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Full Discussion: How can I apply 'date' command to specific columns, in a BASH script?
Top Forums Shell Programming and Scripting How can I apply 'date' command to specific columns, in a BASH script? Post 303018762 by RudiC on Thursday 14th of June 2018 12:36:00 PM
Old 06-14-2018
You wanted to use the date command ... try
Code:
grep -Eo "[A-Z][a-z]* [0-9]{1,2} [0-9]{4}" /tmp/sample.txt |
LC_ALL=C date -f- +"%B %-d %Y:%F" |
awk '
NR == FNR       {T[$1] = $2
                 next
                }
FNR > 1         {$3 = T[$3]
                 $5 = T[$5]
                }
1
' FS=: - FS=, OFS=, /tmp/sample.txt

This User Gave Thanks to RudiC For This Post:
richardsantink
 

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LEARN ABOUT V7

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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