Difference between revisions of "Linux"
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| − | + | == Run on multi-procs == | |
<code> | <code> | ||
| Line 7: | Line 7: | ||
<code> | <code> | ||
mpirun -np 12 main <log & | mpirun -np 12 main <log & | ||
| + | </code> | ||
| + | |||
| + | == Manage your .bashrc == | ||
| + | |||
| + | <code> | ||
| + | export | ||
| + | </code> | ||
| + | |||
| + | <code> | ||
| + | alias | ||
| + | </code> | ||
| + | |||
| + | Do not forget to source your .bashrc file. This is done automatically when opening a new terminal. | ||
| + | |||
| + | <code> | ||
| + | source .bashrc | ||
| + | </code> | ||
| + | |||
| + | == SSH keys == | ||
| + | |||
| + | You should first go to your personal repository and generate a new key if there is no <code>id_dsa.pub</code> file in the <code>.ssh</code> directory. | ||
| + | |||
| + | <code> | ||
| + | cd | ||
| + | ssh-keygen -t dsa | ||
| + | </code> | ||
| + | |||
| + | You should get the following message, | ||
| + | |||
| + | <code> | ||
| + | Generating public/private dsa key pair | ||
| + | Enter file in which to save the key (/home/login/.ssh/id_dsa): | ||
| + | </code> | ||
| + | |||
| + | Just press enter. You must then copy the public key that you will find in <code>.ssh/id_dsa.pub</code> to the file <code>.ssh/authorized_keys</code> of the distant host you want to give access to. This public key should have the following format. | ||
| + | |||
| + | <code> | ||
| + | ssh-dss AAAAB3NzaC................................................................................. login@machine | ||
| + | </code> | ||
| + | |||
| + | |||
| + | |||
| + | == Convert Images == | ||
| + | |||
| + | <code> | ||
| + | convert *.png video.gif | ||
| + | </code> | ||
| + | |||
| + | |||
| + | Make sure to specify the correct dimension for the image (here 840x1188). -160 means the image is to remove 160 units from the right part of the image. (+160 for the left part). -600 means the reduction will be of 600 units from the bottom of the image. | ||
| + | |||
| + | <code> | ||
| + | convert 000.png -crop 840x1188-160-600 000_crop.png | ||
</code> | </code> | ||
Latest revision as of 16:07, 16 March 2016
Run on multi-procs
mpirun -np 12 main
mpirun -np 12 main <log &
Manage your .bashrc
export
alias
Do not forget to source your .bashrc file. This is done automatically when opening a new terminal.
source .bashrc
SSH keys
You should first go to your personal repository and generate a new key if there is no id_dsa.pub file in the .ssh directory.
cd ssh-keygen -t dsa
You should get the following message,
Generating public/private dsa key pair Enter file in which to save the key (/home/login/.ssh/id_dsa):
Just press enter. You must then copy the public key that you will find in .ssh/id_dsa.pub to the file .ssh/authorized_keys of the distant host you want to give access to. This public key should have the following format.
ssh-dss AAAAB3NzaC................................................................................. login@machine
Convert Images
convert *.png video.gif
Make sure to specify the correct dimension for the image (here 840x1188). -160 means the image is to remove 160 units from the right part of the image. (+160 for the left part). -600 means the reduction will be of 600 units from the bottom of the image.
convert 000.png -crop 840x1188-160-600 000_crop.png
