Hi,
I am trying to create a text file from data retrieved from a query.The data retrieved is having this character '^L' at regular intervals of the data.
How can i eliminate this, Please find below the sample data.
I tried sed -e "s/\^L//g" to convert it, but with no luck
^LCODE*SERIAL... (11 Replies)
I want to extract the string TC from the string TC10, the string can have any characters
out of .
I used the following code but didnt get the right output. Please guide
nuc=match(val,/*/)
seq=substr(val,RSTART,RLENGTH)
---------- Post updated at 09:40 PM ---------- Previous update was... (0 Replies)
Hello,
I have a file like following:
ALB_13554 1 1 1
ALB_13554 1 2 1
ALB_18544 2 0 2
ALB_18544 1 0 1
This is a sample of my file, my real file has 441845 number of fields. What I want to do is to calculate the number of 1 and 2 in each column using AWK, so, the output file looks like... (5 Replies)
I found a closed thread that helped quite a bit. I tried adding the URL, but I can't because I don't have enough points... ?
Modifying the syntax to remove ! ~
find . -type f -name '*~\!]*' |
while IFS= read -r; do
mv -- "$REPLY" "${REPLY//~\!]}";
done
These messages are... (2 Replies)
Hi All,
I need to remove control m character from a file.
Steps which i am doing in shell script are:
1) We are comparing the header of the file to the database table header
Here the file header has control-m characters. How do i remove it.
Please help. Below are the steps i am using,... (12 Replies)
echo "***Enter new LISTENER_PORT (only applicable to new instance), "
I used the following:
E486: Pattern not found: echo \"\*\*\*Enter new LISTENER_PORT \(only applicable to new instanace\), \"
when I try to search for the above line, I'm not able to do it
so how do I search for the... (5 Replies)
Hi All,
Please help me how to remove the records from the file if it is having more number of fields than the required one, before loading into stage
Here is the sample records. File is space delimited one
chandu 1121324 CC ( 2 spaces)
chandu balu 434657 DD (3 spaces) -- failing due to... (10 Replies)
hi Gurus,
I need separate a file which is one huge line to multiple lines based on certain number of charactors. for example:
abcdefghi high abaddffdd
I want to separate the line to multiple lines for every 4 charactors.
the result should be
abcd
efgh
i hi
gh a
badd
ffdd
Thanks in... (5 Replies)
My variable is something like:
f="/Volumes/VERVE/MOOTON_CALL/01_shots/XX/xx0195/Projects/program/rs0195_v400001.aep"
I use ${f:63:6} to call "rs0195" as characters counted from the left, but it'd be so much easier to count from the right.
If ${f:95:10} counts from the left, what would... (2 Replies)
Discussion started by: scribling
2 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)