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Full Discussion: Search and Replace in a new FILE.
Top Forums Shell Programming and Scripting Search and Replace in a new FILE. Post 302975727 by mohtashims on Friday 17th of June 2016 01:55:50 PM
Old 06-17-2016
Quote:
Originally Posted by RudiC
Try this boiled down attempt - might not work on Solaris:

Code:
find /tmp/config -type f -exec grep -lE "(white|red|blue)[^=]" {} + |  awk '
FNR == 1        {FC++
                }
FC == 1         {ARGV[ARGC++] = $1
                 next
                }
FC == 2         {RP[$1] = $2
                 next
                }
FNR == 1        {NFN = FILENAME ".tmp.replace"
                }
                {for (r in RP) gsub (r, RP[r])
                 print > NFN     
                }
' - FS="=" data.txt

EDIT: Thinking twice, I don't really like that. Let me work on sth. that extracts the keywords for the grep from the data file...
I don't want to restrict to these three "white|red|blue"

The data.txt may contain as many replace string as we like.

---------- Post updated at 12:55 PM ---------- Previous update was at 12:34 PM ----------

Quote:
Originally Posted by MadeInGermany
I would use the following sed script to produce another sed script:
Code:
sed -n 's/..*=.*/s=&=g/p' < data.txt > data.sed

then run this on on your input file(s)
Code:
...
while read file
do
  sed -f data.sed "$file" > "$file"_tmp.replace
done

How will this work ?

Code:
sed -f data.sed "$file" > "$file"_tmp.replace

It will work for the first string replacement.

But for the entry string replacement after reading from the data.txt it will not update "$file"_tmp.replace rather take "$file" as the input again and override the first replaced string.

So, it needs to update the same "$file"_tmp.replace for each entry it pickes from the data.txt. Note: data.txt can have as many replace entries as the user likes to feed-in.
 

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