Hi,
I would like extract from a file a character or pattern after ( n + 1) a specific pattern (n) . ( i supposed with awk)
how could i do ?
Thanks in advance. (1 Reply)
Hi All,
Below is the sample data of my files:
O|A|571000689|D|S|PNH|S|SI
sadm|ibscml1x|
I|A|571000689|P|S|PNH|S|SI
sadm|ibscml1x|
O|A|571000689|V|S|PNH|S|SI
sadm|ibscml1x|
S|C|CAM|D|S|PNH|R|ZOA|2004
bscml1x| ... (3 Replies)
ps -eaf | grep “oracleTRLV (LOCAL=NO)” | while read ora_proc
do
echo $ora_proc
done
I would like to modify the above shell so that if character 13 and 14 equal "12" to do something.
Sorry I'm new to shell:( (14 Replies)
hi ,
i am having a file
Full_ARTMAS_20110510152425.xml in my local directory. i wanted to extract the character at the 35143546 th position at line 1 of this file.Can any body help me how to do it???
regards
Anjali (2 Replies)
Greetings.
I need to extract text between two character positions, e.g: all text between character 4921 and 6534.
The text blocks are FASTA-format sequence of whole chromosomes, so basically a million A, T, G, C, combinations. E.g:
>Chr_1
ACCTGTTCAACTCTCAGGACTCTCAGGTCAACTCTCAG... (3 Replies)
Hi,
I need to extract the first character of second column of my file. If the condition matches, then I need to print the 2nd and 3rd column as my output
I tried below mentioned query but it was not working
awk -F'|' '$2~/^5/' Sgn_group.txt
File Name : Sgn_group.txt
country... (2 Replies)
Dear folks
Hello
I have a data set which one of the column of this data set are string and I want to extract numbers which is between two ":". However, I know the substr command which will do this operation but my problem is the numbers between two ":" have different digits. this will make my... (11 Replies)
Hello,
I have a file of strings a below:-
4358RYFHD9845
28/COC/UYF984
9834URD 98HJDU
I need to extract all the first numeric character of every sting as follows:-
4358
28
9834
thanks to suggest ASAP
Regards,
Jasi
Use code tags, thanks. (7 Replies)
Hi, I have a file consist of 25000 lines and each line has 2 columns 1 column with 6 numeric characters and 2nd one with 45000 numeric characters (not delimited). I want to take every 7th character form the 2nd column, keeping the first column. I made it in several steps but it run for 7 hours to... (7 Replies)
Discussion started by: SANDO
7 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)