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Get Futurama quotations from slashdot.org servers

Get AWS temporary credentials ready to export based on a MFA virtual appliance
You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

List all PostgreSQL databases. Useful when doing backups

Rename file to same name plus datestamp of last modification.
FILENAME=nohup.out mv -iv $FILENAME{,.$(stat -c %Y $FILENAME)} does it help ?

Copy files for backup storage
Backup a whole directory copying only updated files.

Remove a line in a text file. Useful to fix
In this case it's better do to use the dedicated tool

bash or tcsh redirect both to stdout and to a file
When plumbers use pipes, they sometimes need a T-joint. The Unix equivalent to this is 'tee'. The -a flag tells 'tee' to append to the file, rather than clobbering it. Tested on bash and tcsh.

Mac OS X: Change Color of the ls Command
I use terminal with black background on the Mac. Unfortunately, the default ls color for the directory is blue, which is very hard to see. By including the line above in my ~/.bash_profile file, I changed the directory's color to cyan, which is easer to see. For more information on the syntax of the LSCOLORS shell variable: $ man ls I tested this command on Mac OS X Leopard

Make ls output better visible on dark terminals in bash
Sometimes you have a situation where you cannot properly see the ls output when you are using a terminal w/a dark background. Usually bash has ls aliased to use colors, and you can easily get ls to use the default foreground color via simply unaliasing the command.

Create a mirror of a local folder, on a remote server
Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)


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