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ssh root@dest tcpdump -U -s0 -w - 'tcp port 389' | wireshark -k -i -

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python -m SimpleHTTPServer 80

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awk '(NR%20==0)' data.txt

NF The number of fields in the current input record.
NR The total number of input records seen so far.

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d = {'site1': {'servername': 'test.org', 'serveralias': 'www.test.org'}}

for key, value in d.iteritems():
    print key
    print value['servername']

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Private key : openssl genrsa -out ssl.key 1024
Certificate : openssl req -new -x509 -days 3650 -key ssl.key -out ssl.crt 
Verification : openssl x509 -in ssl.crt -text -noout

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find -name 'IMG*.JPG' | while read PIC; do DATE=$(exiftool -p '$DateTimeOriginal' $PIC |
sed 's/[: ]//g'); touch - t $(echo $DATE | sed 's/\(..$\)/\.\1/') $PIC;echo "Date:" $DATE "- " $PIC; mv -i $PIC $(dirname $PIC)/`date +%Y%m%d_%T`_$DATE.jpg; done

Renommer : 
exit2 -t *.jpg
exiv2 -r Description_%Y%m%d_%H%M%S *.jpg

Ajouter copyright
exiftool -copyright="John Doe" *.jpg

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/etc/apt/apt.conf.d/50tmp

APT
{
  ExtractTemplates
  {
	TempDir "/var/tmp";
  };
};

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Host *
        ForwardAgent yes
        # With Windows DC as DNS --> no
        GSSAPIAuthentication no
        AddressFamily inet
        IdentityFile ~/.ssh/id_rsa
        SendEnv LANG LC_*
        HashKnownHosts yes
        GSSAPIDelegateCredentials no
        EscapeChar ~

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defaults write com.apple.screencapture location /Full/Path/To/Folder

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In /etc/apt/apt.conf

APT::Install-Recommends "0";