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Find & Replace identifiers using a conversion table

 
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# 15  
Old 02-23-2012
input.tab:
Code:
Location	Item ID
rack1	12; 35
rack2	1235

table.tab:
Code:
From	To
12	AAA_alpha
35	MKIUY_gamma
1235	NJU_zulu

Code I used:
Code:
while read a b; do sed "s/\<$a\>/$b/g" input.tab > output.tab; mv output.tab input.tab; done < table.tab

I obtained:
Code:
Location	Item ID
rack1	12; 35
rack2	1235

Instead of:
Code:
Location	Item ID
rack1	AAA_alpha; MKIUY_gamma
rack2	NJU_zulu

[/CODE]
# 16  
Old 02-23-2012
Code:
$ a=12
$ b=AA
$ sed "s/\<$a\>/$b/g" test.txt
123456
AA
34

---------- Post updated at 02:55 PM ---------- Previous update was at 02:52 PM ----------

working fine for me

Code:
 
$ while read a b; do sed "s/\<$a\>/$b/g" input.tab > output.tab; mv output.tab input.tab; done < table.tab

$ cat input.tab 
Location        Item ID
rack1   AAA_alpha; MKIUY_gamma
rack35  NJU_zulu

# 17  
Old 02-23-2012
I triple check, it doesn't work for sure!
Which version of sed, and OSX do you use?
How to know which version of sed I am using?

---------- Post updated at 09:26 PM ---------- Previous update was at 05:02 AM ----------

Checked again, it doesn't work !

Is there any way by using awk instead of sed?

input.tab:
Code:
Location	Item ID
rack1	12; 35
rack2	1235

table.tab:
Code:
From	To
12	AAA_alpha
35	MKIUY_gamma
1235	NJU_zulu


And do something like that:
Code:
awk 'NR==FNR{A[$1]=$2;next}{print $2,A[$2]}' input.tab table.tab

(This command leaves input.tab unchanged)

To obtain:
Code:
Location	Item ID
rack1	AAA_alpha; MKIUY_gamma
rack2	NJU_zulu

# 18  
Old 02-24-2012
In the MAC OSX, can you try the below sed

Code:
 
sed "s/[[:<:]]$a[[:>:]]/$b/g"

This User Gave Thanks to itkamaraj For This Post:
lucasvs
 
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