Parallel

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 …

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Networking With Bash

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 …

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When to use eval

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 …

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Select keyword

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 …

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CGI Scripts

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 …

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Cut Command

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 …

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The Cut Command

ParameterDetails-f, –fieldsField-based selection-d, –delimiterDelimiter for field-based selection-c, –charactersCharacter-based selection, delimiter ignored or error-s, –only-delimitedSuppress lines with no delimiter characters (printed as-is otherwise)–complementInverted selection (extract all except specified fields/characters–output-delimiterSpecify when it …

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EscapeDetails\aA bell character.\dThe date, in “Weekday Month Date” format (e.g., “Tue May 26”).\D{FORMAT}The FORMAT is passed to `strftime'(3) and the result is inserted into the prompt string; an empty FORMAT …

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