Tag Archives: Bash Script

Sharding Environment Setupa Sharding Group Members : For sharding there are three players. Config ServerReplica SetsMongos For a mongo shard we need to setup the above three servers. Config Server …

Editing Shortcuts Shortcut DescriptionCtrl + a —> move to the beginning of the lineCtrl + e —> move to the end of the lineCtrl + k —> Kill the text …

Whitespace When Assigning Variables Whitespace matters when assigning variables. foo = ‘bar’ # incorrect foo= ‘bar’ # incorrect foo=’bar’ # correct The first two will result in syntax errors (or …

The Publish/Subscribe (Pub/Sub) Pattern When a Bash project turns into a library, it can become difficult to add new functionality. Function names, variables and parameters usually need to be changed …

Option Description-j n-k Keep same order-XMultiple arguments with context replace–colsep regexpSplit input on regexp for positional replacements{} {.} {/} {/.} {#} Replacement strings{3} {3.} {3/} {3/.} Positional replacement strings-S sshlogin …

Bash is often commonly used in the management and maintenance of servers and clusters. Information pertaining to typical commands used by network operations, when to use which command for which …

First and foremost: know what you’re doing! Secondly, while you should avoid using eval, if its use makes for cleaner code, go ahead. Using Eval For example, consider the following …

Select keyword can be used for getting input argument in a menu format. Select keyword can be used for getting input argument in a menu format Suppose you want the …

Request Method: GET It is quite easy to call a CGI-Script via GET.First you will need the encoded url of the script. Then you add a question mark ? followed …

Option Description-b LIST, –bytes=LISTPrint the bytes listed in the LIST parameter-c LIST, –characters=LISTLIST Print characters in positions specified in LIST parameter-f LIST, –fields=LISTPrint fields or columns-d DELIMITERUsed to separate columns …