I am trying to pull data out of a file to execute a series of repetitive commands. One of the fields is a {hex number}.{hex number} pattern. I need the first part of that structure to pass into the command. The file structure is like this:
A 2007/10/20 09:50:00 li text ef6da.1 name ... (6 Replies)
Hi Experts,
I have a Input.txt document which contains data fields seperated by tabs. There are 4 fields totally Named UNIQUE, ORDER, CONTACT and WINS. The UNIQUE field contains unique ID and the CONTACT field contains data seperated by comma in some records. I am looking to write an awk script... (12 Replies)
Hi,
Probably a very weak question.. but I have tried all I know..
BPC0001:ANNUL_49542 0.0108 -0.0226 -0.0236 0.0042 0.0033 -0.0545 0.0376 0.0097 -0.0093 -0.032 Control
BPC0002:ANNUL_49606 0.0190 -0.0142 -0.0060 -0.0217 -0.0027 ... (3 Replies)
Hi there I have a text file with several fields separated by ";" as follow :
5466-43;5466;JOAN;LIGA;LIGA ESPANOLA;43;DEP LA CORUNA - OSASUNA;10/01/10 17:00
5466-44;5466;CARLES;LIGA;LIGA ESPANOLA;44;MALAGA - ATHL BILBAO;10/01/10 17:00
5466-45;5466;FAB;LIGA;LIGA ESPANOLA;45;REAL MADRID -... (4 Replies)
Hello;
I have a file consists of 4 columns separated by tab. The problem is the third fields. Some of the them are very long but can be split by the vertical bar "|". Also some of them do not contain the string "UniProt", but I could ignore it at this moment, and sort the file afterwards. Here is... (5 Replies)
Good day all
I need some helps,
say that I have data like below, each field separated by a tab
DATE NAME ADDRESS
15/7/2012 LX a.b.c
15/7/2012 LX1 a.b.c
16/7/2012 AB a.b.c
16/7/2012 AB2 a.b.c
15/7/2012 LX2 a.b.c... (2 Replies)
I had a text file(comma seperated values) which contains as below
196237,ram,25-May-06,ram.kiran@xyz.com,204183,Pavan,4-Jun-07,Pavan.Desai@xyz.com,237107,ram Chandra,15-Mar-10,ram.krishna@xyz.com ... (3 Replies)
I am trying to split a tab-delimeted file using awk after the second _ in bold. The awk below is close but splits on the first _, and I am not sure how to use the second _. Thank you :).
file
chr1 92145889 92149424 NM_001195684_exon_0_10_chr1_92145900_r 0 -
chr1 92161218 ... (4 Replies)
In the tab-delimited input below I am trying to use awk to -10 from $2 and +10 to $3. Something like
awk -F'\t' -v OFS='\t' -v s=10 '{split($4,a,":"); print $1,$2-s,$3+s,a,$5,$6} | awk {split(a,b,"-"); print $1,$2-s,$3+s,b-s,b+s,$5,$6}' input
should do that. I also need to -10 from $4... (2 Replies)
In the awk I am splitting on the : into array a, then splitting on the - into element b. I can not seem to duplicate b if there is no - after it. Lines 1,2,4 are examples. If there is a - after the number in b then the value to the right of it is $3 in the ouput. Thank you :).
awk... (2 Replies)
Discussion started by: cmccabe
2 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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 v5.16.3 2010-06-11 SHELL-QUOTE(1)