Hi all,
I have three files, one is a navigation file, one is a depth file and one is a file containing the measured field of gravity. The formats of the files are;
navigation file:
2006 320 17 39 0 0 *nav 21.31542 -157.887
2006 320 17 39 10 0 *nav 21.31542 -157.887
2006 320 17 39 20 0... (2 Replies)
Hello,
I have a matrix 200*10,000 and I need to extract the columns between 40 and 77. I dont want to write in awk all the columns. eg: awk '{print $40, $41, $42,$43 ... $77}'. I think should exist a better way to do this. (10 Replies)
hi everyone!
I already posted it in scripts, I'm sorry, it's doubled
I'd like to extract a single column from 5 different files and put them together in an output file. I saw a similar question for 2 input files, and the line of code workd very well, the code is:
awk 'NR==FNR{a=$2; next}... (1 Reply)
Hi, I need to create weekly files from daily records stored in individual monthly filenames from 1999-2010. my sample file structure is like the ones below:
daily record stored per month:
199901.xyz, 199902.xyz, 199903.xyz, 199904.xyz ...199912.xyz
records inside 199901.xyz (original data... (4 Replies)
Hi everyone!!
I need to apply a simple command to extract columns from a matrix, but I need to extract contemporary from the first to the tenth columns, than from the eleventh to the twentyth and so on...
how can i do that? (1 Reply)
So I have a space delimited file that I'd like to split into multiple files based on multiple column values.
This is what my data looks like
1bc9A02 1 10 1000 FTDLNLVQALRQFLWSFRLPGEAQKIDRMMEAFAQRYCQCNNGVFQSTDTCYVLSFAIIMLNTSLHNPNVKDKPTVERFIAMNRGINDGGDLPEELLRNLYESIKNEPFKIPELEHHHHHH
1ku1A02 1 10... (9 Replies)
Hi, I'm trying to use awk arrays to compare values across two files based on multiple columns. I've attempted to load file 2 into an array and compare with values in file 1, but success has been absent. If anyone has any suggestions (and I'm not even sure if my script so far is on the right lines)... (4 Replies)
I have a series of csv files in the following format
eg file1
Experiment Name,XYZ_07/28/15,
Specimen Name,Specimen_001,
Tube Name, Control,
Record Date,7/28/2015 14:50,
$OP,XYZYZ,
GUID,abc,
Population,#Events,%Parent
All Events,10500,
P1,10071,95.9
Early Apoptosis,1113,11.1
Late... (6 Replies)
Hello All
I'm joining two files using Awk by Left outer join on the file 1
File 1
1 AA
2 BB
3 CC
4 DD
File 2
1 IND 100 200 300
2 AUS 400 500 600
5 USA 700 800 900 (18 Replies)
Hello All,
I have three input files
cat file1
col1|col2|col3
a|1|A
b|2|B
cat file2
col1|col2|col3
c|3|C
cat file3
col1|col2|col3
d|4|D
e|5|E
i want below output
file4 col1|col2
a|1 (6 Replies)
Discussion started by: looney
6 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)