AWK can handle this without having to read file2 more than once.
Your grep approach is treating the contents of file1 as a list of regular expressions when it should be treated as a list of literal text. While it doesn't seem to be a problem with the sample data, if the real data contains regular expression metacharacters, there will be problems. This can be avoided if fixed-string matching is used (-F).
The grep approach will match text at any location in the line, not just the first field. Also, it doesn't require that the match consist of an entire field; a substring match will trigger a false positive. Attempting to workaround this by wrapping "$code" with anchors and delimiters won't work if -F is used.
Quote:
Originally Posted by migurus
try this:
That's a good approach, but the implementation isn't as elegant and idiomatic as it could be. I would suggest ...
Regards,
Alister
hi all,
i searched in unix.com and accquired the following commands for extracting specific lines from a file ..
sed -n '16482,16482p' in.sql > out.sql
awk 'NR>=10&&NR<=20' in.sql > out.sql....
these commands are working fine if i give the line numbers as such .. but if i pass a... (2 Replies)
Hello,
i've got this output text:
and i need it to look something like this:
which means that there won't be absolute path of each directory, just it's size and the last word after last '/' in each line, and i also don't need last line '1.7M /tmp'
Looks like there is a simple... (5 Replies)
Hi,
I have one file, say file 1, that has data like below where 19900107 is the date,
19900107 12 144 129 0.7380047
19900108 12 168 129 0.3149017
19900109 12 192 129 3.2766666E-02
... (3 Replies)
I have this input file:
and the desired output is as follows:
Desired Output
This is a sample taken from a huge file. Basically, the script should take the tag (TDK11..1>) add everything that has bukle=A until it sees the blank lines. Then takes the next tag (TDK2222>) adds everything that... (4 Replies)
I have a table to data which one of the columns include string of text
from within that, I am searching to include few lines but not others
for example I want to to include some combination of word address such as (address.| address? |the address | your address) but not (ip address | email... (17 Replies)
I need help extracting specific lines in a text file. The file looks like this:
POSITION TOTAL-FORCE (eV/Angst)
-----------------------------------------------------------------------------------
1.86126 1.86973 1.86972 ... (14 Replies)
Hi All,
I am stuck in one step..
I have one file named file.txt having content:
And SGMT.perd_id = (SELECT cal.fiscal_perd_id FROM $ODS_TARGT.TIM_DT_CAL_D CAL
FROM $ODS_TARGT.GL_COA_SEGMNT_XREF_A SGMT
SGMT.COA_XREF_TYP_IDN In (SEL COA_XREF_TYP_IDN From... (4 Replies)
I have a series of csv files in the following format
eg file1
Experiment Name,XYZ_07/28/15,
Specimen Name,Specimen_001,
Tube Name, Control,
Record Date,7/28/2015 14:50,
$OP,XYZYZ,
GUID,abc,
Population,#Events,%Parent
All Events,10500,
P1,10071,95.9
Early Apoptosis,1113,11.1
Late... (6 Replies)