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Oct 26

readline wrapper

Posted By: Taoufix
68 views
Linux, Old Blog

Some unix tools (MaxDB’s dbmcli for example) don’t have a readline support. It’s quiet annoying when you want to correct a misspelled word.

You can use rlwrap as a work around for this problem.

$ rlwrap command
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Oct 25

Notifications using ssh and dbus-python

Posted By: Taoufix
84 views
Howtos, Linux, Old Blog
  • first make sure dbus-python is installed on the remote host.
  • download the mesg.sh script:
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    #!/bin/bash
 
if (($# < 2));then
  echo "Usage: ${0##*/} dest text [text ...]" >> /dev/stderr
  exit 1
fi
dest=$1;;
shift
 
ssh ${dest} "DISPLAY=:0 python" &lt;<eof>
import dbus
no = dbus.SessionBus().get_object('org.freedesktop.Notifications',
                                '/org/freedesktop/Notifications')
ni = dbus.Interface(no, 'org.freedesktop.Notifications')
ni.Notify("python", 0, '', "${USER} says:", "$@", {}, {}, 0)
EOF
</eof>
  • make it executable:
    • $ mv mesg.sh.txt mesg.sh; chmod 755 mesg.sh
  • to send a message to a user at a remote desktop:
    • $ ./mesg.sh user@host "Are you ready for lunch ?"
  • You can also use html-like syntax to send URLs:
    • $ ./mesg.sh shikamaru@host '&lt;a href=\"http://www.dattebayo.com/t/ns031.torrent\"&gt;Naruto Shippuuden 031&lt;/a&gt; is out'
  • he will receive the following notification:

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    Oct 24

    Mount remote directories with ssh

    Posted By: Taoufix
    62 views
    Linux, Old Blog
  • Install sshfs-fuse and make sure fuse is loaded:
    • $ lsmod | grep fuse || sudo modprobe -v fuse
  • mount the remote dir:
    • $ sshfs user@host:/path/to/dir ./dir_at_host/
  • to umount it:
    • $ fusermount -u ./dir_at_host/
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    Oct 23

    rsync over ssh

    Posted By: Fahdos
    63 views
    Old Blog 
    $ rsync –progress -avz -e ssh user@host:data/ ./data/
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    Oct 09

    Sudo & Multiple command line

    Posted By: Fahdos
    60 views
    Old Blog
  • problem:
    • $ sudo 'for i in 1 2; do echo $i; done'sudo: for i in 1 2; do echo $i; done: command not found

  • solution:
    • $ sudo bash -c 'for i in 1 2; do echo $i; done'12
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