Hi Unix gurus,
I have a file. I need to insert sequential number at the starting of the file. Fields are delimited by "|". I know the starting number.
Example:
File is as follows
|123|4test|test
|121|2test|test
|x12|1test|test
|vd123|5test|test
starting number is : 120
... (7 Replies)
Hi,
I can't find how to achive such thing, please help.
I have try with uniq and comm but those command can't compare columns just whole lines,
I think awk will be the best but awk is magic for me as of now.
file a
a1~a2~a3~a4~a6~a7~a8
file b
b1~b2~b3~b4~b6~b7~b8
output 1:
compare... (2 Replies)
Hi ;
I have a question regarding the uniq command in unix
How do I uniq 3rd field in a file ?
original file :
zoom coord 39 18652 39 18652
zoom coord 39 18653 39 18653
zoom coord 39 18818 39 18818
zoom coord 39 18840 39 18840
zoom coord 41 15096 41 15096
zoom... (1 Reply)
Hello all, new to unix and have just found the forum.
I think I will be here quite often, and hope that in time i will be able to provide soem help, role on not being a newbie anymore :)
I have a question which iI am hoping someone could help me with.
If i have a file with lines in in thus... (8 Replies)
I have a file with list of redundant server names and want only unique ones of those.
I have used following command but still redudant ones are listing
$cat file|sort|uniq
where could be the problem.
Thanks,
Srinivas (3 Replies)
Hello,
I have a list of files generated like this:
find dir -type f > file_list
I want to get a list of just the unique directories. I can't create a temporary file. So the idea is to do a working equivalent to this:
cat file_list | dirname | uniq
But of course that doesn't... (4 Replies)
Hi,
I am having trouble while using 'sed' with reading files. Please help. I have 3 files. File A, file B and file C. I want to find content of file B in file A and replace it by content in file C.
Thanks a lot!!
Here is a sample of my question.
e.g. (file A: a.txt; file B: b.txt; file... (3 Replies)
I have an output file .dat. From this file i have to do a distinct of the ID using the sort uniq command in bash script. How can i do it? i found :
sort -u ${FILEOUT_DAT}
but i don't think is my solution because the id isn't specified.. is there other solution? (7 Replies)
hi all,
i had the below script
x=`cat input.txt |wc -1`
awk 'NR>1 && NR<'$x' ' input.txt > output.txt
by using above script i am able to remove the head and tail part from the input file and able to append the output to the output.txt but if i run it for second time the output is... (2 Replies)
Discussion started by: hemanthsaikumar
2 Replies
LEARN ABOUT OPENDARWIN
uniq
UNIQ(1) BSD General Commands Manual UNIQ(1)NAME
uniq -- report or filter out repeated lines in a file
SYNOPSIS
uniq [-c | -d | -u] [-i] [-f num] [-s chars] [input_file [output_file]]
DESCRIPTION
The uniq utility reads the specified input_file comparing adjacent lines, and writes a copy of each unique input line to the output_file. If
input_file is a single dash ('-') or absent, the standard input is read. If output_file is absent, standard output is used for output. The
second and succeeding copies of identical adjacent input lines are not written. Repeated lines in the input will not be detected if they are
not adjacent, so it may be necessary to sort the files first.
The following options are available:
-c Precede each output line with the count of the number of times the line occurred in the input, followed by a single space.
-d Only output lines that are repeated in the input.
-f num Ignore the first num fields in each input line when doing comparisons. A field is a string of non-blank characters separated from
adjacent fields by blanks. Field numbers are one based, i.e. the first field is field one.
-s chars
Ignore the first chars characters in each input line when doing comparisons. If specified in conjunction with the -f option, the
first chars characters after the first num fields will be ignored. Character numbers are one based, i.e. the first character is
character one.
-u Only output lines that are not repeated in the input.
-i Case insensitive comparison of lines.
DIAGNOSTICS
The uniq utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
The historic +number and -number options have been deprecated but are still supported in this implementation.
SEE ALSO sort(1)STANDARDS
The uniq utility is expected to be IEEE Std 1003.2 (``POSIX.2'') compatible.
HISTORY
A uniq command appeared in Version 3 AT&T UNIX.
BSD June 6, 1993 BSD