05-12-2008
I didn't get it, do you want to process the input file if the number is above certain value or not ? What solution you are looking for, shell script, perl, awk ? What access you have and what is the OS ?
In general, before deploying the input file, you have to scan each line, count the number of characters, and proceed based on the returned value.
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
Can any one tell me, what is the maximum number of characters that can be stored in a variable?
Thanks in Advance,
Shan (9 Replies)
Discussion started by: pcshan
9 Replies
2. UNIX for Dummies Questions & Answers
Hi,
Can anyone tell me what the maximum amount of input characters is on solaris command line? (standard ksh I think) (1 Reply)
Discussion started by: marcello
1 Replies
3. Programming
Hi All,
We can find the maximum of open file descriptors in hold with respect to a process.
As default size was 256 (with getrlimit) and the hard limt was 65536
I tried changing the limit to 1024(with setrlimit)
successfully changed the limit
but still I couldnt have as many open file... (3 Replies)
Discussion started by: matrixmadhan
3 Replies
4. Shell Programming and Scripting
Hey , I want to check the row in a file with maximum characters .
the output sud contain that row number along with the no of characters. (4 Replies)
Discussion started by: mohapatra
4 Replies
5. UNIX for Dummies Questions & Answers
Hello,
Can anyone let me know what is the maximum file size that can be given as input for the "Diff" Command in Unix?
I have a file size as large as 28MB and which can also increase. Will I face any issues with such a file size. If yes, What is the other alternative.
Thanks in advance for... (1 Reply)
Discussion started by: Neeraja
1 Replies
6. Shell Programming and Scripting
Hi,
Could any one please let me know what is the maximum number of characters
that will fit into a single line of a flat file on a unix.
Thanks. (1 Reply)
Discussion started by: Shivdatta
1 Replies
7. Programming
stupid question (0 Replies)
Discussion started by: puttster
0 Replies
8. Shell Programming and Scripting
i want to get input and depending on it create new commands for input to expect.
But problem is that after giving date or month as 01-09 it is interpretation as 1-9
echo -n "ENTER DATE "
read d1
echo -n "ENTER MONTH "
read m1
echo -n "ENTER YEAR"
read y1
o=1
i=1
d2=`expr $d1... (1 Reply)
Discussion started by: sagar_1986
1 Replies
9. Shell Programming and Scripting
I am trying to calculate the maximum number from four numbers input by the user. I have the following code, but it does not work. It says there's an error with the last line "done". Any help would be appreciated.
max=0
echo "Please enter four numbers: "
for i in 1 2 3 4
do
read number... (17 Replies)
Discussion started by: itech4814
17 Replies
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.
ENVIRONMENT
The LANG, LC_ALL, LC_COLLATE and LC_CTYPE environment variables affect the execution of uniq as described in environ(7).
EXIT STATUS
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 conforms to IEEE Std 1003.1-2001 (``POSIX.1'') as amended by Cor. 1-2002.
HISTORY
A uniq command appeared in Version 3 AT&T UNIX.
BSD
December 17, 2009 BSD