sed&awk

[ehab_2]

How can make ignore processing pf previuos record .

If y[i]=$0

for (i=1;i<=NR;i++)
{
print y[i]
}

The out put will be :
line1
line1
line2
line1
line2
line3

I want it :
line1
line2
line3

[Christian Gebhardt]

Hi
command sort and uniq

#cat file
line1
line1
line2
line1
line2
line3

#cat file | sort | uniq

line1
line2
line3

Chris

[Jean-Louis Phelix]

hi,

"sort -u file" will do it, but you will lost the initial order.

regards,

Jean-Louis

[T G Manikandan]

#sort -u

[Oren_3]

If the original order of the files is important to you, you can use a temp file containing the already printed files.

it should look:
tmp_file=/tmp/tmpfile.$$

if y[i]=$0
for (i=0,i<=NR;i++)
{
if (cat tmp_file|grep y[i]|wl -l == 0
{
echo y[i] >> tmp_file
printf(y[i])
}
}
\rm tmp_file

[H.Merijn Brand (procura]

# perl -ne '$x{$_}++ or print' file

prints unique lines keeping original order