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# 1  
Old 03-10-2011
use of sed
hi i am trying to update paremeter with date and timestamp..
my source file is like this Taxpr_Param.txt :
Code:
[s_m_TAXPR_AGG_F_DRILL_INC_5_5]
$$LOAD_DATE=03/09/2011  04:01:51
[s_m_TAXPR_AGG_F_MAIN_INC_5_5]
$$LOAD_DATE=03/09/2011  04:01:51

terget like this new_file:
Code:
[s_m_TAXPR_AGG_F_DRILL_INC_5_5]
$$LOAD_DATE=03/10/2011      06:31:37
[s_m_TAXPR_AGG_F_MAIN_INC_5_5]
$$LOAD_DATE=03/10/2011      06:31:37

my script is :
Code:
chmod 777 Taxpr_Param.txt
s_val=`date '+%m/%d/%Y%t%H:%M:%S'`
q=`cat Taxpr_Param.txt |grep "LOAD_DATE="|head -1`
time_val=`echo $q|awk -F"=" '{print $2}'`
sed "s@'$time_val'@'$s_val'@"g Taxpr_Param.txt > new_file

this is not working properly.
so please help me..

thank you in advance..

Moderator's Comments:
Mod Comment Please use [code] and [/code] tags when posting code, data or logs etc. to preserve formatting and enhance readability, thanks.
Last edited by zaxxon; 03-10-2011 at 07:44 AM.. Reason: code tags
# 2  
Old 03-10-2011
Remove the single quotes inside the sed command and try..Also sed flag g was misplaced..
Code:
sed "s@$time_val@$s_val@g" Taxpr_Param.txt > new_file

# 3  
Old 03-10-2011
thank you michaelrozar.
i have tried that also but its not working..
can you please check and give the reply..
# 4  
Old 03-11-2011
You would need to quote the variables to preserve spaces in between them..
Code:
chmod 777 Taxpr_Param.txt
s_val=`date '+%m/%d/%Y%t%H:%M:%S'`
q=`cat Taxpr_Param.txt |grep "LOAD_DATE="|head -1`
time_val=`echo "$q"|awk -F"=" '{print $2}'`
sed "s@$time_val@$s_val@"g Taxpr_Param.txt > new_file

If you just want to replace the date and do not want to store the values then try
Code:
sed "@LOAD_DATE@s@\(.*\)=.*@\1=`date '+%m/%d/%Y%t%H:%M:%S'`@" Taxpr_Param.txt > new_file

Last edited by michaelrozar17; 03-11-2011 at 05:11 AM.. Reason: added filter LOAD_DATE
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