Hi,
I am stuck with a problem here.
Suppose i have a variable which is assigned some string containing special charatcers. for eg:
$a="abcdef^bbwk#kdbcd@";
I have to remove the special characters using Perl. The text is assigned to the variable implicitly.
How to do it? (1 Reply)
I need to add "new lines" of text with special characters, to specific lines in the file. There are 3 modifications needed. Been testing 2 here without success.
#!/usr/bin/perl
use FileHandle;
$file=FileHandle->new;
$FILENAME="/opt/etc/usr/file.txt";
$file->open ("<$FILENAME") or die... (13 Replies)
I finally figured out how to remove a file or directory with special characters in the name. It's kind of rudimentary so I thought I would share it with everyone:
find .inum -exec rm -rf {} \; (7 Replies)
Hello all
I am getting data like
col1 | col2 | col3
asdafa | asdfasfa | asf*&^sgê
345./ |sdfasd23425^%^&^ | sdfsa23
êsfsfd | sf(* | sdfsasf
My requirement is like
I have to to read the file and remove all special characters and hex characters ranging form 00-1f from 1st column, remove %"'... (1 Reply)
My application generate file but it have special characters in these file.
I would like to clear special characters by vi editor and not use cat /dev/null > to_file
I try to remove characters manually, but I'm can not!
root@MyHost /tmp> ls -l puzzle.txt
-rw-r--r-- 1 root system ... (5 Replies)
Hi,
I have a "|" delimited file that is exported from a database.
There is one column in the file which has description/comments entered by some application user. It has "Control-M" character and "New Line" character in between the text.
Hence, when i export the data, this record with the new... (4 Replies)
Hi,
I need to create a test text file with the special characters \342\200\223 in it and to be able to use sed maybe to delete them
I tried doing it using vi by pressing CTRL-V and then typing 342 but it does not work. After pressing CTRL-V and typing 342 it seems to just insert the numbers... (1 Reply)
Hi Guys,
My requirement is to remove any invisible and special characters from the file like control M(carriage return) and alt numerics and it should not replace @#!$%
abc|xyz|acd¥£ó
adc|123| 12áí
Please help on this.
Thanks
Rakesh (1 Reply)
Hi Guys,
My requirement is to remove any invisible and special characters from the file like control M(carriage return) and alt numerics and it should not replace @#!$%
abc|xyz|acd¥£ó
adc|123| 12áí
Please help on this.
Thanks
Rakesh (1 Reply)
Discussion started by: rakeshp
1 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)