Using sed or awk to replace digits in files Post: 303039457

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Top Forums UNIX for Beginners Questions & Answers Using sed or awk to replace digits in files Post 303039457 by duke0001 on Sunday 6th of October 2019 12:43:40 AM

10-06-2019

Registered User

Scrutinizer:

I used this SQL query to fetch business_day and Date_digits into shell variables jdate1 and jdate2. Then use sed to replace them. It worked well.
If using my SQL query, how it work with your awk code?. My query like this:

Code:

jdate1=`sqlplus -s /nolog <<EOF
connect / as sysdba
set pagesize 0 feedback off heading off
SELECT TO_CHAR(DW_ADHOC.F_FIND_LAST_BUSINESS_DAY, 'YYYYDDD') "Last_Business_Day" from dual;
exit
EOF`

This output is : 2019304

Code:

jdate2=`sqlplus -s /nolog <<EOF
connect / as sysdba
set pagesize 0 feedback off heading off
SELECT TO_CHAR(DW_ADHOC.F_FIND_LAST_BUSINESS_DAY, 'YY')||to_char(to_date(TO_CHAR(DW_ADHOC.F_FIND_LAST_BUSINESS_DAY, 'DDD'), 'j'), 'MM')
||'.'||TO_CHAR(DW_ADHOC.F_FIND_LAST_BUSINESS_DAY, 'DDD') "Julian Date Digits"  FROM dual;
exit
EOF`

This output is: 1910.304,

Then I used:

Code:

sed 's/[0-9]\{7\}/'$jdate1'/; s/[0-9]\{4\}\.[0-9]\{3\}/'$jdate2'/' test_file1.txt > test_file1_new.txt

Code:

sed 's/[0-9]\{7\}/'$jdate1'/; s/[0-9]\{4\}\.[0-9]\{3\}/'$jdate2'/' test_file2.txt > test_file2_new.txt

The two files has been replaced with correct Julian date digits in variables. I redirect output to a new file because Solaris do not support sed -i to direct change in place. Then I can overwrite the file with mv back to original name for another Application to use. I want to learn from you how to use your code awk to do the work. Thanks.

Last edited by duke0001; 10-07-2019 at 06:55 PM..

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