08-20-2010
and what i meant by horrify was about my horrible newbie script!!!
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Hi,
I have a file with duplicate lines in it. I want to keep only the duplicate lines and delete the non duplicates. Can some one please help me?
Regards
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Hi Guys and Girls
I'm having trouble outputing from a sorted file... i have a looooong list of PVIDs and need to only output only those which occur 4 times!! Any suggestions?
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Hi all,
I have a tab-delimited file and want to remove identical lines, i.e. all of line 1,2,4 because the columns are the same as the columns in other lines. Any input is appreciated.
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Hi All,
I am trying to remove the duplicate entries in a file and print them just once. For example, if my input file has:
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I have a file where some of the lines are duplicates.
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I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
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Dear All,
I have a two-column data file and want to duplicate data in second column w.r.t. first column.
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2 5.672
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...
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5.672
5.672
3.593
8.260
8.260
8.260
...
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Hi All,
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file and time for the interval 03:30 - 03:45
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TAIL(1) General Commands Manual TAIL(1)
NAME
tail - deliver the last part of a file
SYNOPSIS
tail [ +-number[lbc][rf] ] [ file ]
tail [ -fr ] [ -n nlines ] [ -c ncharacters ] [ file ]
DESCRIPTION
Tail copies the named file to the standard output beginning at a designated place. If no file is named, the standard input is copied.
Copying begins at position +number measured from the beginning, or -number from the end of the input. Number is counted in lines, 1K
blocks or characters, according to the appended flag or Default is -10l (ten ell).
The further flag causes tail to print lines from the end of the file in reverse order; (follow) causes tail, after printing to the end, to
keep watch and print further data as it appears.
The second syntax is that promulgated by POSIX, where the numbers rather than the options are signed.
EXAMPLES
tail file
Print the last 10 lines of a file.
tail +0f file
Print a file, and continue to watch data accumulate as it grows.
sed 10q file
Print the first 10 lines of a file.
SOURCE
/sys/src/cmd/tail.c
BUGS
Tails relative to the end of the file are treasured up in a buffer, and thus are limited in length.
According to custom, option +number counts lines from 1, and counts blocks and characters from 0.
TAIL(1)