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Top Forums Shell Programming and Scripting Need to find a string, check the next line, and if it matches certain criteria, replace it with a s Post 302371777 by midniteslice on Monday 16th of November 2009 07:39:27 AM
Old 11-16-2009
Need to find a string, check the next line, and if it matches certain criteria, replace it with a s

Hey Fellas.

I am new to scripting. I have searched through the forums and found a lot of good info, but I can't seem to get any of it to work together. I am trying to find a particular sting in a file, and if the next string matches certain criteria, replace it with a string from a csv file. Roughly about 1500 times in the file. I have been trying to do this with awk/sed, but i haven't had the best of luck.
example:
find the string that starts with data7
if the string on the next line has the word prisoner then replace it with the string in line one on the csv file.
the next instance of the pattern would be replaced by the string in line 2 of the csv file. and so on.
the word prisoner appears multiple times in the file, but i only want to replace the ones that directly follow the string containing "data7"
does this make sense?

When i say i'm brand new to scripting i mean BRAND new. I'm taking some classes, but i need to get this done as soon as possible and what i have learned so far hasn't gotten me much closer. any help ya'll can give would be greatly appreciated.
Thanks!
 

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GIT-REPLACE(1)							    Git Manual							    GIT-REPLACE(1)

NAME
git-replace - Create, list, delete refs to replace objects SYNOPSIS
git replace [-f] <object> <replacement> git replace -d <object>... git replace -l [<pattern>] DESCRIPTION
Adds a replace reference in refs/replace/ namespace. The name of the replace reference is the SHA-1 of the object that is replaced. The content of the replace reference is the SHA-1 of the replacement object. The replaced object and the replacement object must be of the same type. This restriction can be bypassed using -f. Unless -f is given, the replace reference must not yet exist. There is no other restriction on the replaced and replacement objects. Merge commits can be replaced by non-merge commits and vice versa. Replacement references will be used by default by all Git commands except those doing reachability traversal (prune, pack transfer and fsck). It is possible to disable use of replacement references for any command using the --no-replace-objects option just after git. For example if commit foo has been replaced by commit bar: $ git --no-replace-objects cat-file commit foo shows information about commit foo, while: $ git cat-file commit foo shows information about commit bar. The GIT_NO_REPLACE_OBJECTS environment variable can be set to achieve the same effect as the --no-replace-objects option. OPTIONS
-f, --force If an existing replace ref for the same object exists, it will be overwritten (instead of failing). -d, --delete Delete existing replace refs for the given objects. -l <pattern>, --list <pattern> List replace refs for objects that match the given pattern (or all if no pattern is given). Typing "git replace" without arguments, also lists all replace refs. CREATING REPLACEMENT OBJECTS
git-filter-branch(1), git-hash-object(1) and git-rebase(1), among other git commands, can be used to create replacement objects from existing objects. If you want to replace many blobs, trees or commits that are part of a string of commits, you may just want to create a replacement string of commits and then only replace the commit at the tip of the target string of commits with the commit at the tip of the replacement string of commits. BUGS
Comparing blobs or trees that have been replaced with those that replace them will not work properly. And using git reset --hard to go back to a replaced commit will move the branch to the replacement commit instead of the replaced commit. There may be other problems when using git rev-list related to pending objects. SEE ALSO
git-hash-object(1) git-filter-branch(1) git-rebase(1) git-tag(1) git-branch(1) git(1) GIT
Part of the git(1) suite Git 1.8.5.3 01/14/2014 GIT-REPLACE(1)
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