# Import a public key
gpg --import <public_key>.asc

# Verify a signature
gpg --verify <file_name>.asc

# To surpress the warning, trust public keys
#  shows the long identifier of the public key
gpg --with-colons --list-keys "<public_key>"
#  trusts it
gpg --trusted-key 0123456789ABCDEF --update-trustdb

bash

1

Verify signatures

# Import a public key
gpg --import <public_key>.asc

# Verify a signature
gpg --verify <file_name>.asc

# To surpress the warning, trust public keys
#  shows the long identifier of the public key
gpg --with-colons --list-keys "<public_key>"
#  trusts it
gpg --trusted-key 0123456789ABCDEF --update-trustdb

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• bash, 
• gpg

REM CMD must be started as Administrator
MKLINK L:\ink\nam.e T:\ar\ge.t

bat

1

Windows Soft-link

REM CMD must be started as Administrator
MKLINK L:\ink\nam.e T:\ar\ge.t

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• cmd

mdkir /mnt/<Mount_point>
sudo mount -t vboxsf <Folder_name> /mnt/<Mount_point>

# To mount a VirtualBox shared folder in Linux at boottime add following
# line to /etc/fstab (tested in Ubuntu 10.04)
<Folder_name> /mnt/<Mount_point> vboxsf defaults 0 0

bash

1

mount VirtualBox shared folder in linux guest

mdkir /mnt/<Mount_point>
sudo mount -t vboxsf <Folder_name> /mnt/<Mount_point>

# To mount a VirtualBox shared folder in Linux at boottime add following
# line to /etc/fstab (tested in Ubuntu 10.04)
<Folder_name> /mnt/<Mount_point> vboxsf defaults 0 0

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• bash, 
• fstab, 
• vbox

sudo ifconfig tun0 mtu 1356

bash

1

vpnc fix

sudo ifconfig tun0 mtu 1356

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• bash, 
• vpnc

# create wpa_supplicant configuration file
cp /etc/wpa_supplicant.conf /etc/wpa_supplicant.conf.original
wpa_passphrase MY-NETWORK "w1r3l355 p455w0rd" # check output
wpa_passphrase MY-NETWORK "w1r3l355 p455w0rd" > /etc/wpa_supplicant.conf

# connect via wpa_supplicant
ifconfig wlan0 up
iwconfig wlan0 essid "MY-NETWORK"
wpa_supplicant -B -Dwext -iwlan0 -c/etc/wpa_supplicant.conf
dhcpcd wlan0

bash

1

Connect via wpa_supplicant

# create wpa_supplicant configuration file
cp /etc/wpa_supplicant.conf /etc/wpa_supplicant.conf.original
wpa_passphrase MY-NETWORK "w1r3l355 p455w0rd" # check output
wpa_passphrase MY-NETWORK "w1r3l355 p455w0rd" > /etc/wpa_supplicant.conf

# connect via wpa_supplicant
ifconfig wlan0 up
iwconfig wlan0 essid "MY-NETWORK"
wpa_supplicant -B -Dwext -iwlan0 -c/etc/wpa_supplicant.conf
dhcpcd wlan0

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• bash, 
• wlan, 
• wpa_supplicant

ssh-agent bash
ssh-add

bash

1

ssh-agent

ssh-agent bash
ssh-add

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• bash, 
• ssh, 
• ssh-agent

tar cvzf filename.tar.gz file.jpg # packe 'file.jpg' in 'filename.tar.gz'
tar cvzf filename.tar.gz folder/  # packe 'folder/*' in 'filename.tar.gz'
tar xvzf filename.tar.gz          # entpackee 'filename.tar.gz'

bash

1

tar Befehl

tar cvzf filename.tar.gz file.jpg # packe 'file.jpg' in 'filename.tar.gz'
tar cvzf filename.tar.gz folder/  # packe 'folder/*' in 'filename.tar.gz'
tar xvzf filename.tar.gz          # entpackee 'filename.tar.gz'

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• bash, 
• tar

# run 'git-archive.sh' on server
scp -r -P 1234 user@192.168.0.1:~/git/*.tar.gz /g/git

bash

1

gits from server backup per ssh

# run 'git-archive.sh' on server
scp -r -P 1234 user@192.168.0.1:~/git/*.tar.gz /g/git

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• bash, 
• git, 
• ssh

# === Windows ===
# Menu:
Systemsteuerung > System > Erweiterte Systemeinstellungen > Umgebungsvariablen
# Print:
echo %PATH%
# Print all:
set
# Important: %PATH%, %USERPROFILE%

# === Linux ===
# Print:
echo $PATH
# Print all:
env
# Change (Bash):
export PATH=$PATH:$HOME/bin

bash

1

Environment variables

# === Windows ===
# Menu:
Systemsteuerung > System > Erweiterte Systemeinstellungen > Umgebungsvariablen
# Print:
echo %PATH%
# Print all:
set
# Important: %PATH%, %USERPROFILE%

# === Linux ===
# Print:
echo $PATH
# Print all:
env
# Change (Bash):
export PATH=$PATH:$HOME/bin

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• env

git init
git remote add origin <path_to_repo>
echo -e "[branch \"master\"]\n\tremote = origin\n\tmerge = refs/heads/master" >> .git/config
git pull

bash

1

Include Git repo in existing folder (e.g. C:\Users-repo)

git init
git remote add origin <path_to_repo>
echo -e "[branch \"master\"]\n\tremote = origin\n\tmerge = refs/heads/master" >> .git/config
git pull

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• git

git checkout --track origin/<branch>

bash

1

tracking branch

git checkout --track origin/<branch>

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• bash, 
• git

xrandr -o right
xsetwacom set stylus xydefault
xsetwacom set stylus Rotate 1

bash

1

rotate dsiplay on tablet

xrandr -o right
xsetwacom set stylus xydefault
xsetwacom set stylus Rotate 1

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• bash, 
• wacom, 
• xrandr

git checkout master
git fetch <remote>
git merge <remote>/master

bash

1

Remote "pull"

git checkout master
git fetch <remote>
git merge <remote>/master

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• bash, 
• git

git tag -a 20090101 -m "Update on 2009-01-01"
git tag -a v0.1 -m "Version 0.1"

# push
git push origin v0.1

bash

1

annotated git tag

git tag -a 20090101 -m "Update on 2009-01-01"
git tag -a v0.1 -m "Version 0.1"

# push
git push origin v0.1

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• bash, 
• git

cd /e/language/Project/src
git init
vim .gitignore      # *.pyc, *~
git add .gitignore  # ...
git commit -m "Initial commit"

cd ../..            # /e/language
git clone --bare Project/src project.git
scp -r -P 1234 project.git user@192.168.0.1:~/git
# delete 'Project' in Eclipse
git clone ssh://user@192.168.0.1:1234/~/git/project.git project/src
# recreate 'project' in Eclipse

bash

1

how to create a git repo on a server under msysgit on windows

cd /e/language/Project/src
git init
vim .gitignore      # *.pyc, *~
git add .gitignore  # ...
git commit -m "Initial commit"

cd ../..            # /e/language
git clone --bare Project/src project.git
scp -r -P 1234 project.git user@192.168.0.1:~/git
# delete 'Project' in Eclipse
git clone ssh://user@192.168.0.1:1234/~/git/project.git project/src
# recreate 'project' in Eclipse

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• bash, 
• git, 
• ssh

ssh -p 1234 user@192.168.0.1

bash

1

ssh login auf port 1234 als user auf rechner 192.168.0.1

ssh -p 1234 user@192.168.0.1

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• bash, 
• ssh

ln -s /folder/or/file/to/point.at /path/to/where/the/link/shall.be

bash

1

Soft Link

ln -s /folder/or/file/to/point.at /path/to/where/the/link/shall.be

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• bash

sudo dhcpcd -k wlan0 dhcpcd -nd wlan0

bash

1

request new IP from dhcp

sudo dhcpcd -k wlan0 dhcpcd -nd wlan0

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• bash, 
• dhcp

ps -ax |grep firefox

bash

1

Prozess suche Firefox

ps -ax |grep firefox

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• bash

chmod +x ~/bla/bla.pl

bash

1

Skrip Ausführbar machen

chmod +x ~/bla/bla.pl

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• bash