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commands. The essential ftp command are: ls (see the files on the remote system), ASCII,
binary (set the file transfer mode to either text or binary, important that you select the proper
one ), get (copy a file from the remote system to the local system), mget (get many files at
once), put (copy a file from the local system to the remote system), mput (put many files at
once), bye (disconnect). For automation in a script, you may want to use ncftpput and
ncftpget, for example:
ncftpput -u my_user_name -p my_password -a remote.host.domain remote_dir
*local.html
minicom
Minicom program (looks like "Procomm for Linux").
File (de)compression
tar -zxvf filename.tar.gz
(=tape archiver) Untar a tarred and compressed tarball (*.tar.gz or *.tgz) that you downloaded
from the Internet.
tar -xvf filename.tar
Untar a tarred but uncompressed tarball (*.tar).
gunzip filename.gz
Decompress a zipped file (*.gz" or *.z). Use gzip (also zip or compress) if you wanted to
compress files to this file format.
bunzip2 filename.bz2
(=big unzip) Decompress a file (*.bz2) zipped with bzip2 compression utility. Used for big files.
unzip filename.zip
Decompress a file (*.zip) zipped with a compression utility compatible with PKZIP for DOS.
unarj e filename.arj
Extract the content of an *.arj archive.
uudecode -o outputfile filename
Decode a file encoded with uuencode. uu-encoded files are typically used for transfer of non-
text files in e-mail (uuencode transforms any file into an ASCII file).
7.4 Process control
ps
(=print status) Display the list of currently running processes with their process IDs (PID)
numbers. Use ps axu to see all processes currently running on your system (also those of other
users or without a controlling terminal), each with the name of the owner. Use "top" to keep
listing the processes currently running.
fg PID
Bring a background or stopped process to the foreground.
/jointfilesconvert/405621/bg PID
Send the process to the background. Opposite to fg. The same can be accomplished with
<Ctrl>z. If you have stopped jobs, you have to type
exit twice in row to log out.
any_command&
Run any command in the background (the symbol "&" means "run the proceeding command in
the background").
batch any_command
Run any command (usually one that is going to take more time) when the system load is low. I
can logout, and the process will keep running.
at 17:00
Execute a command at a specified time. You will be prompted for the command(s) to run, until
you press <Ctrl>d.
kill PID
Force a process shutdown. First determine the PID of the process to kill using ps.
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