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Print unique lines without sort or unique


 
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# 1  
Old 09-13-2013
Print unique lines without sort or unique

I would like to print unique lines without sort or unique. Unfortunately the server I am working on does not have sort or unique. I have not been able to contact the administrator of the server to ask him to add it for several weeks.
# 2  
Old 09-13-2013
If it doesn't have those very basic utilities, what does it have?

Code:
awk '! ($0 in X) { X[$0]; print }' inputfile

# 3  
Old 09-14-2013
Quote:
Originally Posted by Corona688
If it doesn't have those very basic utilities, what does it have?

Code:
awk '! ($0 in X) { X[$0]; print }' inputfile

It does have awk Smilie. I use awk on a regular basis. I would go crazy without awk.

What is the best way to check what basic utilities it has?
# 4  
Old 09-14-2013
Those missing programs are core utilities. Why would they be missing? Which OS is this?
# 5  
Old 09-14-2013
Quote:
Originally Posted by Scott
Those missing programs are core utilities. Why would they be missing? Which OS is this?
No idea. This seems like some bare minimum installation. I just discovered 7z is also missing.

Which OS is this?
No idea. The usual commands for checking are missing.

Code:
$ lsb_release -a
-bash: lsb_release: command not found
$ uname -a
Linux 2.6.32-358.18.1.el6.x86_64 #1 SMP Fri Aug 2 17:04:38 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux

Its some distro that has yum.
# 6  
Old 09-15-2013
RHEL 6.4
This and the package could be further determined by
Code:
cat /etc/*release
rpm -qf /usr/bin/sort

# 7  
Old 09-15-2013
Sure that sort and uniq are not on your system? Incorrect PATH? Use the find command to check for these binaries.
 

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