need to refer to the man page, but I've included a small table of some of the more common options.+**//rsync//** uses a handful of simple, but very 
 +effective techniques to determine what needs to be changed. By checking 
 +file size and time stamps, it can determine if two files are different. 
 +If something has changed, it can determine what bytes are different, 
 +and simply download that handfull of data rather than an entire file. 
 +It is truly a marvel of modern technology. 
 + 
 + 
 +In its simplist form, **//rsync//** connects to an 
 +rsync protocol server and downloads a list of files and directories, 
 +along with their sizes, timestamps, and other information. It then 
 +compares this to the local files (if any) to determine what it needs to 
 +transfer. Only files that are different will be synced.Additionally, 
 +it breaks up large files into smaller chunks and compares those chunks 
 +using a quick and simple hash function. Any chunks that match are not 
 +transferred, so the amount of data that must be copied can be 
 +dramatically reduced.**//rsync//** also supports 
 +compression, verbose output, file deletion, permission handling, and 
 +many other options. For a complete list, you'll need to refer to the 
 +man page, but I've included a small table of some of the more common 
 +options.
  
 **Table 16.1. rsync Arguments** **Table 16.1. rsync Arguments**
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 |-z |Compress - handy for slow network connections| |-z |Compress - handy for slow network connections|
  
-Due to the power and versatility of rsync, it can be invoked in a number of ways. The following two examples connect to an rsync protocol server to retrieve some information and to another server via ssh to encrypt the transmission.+Due to the power and versatility of **//rsync//**, 
 +it can be invoked in a number of ways.The following two examples 
 +connect to an rsync protocol server to retrieve some information and to 
 +another server via ssh to encrypt the transmission. 
  
 <code> <code>
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 darkstar:~# rsync -e ssh ftp.slackware.com:/home/alan/foo /tmp/foo darkstar:~# rsync -e ssh ftp.slackware.com:/home/alan/foo /tmp/foo
 </code> </code>
- 
 ====== Chapter Navigation ====== ====== Chapter Navigation ======
  
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 ====== Sources ====== ====== Sources ======
 <!-- If you copy information from another source, then specify that source --> <!-- If you copy information from another source, then specify that source -->
-  * Original source: [[http://www.slackbook.org/beta]] +  * Original source: [[http://www.slackbook.org/beta]] \\
 <!-- Authors are allowed to give credit to themselves! --> <!-- Authors are allowed to give credit to themselves! -->
-<!-- * Originally written by [[wiki:user:xxx | User X]] -->+  * Originally written by Alan Hicks, Chris Lumens, David Cantrell, Logan Johnson
 <!-- * Contrbutions by [[wiki:user:yyy | User Y]] --> <!-- * Contrbutions by [[wiki:user:yyy | User Y]] -->
  

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