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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 302975732 by MadeInGermany on Friday 17th of June 2016 02:40:27 PM
Old 06-17-2016
No it will do all replacements at once; you do not need an outer loop for each pattern.
A drawback is, it will produce a new file even if nothing was changed.
An improvement is: also produce a grep file
Code:
sed -n 's/..*=.*/s=&=g/p' < data.txt > data.sed
sed -n 's/=.*//p' < data.txt > data.grep

find "/tmp/config" -type f -print |
while read file
do
  if grep -f data.grep "$file" >/dev/null
  then
    sed -f data.sed "$file" > "$file"_tmp.replace
  fi
done

---------- Post updated at 13:40 ---------- Previous update was at 13:28 ----------

In case /usr/bin/grep does not take the -f, use /usr/xpg4/bin/grep
This User Gave Thanks to MadeInGermany For This Post:
mohtashims
 

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LEARN ABOUT V7

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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