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Shell Programming and Scripting

Read a value from a file

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# 1  
Old 03-18-2016
Read a value from a file
Hello All,

I am having the below txt file.

Code:
 
 stores.txt 
 12
 15
 45
 45
 50
 .
 .
 .
 .
 4564

Now I need to execute the below command to check whether the above numbers are present in an another file. And whatever numbers are not present, I need capture those numbers.

Code:
 
 For example 
 zgrep "|50|" sample.dat.gz

Can you please help me to do this in a shell script? Thanks for the help !
# 2  
Old 03-18-2016
With GNU-grep (not sure if -w is a standard option):
Code:
$ cat x.txt
4
500
30
15
$ cat stores.txt
12
15
45
45
50
90
$ grep -vwf x.txt stores.txt
12
45
45
50
90

The v option is used to display only non matching lines, the f option lets you specify a file for the patterns and the w option tells grep to match only whole words (without it 4 would match 45).
# 3  
Old 03-18-2016
Thanks.
But my sample.dat.gz file will have the data as below.

Code:
01|US|45|03/17/2016|
01|US|20|03/17/2016|
01|US|785|03/17/2016|
01|US|15|03/17/2016|

Last edited by jim mcnamara; 03-18-2016 at 09:35 AM..
# 4  
Old 03-18-2016
Code:


Code:



zgrep -v -f <(awk '{printf("|%s|\n", $0)}' stores.txt)  sample.dat.gz

try that.

If you need to work at a specified field level you need to be more explicit about what fields contain the data you want. This works for linux and only on whole records in the .gz file
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