After applying code tags to your snippets, I only see 3 or 4 columns/fields per line. It might help if you use some kind of field separator for every line so that you have a consistent number of fields per row. That would make parsing much easier, if this is possible.
Example:
I took a semicolon as delimeter. Where there is an empty column/field, you just have 2 ;; adjacent to each other, like in a csv file. With having just <n> of blanks between them, it is not easy to check which of the fields is empty and the wrong variable might be assigned.
Hi All,
I got a very strange problem, i have created a cron schedule that will run a programme once in every 12 mins, like
04,16,28,40,52 * * * * /myf/startProcessA 1> &-
Some time the cron skips the execution such as 04,28 instead of executing at 16 mins. it starts execution at 28, i... (6 Replies)
i want to give numbers to cut without worrying about the spaces;
echo "12 345 6 78 9" | cut -c 1-9
echo "123 456 789" | cut -c 1-9
echo "1 2 3 4 5 6 7 8 9" | cut -c 1-9
the output of these three must be allways;
123456789
is that posible? (6 Replies)
Hi
I have a shell script that looks for running processes in order to kill them. The script (ksh) gets the PID of these processes using the following:
PROCS=`ps -fu ${USERID} | egrep "MONITOR" | grep -v grep | cut -d" " -f4`
However, I spotted an issue where PID's of different lengths... (3 Replies)
I am trying to use wget to automate downloading of some mp3/wav files.
However, I can't get it to follow the link to the mp3s.
This is the line (it is not really the website):
wget -prl 1 http://website.com/alarmsHowever, if I right-click and copy the link on the webpage in firefox, then... (4 Replies)
Hi
I tried to extract 19 characters (default) enclosed with in tag from a file using cut command. If the characters comprises of double space, the cut command gives the output with a single spacing.
file 1
<name>Kumar Rajasekaran</name>
cut -c7-26 "file1"
the out put i received is ... (48 Replies)
This script is supposed to display a file ( crontab ), ask the user if they wish to update the file, then it goes through an update routine.
#!/bin/bash
FILE=/etc/crontab
tail -5 $FILE
echo -n "Does crontab need updating"
read HOURS
...routines ....etc...
Runs locally... (8 Replies)
Hi,
I am new to linux. I am using more command to view the contents of a file. If the file has many pages i am using f to move forward to the next page.
But when i press f it skips to two pages instead of one page. i checked the man more.
It shows the default is 1. Please share your... (1 Reply)
Hi
Can anyone what I am doing wrong while using cut command.
for f in *.log
do
logfilename=$f
Log "Log file Name: $logfilename"
logfile1=`basename $logfilename .log`
flength=${#logfile1}
Log "file length $flength"
from_length=$(($flength - 15))
Log "from... (2 Replies)
hay
i am trying to get JUST the PID from the ps command.
my command line is:
ps -ef | grep "mintty" | cut -d' ' -f2
but i get an empty line. i assume that the delimiter is not just one space character, but can't figure out what should i do in order to do that.
i know i can use awk or cut... (8 Replies)
I'm a complete beginner in UNIX (and not a computer science student either), just undergoing a tutoring course. Trying to replicate the instructions on my own I directed output of the ls listing command (lists all files of my home directory ) to My_dir.tsv file (see the screenshot) to make use of... (9 Replies)
Discussion started by: scrutinizerix
9 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