Each group of three numbers on each line are three probabilities that sum to one.
I want to output the maximum for each group of three. So desired output would be:
Quote:
0.788 0.800 0.500
0.675 0.812 1
or
Quote:
0.788
0.800
0.500
0.675
0.812
1
I've written the following kludge which works just fine on a small subset of this data but does not scale up well (because it involves an ugly triple nested for loop):
Code:
#!/bin/sh
length=$(awk '{n++}END{print n}' file )
width=$(awk 'NR == 1 { print NF }' file )
width=$( expr $width / 3 )
for ((i=1; i <= length; i++))
do
for ((j=1; j <= width; j++))
do
a=$(expr 1 + \( \( $j - 1 \) \* 3 \) )
b=$(expr $a + 2)
awk -v i=$i -v a=$a -v b=$b 'NR == i { for (k = a; k <= b; k++ )if ( $k > max) max = $k } END { print max}' file >> out
done
done
Does anyone know of a solution that will scale up well? Can it be accomplished with basic unix utilities/shell scripting?
Hi
Following is the code . When I give input as Bangalore,its dospalying Welcome to Hitech City. But say , if I select Delhi or US, its not displaying the corresponding message. Its still says Welcome to Hitech City.
Seems that it not entering in the elif part. Please suggest.
#!... (4 Replies)
Hi All,
How to read a file upto last line(End Of Line)
I wrote below program:
cat R2_20060719.610.txt | while read LINE
do
echo "$LINE"
done
above code reading all lines from a file and skipping last line......
is there anything wrong in my code.
Please help me out from this... (20 Replies)
I just want to write a little script, that reads the lines from a file, echos somthing in a new tmp.file and then do some commands whith the tmp.files.
while read -r line
do
echo "TEST=" > tmp.$$
echo "$line" >> tmp.$$
any_command < tmp.$$
done < $INPUTFILE
But I think I have to... (2 Replies)
Dear experts,
i am quite new to shell script please any one can help me in this regard
i would like write a script which takes input in the form
>./Test.sh a,10,b,20,c,30...
in this way i can give input in any number which is not constant
in the end through loop i want to... (3 Replies)
Hi everyone,
I have n number of data in my file "temp" in following order.In each line table_name and
column_name are different.input data is in same format each query in three lines.
ALTER TABLE table_name
ADD ( column_name1 VARCHAR2(10),
column_name2 VARCHAR2(70) );
... (23 Replies)
Hello I am very new to shell and I bought some books and trying to learn it. I started trying to write a script that will take a number and count it down to 1 with commas in between. This number can only be one argument. If lower than one or higher than one argument it sends an error message. ... (4 Replies)
Hi all,
I want to put a check in my script to check if the same instance is already running and not finished and if not then does not allow it to run! in which part of my script I should put this? and any idea how I should write it? tx (4 Replies)
Hi,
I have multiple files in a directory. Each file will have a header.I have to check if any of the files has 0 rows other than the header then I have to delete the files.
Here “ Empty file” in my case means a file has header information but no data. I have to delete such files.
If the file... (2 Replies)
In my script I need to loop around some files like below
example files are
fa.info.abcd
fa.info.bxde
fa.info.cdas
------
for test_data in fa.info.*
do
# Some text appending logic applied
# Copy to another directory
done
Now I need to discard some files while looping around
... (9 Replies)
Hi Friends, I have a file. the content is as below:
file1:
/A/B/C/abc.txt
2013-07-28 13:50:00,2013-07-31 01:00:00,5,710
/A/B/C/xyz.txt
2011-09-21 18:30:00,2013-07-30 06:15:00,15,65135
2009-11-09 18:00:00,2011-09-02 09:00:00,5,12345
2013-07-28 13:50:00,2013-07-31 01:00:00,5,710
... (2 Replies)
Discussion started by: vsachan
2 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)