06-12-2012
AWK does support exponential notation.
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1. Shell Programming and Scripting
Hi,
I want to write a shell script which increments a particular column in a row from a text file and then adds another row below the current row with the incremented value .
For Eg .
if the input file has a row :
abc xyz lmn 89 lm nk o p
I would like the script to create something like... (9 Replies)
Discussion started by: aYankeeFan
9 Replies
2. Shell Programming and Scripting
File A
aa <space> --D--A--D---DDY---M--UM-M--MY
Another file
D3
M9
So output shud be
Here in FileA D which is 3 after removing dash
after we have counted dash D is position at 9
and for M is 23
final output will be
D9
M23 (2 Replies)
Discussion started by: cdfd123
2 Replies
3. Shell Programming and Scripting
Hi all,
I do have a tab delimited file
a1 a2 b1 b2 c1 c2 d1 d2 e1 e2 f1 f2
0 0 123 546 0 0 0 0 0 0 0 0
0 0 345 456 765 890 902 1003 0 0 0 0
534 768 0 0 0 0 0 0 0 0 0 0
0 0 0 0 456 765 0 0 0 0 0 0
0 0 0 0 0 0 12 102 0 0 0 0
456 578 789 1003 678 765 345 400 801 1003 134 765... (5 Replies)
Discussion started by: Lucky Ali
5 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I would like to add a new column containing the row numbers to a text file. How do I go about doing that? Thanks!
Example input:
A X
B Y
C D
Output:
A X 1
B Y 2
C D 3 (5 Replies)
Discussion started by: evelibertine
5 Replies
5. UNIX for Dummies Questions & Answers
Hi,
Trying to add a row of numbers. There are 24 number across. Would like to have column 25 sum each row.
10 3 45 49 0 24... Sum
3 200 3 9 1 3 ...... Sum
9 7 20 9 8 10 ...... Sum
Thank you. (5 Replies)
Discussion started by: jimmyf
5 Replies
6. UNIX for Dummies Questions & Answers
I have a spreadsheet of extremely long rows of numbers. I want to print only the last column. Tried using printf but there seems to be too many rows.
example:
3 100 34 7 23 0 8 ..... X
400 203 778 1 ..........Y
58 3 9 0 100 ..........Z
I only want to print X, Y and... (1 Reply)
Discussion started by: jimmyf
1 Replies
7. Shell Programming and Scripting
the following is used to add numbers:
echo 7 47 47 44 4 3 3 3 3 3 | awk '{ for(i=1; i<=NF;i++) j+=$i; print j; j=0 }'
how do i multiply OR subtract a row of numbers using the above tactic? (8 Replies)
Discussion started by: SkySmart
8 Replies
8. Shell Programming and Scripting
Hi again. Sorry for all the questions — I've tried to do all this myself but I'm just not good enough yet, and the help I've received so far from bartus11 has been absolutely invaluable. Hopefully this will be the last bit of file manipulation I need to do.
I have a file which is formatted as... (4 Replies)
Discussion started by: crunchgargoyle
4 Replies
9. Shell Programming and Scripting
Need help in coding:
File with several rows incl. numbers like
1 2 3 4
5 6 7 8
...
How can i build the sum of each row seperately?
10
26
...
Thx for help.
Please use CODE tags as required by forum rules! (13 Replies)
Discussion started by: smitty11
13 Replies
10. Shell Programming and Scripting
Hi,
i have a raw output file like this
167,63.50
167,63.50
168,63.68
166,63.68
168,63.68
I would like to add every each N rows (for example 60) and in a third column , a timestamp using the command date +"%H:%M"how can i do it with one single command ?
Thank you !! (5 Replies)
Discussion started by: Board27
5 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)