fix(post): parallel shells

Author: SyntaxRules

_posts/2017-1-3-parallel-shell.md

@@ -10,6 +10,7 @@ tags: hpc software utilities
 
 
 There are 3 popular ways to perform parallel actions on HPC clusters:
+
 - Using a shell script
 - Using Pdsh
 - Using ClusterShell
@@ -22,6 +23,7 @@ Before we dive into these 3 methods, its important to note that you should have
 This method can be done with any scripting language, but I'll use bash.
 
 Create a script that you want ran:
+
 ```
 #!/bin/bash
 
@@ -43,6 +45,7 @@ And run it with `sh your-script.sh`. This will run your command on all nodes, on
 > [Pdsh Github](https://github.com/grondo/pdsh)
 
 Using pdsh is simple enough:
+
 ```
 # perform th uptime command on node1, node2, node3 and node 4
 $ pdsh -w node[1-4] uptime
@@ -56,16 +59,23 @@ node4: 19:20:45 up 1 day, 19:19,  1 user,  load average: 0.29, 0.57, 0.53
 ## Using ClusterShell
 
 ClusterShell is built and maintained by CEA-HPC and claims to be effective on supercomputers with 5,000 compute nodes. Using ClusterShell is very similar to pdsh
+
 ```
 $ clush -w foo[1-5] echo "Hello World"
 ```
+
 ClusterShell does some merging of outputs and does a better job of handling hanging nodes than pdsh.
 
 ## References
 
 [Bash for loop Syntax](https://www.cyberciti.biz/faq/bash-for-loop/)
+
 [Pdsh github](https://github.com/grondo/pdsh)
+
 [Pdsh man page](https://linux.die.net/man/1/pdsh)
+
 [Pdsh vs ClusterShell](https://github.com/cea-hpc/clustershell/wiki/Pdsh)
+
 [ClusterShell Github](https://github.com/cea-hpc/clustershell)
+
 [ClusterShell main page](http://cea-hpc.github.io/clustershell/)