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Replacing string values from a File

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# 1  
Old 11-16-2011
Replacing string values from a File
I want to replace string values from a file to a file

For eg : File1 has 30 lines of string with values, those specific values needs to be changed in file2 and remaining values in file2 should be as it is.



For example:

From file (File1)
cluster.name=secondaryCluster

To replace File (File2)
cluster.name=CoreSetupCluster

(in the above CoreSetupCluster in file2 should be changed to secondaryCluster as in file1
# 2  
Old 11-16-2011
Code:
awk 'BEGIN{FS=OFS="="}NR==FNR{a[NR]=$NF;next}{$NF=a[FNR]?a[FNR]:$NF}1' file1 file2

# 3  
Old 11-17-2011
Value not changed :
Code:
sriram@ubuntu:~/perl/Awk$ awk 'BEGIN{FS=OFS="="}NR==FNR{a[NR]=$NF;next}{$NF=a[FNR]?a[FNR]:$NF}1' file1 file2
value=value1
value2=value3

sriram@ubuntu:~/perl/Awk$ cat file1 
value=value1
value2=value3

sriram@ubuntu:~/perl/Awk$ cat file2
value=value1
value2=value2

Moderator's Comments:
Mod Comment Please use code tags!
Last edited by zaxxon; 11-17-2011 at 04:21 AM.. Reason: code tags
# 4  
Old 11-17-2011
Code:
awk -F= 'NR==FNR{a[$1]=$2;next}a[$1]{$2=a[$1]}1' OFS="=" file1 file2 > newfile

# 5  
Old 11-22-2011
No , Smilie ,, Let me be more clear and explain you... file1 contains 10 entries , all entries are seperated with = sign, file2 contains 100 entries... all i want is if any lines starting before = sign matches file1 in file2 , then replace that particular line in file2 with file1 values ... hope i am more clear this time...



Thanks,
# 6  
Old 11-22-2011
The question was quite clear. What doesn't work? What output did you get?
# 7  
Old 11-24-2011
yes looks good ... how do i replace it in actual file rather than a new file >> does not work
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