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identy the latest version using shell command

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Top Forums Shell Programming and Scripting identy the latest version using shell command
# 1  
Old 03-20-2009
identy the latest version using shell command
Hi,
I have some version number's present in a text file like
version.txt contains
1.0.0
1.0.1
1.0.2
1.0.3
1.0.4
(may be more that this) can we write any specific shell command to find it out the latest version (For this it is 1.0.4 ) ? I am a new user of shell command and cud not make any way out. Please help.Thank you.
# 2  
Old 03-20-2009
"tail -1 <file_name>"
# 3  
Old 03-20-2009
sir,
versiion name not necessarily be in sorted order it may be like
1.0.0
1.0.11
1.0.6
1.1.4
needs to be more generic Smilie
# 4  
Old 03-20-2009
For more info I have the file looks like this way (I am giving the more better look of the file)
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.0.9
1.0.0
1.0.1
1.0.10
1.0.11
1.0.2
1.1.1
1.2.1
1.1.2
1.1.3
1.1.4
1.1.5
1.2.2
2.1.0
2.1.1
1.2.5
1.2.4
1.2.3


how to identify ?? the latest version is 2.1.1
# 5  
Old 03-20-2009
Check syntax for your version of unix "sort" command - there is much variation.
The idea is to state that the period is the field delimiter and then sort the three fields in numerical order.

Code:
sort -t\. -k 1n,1n -k 2n,2n -k 3n,3n filename | tail -1

# 6  
Old 03-20-2009
A ton of thanks
# 7  
Old 03-20-2009
sort filename |tail -1
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