Hello,
Whenever I transfer files between machines, I find a garbage character (^M) being appended to the end of every line of the file.
Can you suggest a script wherein I can eliminate the garbage character.
I tried sed 's/^M//g' < filename > filename1
...but it doesn't work. Also, this... (4 Replies)
I am using following code to read myfile.ddl line by line. But the thing is it is printing lot of garbage which are the names of the files and directories in which myfile.ddl is present. Kindly refine the code so that only myfile.ddl contents are only read
LOGFILE="logfile.txt"... (4 Replies)
Hi all ,
I am new to HP-UX flavour of unix.
i am issuing simple "vi" comand on the command prompt it is showing me some garbage character in command prompt itself ..unreadable format.
I tried opening an existing file using the vi editor --and same thing
... (3 Replies)
Hi,
I am running a command "df -k" to check the HDD utilization i am getting some garbage values in output of the command.
Output coming
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c1t0d0s7 113197651... (0 Replies)
Hi Everyone,
The problem is that I am getting messages other than the script in the current log file. Ideally the script should contain only the messages that are redirected to the log file. How to remove these unwanted data from the log file. Please help if you have any idea how to remove the... (0 Replies)
Hi,
I wrote one shell script and I am calling 1 sql script inside shell script. When I am running the shell script, I am getting actual data as well as garbage data in the output file. Why the garbage is there in the log file. Please help if anybody having any ides.
Script:
-------
... (2 Replies)
I write a program to find a palindromic region in given sequences. but it dosen't seems to be run well. please give me your suggestions
INPUT: AGCTAGCTCGAAGGTAG
code is
here
#!/usr/bin/perl
#Palindromic sequence
print "enter the sequence:\n";
$rna = <STDIN>;
chomp $rna; ... (3 Replies)
I need to write a python script that will
look at the local gc logs.
6 sys=0.00, real=0.06 secs]
2019-06-05T07:43:12.029-0500: 1072696.494: 2791209K->1995953K(2796544K)] 2803355K->1995953K(4164608K), , 3.0299555 secs]
2019-06-05T07:43:17.149-0500: 1072701.614: 3334321K->2008193K(4167680K),... (1 Reply)
Discussion started by: xgringo
1 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)