I need to extract certain pieces from a string, wher delimiters may vary. For example
A0 B0 C0 12345677 X0 Y0 Z0
A1-B1 C1 12345678 X1 Y0 Z0
A1/B2 C77 12345679 X2 Y0 Z0
I need to get
C0 12345677 X0
C1 12345678 X1
C77 12345679 X2
I tried sed, see example below:
echo 'A0 B0... (2 Replies)
I have a line of text for example
aaaa bbbb cccc dddd eeee ffffff
I would need to get the cccc however bbbb could be there or not.
So whether bbbb is in the line or not I need cccc.
I was looking at either awk or sed....and trying to start at c and end until the next space.
Also... (11 Replies)
Good afternoon!
I have an XML file from which I want to extract only certain elements contained within each line. The problem is that the format of each line is not exactly the same (though similiar). For example, oa_var will be in each line, however, there may be no value or other... (3 Replies)
Basically , i want to delete strings of a particular pattern from the flat file which is " | " pipe delimited.
Below are the valid formats :
1) AAA (0) 111-111-111, AAA, BB
2) AAA (0) 111-111-1111;X, AAA, BB
original flat file example :
|ABC ABC XHAMK|AAA (0) 111-111-111, AAA,... (3 Replies)
Hi All,
i have file name like below
ABC_065224_123456_123456_your_130413_163005.txt
ABC_065224_123456_MAIN_20130413_163005.txt
ABC_065224_123456_123456_MAIN_130413_163005.txt
ABC_065224_123456_123456_434567_MAIN_130413_163005.txt
i need to find out the number of characters in the filed... (6 Replies)
Hi All,
I'm stuck-up in finding a way to skip the delimiter which come within double quotes using awk or any other better option. can someone please help me out.
Below are the details:
Delimited: |
Sample data: 742433154|"SYN|THESIS MED CHEM PTY.... (2 Replies)
Hello,
I would need to replace a delimiter in a flat file using.I would like to replace the semicolon (";") but only if it was contained in a string between quotes. For example:
Original flat file example:
abc;abc;"abc;abc";cd;"ef;ef";abc
aa;bb;"aa";cc;"ddd;eee";ff
Desired output:... (9 Replies)
Discussion started by: bartleby
9 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)