Thanks for a very comprehensive reply but as I'm able to verify the file meets the stated requirements before reformatting I don't have to cater for all the exception conditions.
OK. If you've pre-verified the input file, you can strip my suggestion down to:
and get the same output.
This User Gave Thanks to Don Cragun For This Post:
Hello,
I have a single column of data that I would like to cut/print (with awk or ...) into multiple columns at every empty row (or common character).
Input:
5.99123
5.94693
7.21383
5.95202
0.907935
5.99149
6.08427
0.975774
6.077
Output:
5.99123 5.95202 6.08427
5.94693... (7 Replies)
Hi All,
I have a table with 10 columns. Some columns(2nd,4th,5th,7th,8th and 10th) are Not Null columns. I'll get a tab-delimited file and want to check col by col and generate seperate error code for each col eg:102 if 2nd col value is NULL and 104 if 4th col value is NULL so on... I am a... (7 Replies)
hey guys...
Im looking to do the following:
1
2
3
4
5
6
7
8
9
Change to:
1 4 7
2 5 8
3 6 9
Did use | perl -lpe'$\=$.%3?$":"\n"' , but it doesnt give me the matrix i want. (3 Replies)
Hello,
I have a file that contains 64,235 columns and over 1000 rows and looks similar to this:
ID dad mom 1 2 3 4 5.... 64232
1234 5678 6789 AA BB CC DD EE....ZZ
1342 5786 6897 BB CC DD EE FF....AA
1423 5867 6978 CC DD EE FF GG....BB
I need to leave the first three columns in... (4 Replies)
I have a File with these format:
A1
A2
A3
A4
B1
B2
B3
B4
.
.
.
And I wont these format:
A1 A2 A3 A4
B1 B2 B3 B4
.. .. .. .. .. ...
How can I do that???
thanks (1 Reply)
Hi,
I have the following input file
32895901-d17f-414c-ac93-3e7e0f5ec240 AND @GDF_INPUT
73b129e1-1fa9-4c0d-b95b-4682e5389612 AUS @GDF_INPUT
40f82e88-d1ff-4ce2-9b8e-d827ddb39447 BEL @GDF_INPUT
36e9c3f1-042a-43a4-a80e-4a3bc2513d01 BGR @GDF_INPUT
I want to split column 3 into two columns:... (1 Reply)
Hello everyone,
I searched the forum looking for answers to this but I could not pinpoint exactly what I need as I keep having trouble.
I have many files each having two columns and hundreds of rows.
first column is a string (can have many words) and the second column is a number.The files are... (5 Replies)
Hi Experts,
Please bear with me, i need help
I am learning AWk and stuck up in one issue.
First point : I want to sum up column value for column 7, 9, 11,13 and column15 if rows in column 5 are duplicates.No action to be taken for rows where value in column 5 is unique.
Second point : For... (1 Reply)
Discussion started by: as7951
1 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)