8 More Discussions You Might Find Interesting
1. UNIX for Beginners Questions & Answers
Hi ALL,
I am having semi column separated file as below. I am having negative values for the records starting with 11095. How can I convert that positive number
I tried this below seems not working
sed 's/ \(*\)$/ -\1/;t;s/\(.*\)-/\1/ myfile
myfile... (6 Replies)
Discussion started by: arunkumar_mca
6 Replies
2. Shell Programming and Scripting
Dear All,
I have to split a tab delimited file in two files based on the presence of a positive or negative in column number 9 , for example
file:
A 1 5 erg + 6766 0.9889 0.9817 9.01882 erg inside upstream
B 1 8 erg2 + 6766 0.9889 0.9817 -9.22 erg2 inside... (3 Replies)
Discussion started by: paolo.kunder
3 Replies
3. Shell Programming and Scripting
Hi Unix Gurus,
I have a requirement to generate positive random 16 and 13 digit numbers.
Here is the script I have so far.....
number=$RANDOM$RANDOM$RANDOM$RANDOM;
let "number %= 10000000000000";
echo $number
But sometimes it is generating negative numbers and also 15 digit... (8 Replies)
Discussion started by: scorpioraghu
8 Replies
4. UNIX for Dummies Questions & Answers
I have read the below from the book bash cookbook.Tail +1 filenames is similar to cat filename
I have tried the same in Ubuntu 11.10 with bash. 4.0 .
I have received error for the Same.
May I know in which system that will work fine ?
Thanks (1 Reply)
Discussion started by: pandeesh
1 Replies
5. Shell Programming and Scripting
Let, I have three numbers
+00123.25
-00256.54
+00489.23
I need to sum up all those three numbers, after storing them in three variables (say var1, var2, var3).
I used both expr and BC, but they didn't work for me.
But, I am not able to sum up them, as I don't have any idea how to... (13 Replies)
Discussion started by: mady135
13 Replies
6. Shell Programming and Scripting
Hello,
I have a list like this :
1
2
-4
0
-3
-7
5
6 etc.
Is there a way to remove all the positive values and print only the negative values, without using grep, sed or awk?
Thanks,
Prasanna (4 Replies)
Discussion started by: prasanna1157
4 Replies
7. Shell Programming and Scripting
Hi,
I have a file that looks like this:
Jake 2 3 4 6 4 3 -2 -1
Jerry 1 2 3 2 1 7 -6 -1
Timmy -1 -4 -5 -8 9 3 1
I want to find the most positive and negative value for each row and also define its position (based on column #)
So the output would look... (7 Replies)
Discussion started by: gisele_l
7 Replies
8. Shell Programming and Scripting
Hello,
For my weather station I have made a little perl script to put the data into cacti. The next problem I have.
I can only get positive numbers or negative numbers.
What do I do:
Though a shell scrip I call the perl script.
Shell script:
#!/bin/sh
cat data.txt | stats.pl
Perl... (4 Replies)
Discussion started by: rbl-blacklight
4 Replies
YESTERDAY(1) General Commands Manual YESTERDAY(1)
NAME
yesterday - print file names from the dump
SYNOPSIS
yesterday [ -c ] [ -date ] files ...
DESCRIPTION
Yesterday prints the names of the files from the most recent dump. Since dumps are done early in the morning, yesterday's files are really
in today's dump. For example, if today is March 17, 1992,
yesterday /adm/users
prints
/n/dump/1992/0317/adm/users
In fact, the implementation is to select the most recent dump in the current year, so the dump selected may not be from today.
With option -c, yesterday copies the dump file to the current directory.
The date option selects other day's dumps, with a format of 2, 4, 6, or 8 digits of the form dd, mmdd, yymmdd, or yyyymmdd.
Yesterday does not guarantee that the string it prints represents an existing file.
EXAMPLES
Back up to yesterday's MIPS binary of vc:
cd /mips/bin
yesterday -c vc
Temporarily back up to March 1's MIPS C library to see if a program runs correctly when loaded with it:
bind `{yesterday -0301 /mips/lib/libc.a} /mips/lib/libc.a
rm v.out
mk
v.out
FILES
/n/dump
SOURCE
/rc/bin/yesterday
SEE ALSO
fs(4)
BUGS
It's hard to use this command without singing.
YESTERDAY(1)
