Aho Weinberger Kernighan - Revision history

Xbl: /* Use */

2023-08-21T11:43:06Z

Use

← Older revision		Revision as of 13:43, 21 August 2023
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	<code>who \| awk '{print $NF}'</code> print the last field (NF=Number of Fields) of every line from the who command</br>		<code>who \| awk '{print $NF}'</code> print the last field (NF=Number of Fields) of every line from the who command</br>
	</br>		</br>
	<code>date \| awk 'OFS="-" {print$2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '-'</br>		<code>date \| awk 'OFS="-" {print $2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '-'</br>
	<code>date \| awk 'OFS="/" {print$2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '/'</br>		<code>date \| awk 'OFS="/" {print $2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '/'</br>
	</br>		</br>
	<code> awk 'BEGIN {print "yoloooo"} {print $0} END {print "swaaag"}' test.sh</code> 'BEGIN' prints "yoloooo" before any text processing, 'END' prints "swaaag" after text processing</br>		<code> awk 'BEGIN {print "yoloooo"} {print $0} END {print "swaaag"}' test.sh</code> 'BEGIN' prints "yoloooo" before any text processing, 'END' prints "swaaag" after text processing</br>

Xbl at 11:42, 21 August 2023

2023-08-21T11:42:26Z

← Older revision		Revision as of 13:42, 21 August 2023
Line 8:		Line 8:
	<code>who \| awk '{print $NF}'</code> print the last field (NF=Number of Fields) of every line from the who command</br>		<code>who \| awk '{print $NF}'</code> print the last field (NF=Number of Fields) of every line from the who command</br>
	</br>		</br>
	<code>date \| awk 'OFS="-" {print$2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '-'		<code>date \| awk 'OFS="-" {print$2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '-'</br>
	<code>date \| awk 'OFS="/" {print$2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '/'		<code>date \| awk 'OFS="/" {print$2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '/'</br>
	</br>		</br>
	<code> awk 'BEGIN {print "yoloooo"} {print $0} END {print "swaaag"}' test.sh</code> 'BEGIN' prints "yoloooo" before any text processing, 'END' prints "swaaag" after text processing		<code> awk 'BEGIN {print "yoloooo"} {print $0} END {print "swaaag"}' test.sh</code> 'BEGIN' prints "yoloooo" before any text processing, 'END' prints "swaaag" after text processing</br>
	</br>		</br>
	<code>awk -F: '$3 >= 1000 {print $1,$6}' /etc/passwd</code> print field 1 and 6 from /etc/passwd where field 3 is greater than 1000		<code>awk -F: '$3 >= 1000 {print $1,$6}' /etc/passwd</code> print field 1 and 6 from /etc/passwd where field 3 is greater than 1000</br>

	== Useful Flags ==		== Useful Flags ==
	<code>-F:</code> define field delimiter as ':'</br>		<code>-F:</code> define field delimiter as ':'</br>

Xbl: Created page with "= awk = is a full scripting language, as well as a complete text manipulation toolkit for the command line.
== Use == `who | awk '{print $1}'` print the first field of every line from the who command
`who | awk '{print $1,$4}'` print the first and fourth field of every line from the who command
`who | awk '{print $NF}'` print the last field (NF=Number of Fields) of every line from the who command

`date | a..."`


2023-08-21T11:26:23Z
Created page with "= awk =  is a full scripting language, as well as a complete text manipulation toolkit for the command line.</br>  == Use == <code>who | awk '{print $1}'</code> print the first field of every line from the who command</br> <code>who | awk '{print $1,$4}'</code> print the first and fourth field of every line from the who command</br> <code>who | awk '{print $NF}'</code> print the last field (NF=Number of Fields) of every line from the who command</br> </br> <code>date | a..."
New page
= awk =



is a full scripting language, as well as a complete text manipulation toolkit for the command line.</br>



== Use ==

<code>who | awk '{print $1}'</code> print the first field of every line from the who command</br>

<code>who | awk '{print $1,$4}'</code> print the first and fourth field of every line from the who command</br>

<code>who | awk '{print $NF}'</code> print the last field (NF=Number of Fields) of every line from the who command</br>

</br>

<code>date | awk 'OFS="-" {print$2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '-'

<code>date | awk 'OFS="/" {print$2,$3,$6}'</code> print the date fields 2, 3 and 6 using the OFS (Output Field Seperator) '/'

</br>

<code> awk 'BEGIN {print "yoloooo"} {print $0} END {print "swaaag"}' test.sh</code> 'BEGIN' prints "yoloooo" before any text processing, 'END' prints "swaaag" after text processing

</br>

<code>awk -F: '$3 >= 1000 {print $1,$6}' /etc/passwd</code> print field 1 and 6 from /etc/passwd where field 3 is greater than 1000



== Useful Flags ==

<code>-F:</code> define field delimiter as ':'</br>