Linux tipps

Configure spam filter (spam assassin)

It is assumed that spamassassin and procmail are installed.
  • create directory ~/.procmail (for log files)

  • create file ~/mail/SPAM (for the spam)

  • file ~/.procmailrc: (here just a standard rule for span, other filter rules analogous)


    :0fw: spamassassin.lock
    * < 256000
    | /usr/local/bin/spamassassin

    * ^X-Spam-Status: Yes

  • teach spamassassin what is spam und what not:

    sa-learn --mbox --spam < spam folder >
    sa-learn --mbox --ham < non-spam folder >

  • do further configurations in ~/.spamassassin/user_prefs:

    required_score 3 | determine what is labeled spam (the higher, the less likely an email is to be spam)
    whilelist_from/blacklist_from < email > | allow filtering of single domains
Open attachments in pine
  • config-menu

    enable-msg-view-attachments: open attachments directly in message (not via v)
    show-plain-text-internally: show text-attachments directly in pine
    mimetype-search-path: path for .mime-types (s. below)
    mailcap-search-path: path for .mailcap (s. below)

  • configure .mime-types - set file types:

    video/mpeg                         mpeg mpg mpe
    text/html                             html htm
    image/gif                            gif
    image/jpeg                          jpeg jpg jpe
    application/pdf                   pdf
    application/postscript       ps

  • configure .mailcap - set application to open files with

    application/pdf;                   xpdf -geometry 700x800 %s
    application/postscript;       gv %s
    text/html;                             /usr/bin/lynx -use_mouse -force_html %s
    image/gif;                            xv %s
    video/mpeg;                        plaympeg %s

More information here:
login per ssh without using password
  • generate public/private key pair:

    ssh-keygen -t rsa
    Enter file in which to save the key (/home/a/.ssh/id_rsa):
    Enter passphrase (empty for no passphrase): empty
    Enter same passphrase again: empty

  • create .ssh directory on remote computer (if necessary)

  • append public key to remote .ssh directory:

    cat .ssh/ | ssh user@remoteComputer 'cat >> .ssh/authorized_keys'
see size of files in directory (like kdirstat)

Konqueror -> View -> View mode -> File size view