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HDFS Command Syntax Overview: hadoop fs : Ex.: hadoop fs -ls hadoop version : check hadoop installed properly HELP: help [cmd]: hopefully this is self-describing Inspect files: ls/lsr : list all files in cat : print on stdout tail [-f] : output the last part of the test : return attributes of file […] Public and private keys from a Java Key Store Step 1: Creating the “public-private” key-pair. keytool -genkey -alias client -validity 365 -keystore keystore.jks Step 2: Validate the “public-private” key pair. keytool -list -v -keystore keystore.jks Step 3: Extract the “public key” from the “public-private” keytool -export -alias client -keystore keystore.jks -rfc -file public.cert Step […] Technically at the moment there isn’t anything really wrong with the SHA-1 hash function, but it is now quite old and is starting to show potential cracks. Hence the reason that the security industry is advising to move to something better. In this case SHA-256. 1. Generate a SSL Key File Firstly you will need […] OpenSSL Commands After you applied for a personal or a host certificate, you may need to export the bundle from your browser and convert them into a different format to be able to use them in tools like GSI-SSH in order to authenticate yourself to the grid, and also to be able to install your […] |
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