How to convert ^M appearing at end of line to unix newline?
As I have tried with ^M in 'tr' it replaced ^ to a newline.
Thanks in advance. (21 Replies)
Hi everybody,
I'm using Hp unix tru64.
I have generate one file from shell script.
bus that file content pre "8 space char" convert one tab character.
why?
result file hex format:
hex 20 20 20 20 20 to 09 (6 Replies)
hi,
I want to print the below lines
"Message from bac logistics
The Confirmation File has not been received."
When i give like this in the code
"Message from bac logistics\n The Confirmation File has not been received."
It is giving only
Message from bac logistics\n The... (9 Replies)
hi,
I have a for loop where in I write some file name to another file.
I want to write all the filenames to another without any newlines. how can i avoid getting new lines with echo?
Thanks,
Srilaxmi (2 Replies)
Hi,
I have a .txt file which has a tilde(~) in it.
All that I want is to break into a newline whenever there is an occurence of '~'.
I have tried SED to do that but I could not succeed.
I would appreciate if I can get a shell script(ksh) for this problem real quick.
Thanks in advance.
... (5 Replies)
I have a file (pema)with a single long record which i have to break up into multiple lines
Input
s1aaaaaaaaaaaaaaaaaaaaaaas1bbbbbbbbbbs1cccccccccc
Output
s1aaaaaaaaaaaaaaaaaaaaaaa
s1bbbbbbbbbb
s1cccccccccc
m planning to do it by replacing s1 by \ns1 \n is the new line character
i... (5 Replies)
Hi all..
I have a text file which looks like below:
abcd
efgh
ijkl
(blank space)
I need to remove only the last (blank space) from the file. When I try wc -l the file name,the number of lines coming is 3 only, however blank space is there in the file.
I have tried options like... (14 Replies)
I have variable that contains multiple values of number and also include overpunch(i.e. # $ % etc) character so we want to replace it with numbers.
here are the example:
Code:
11500#.0#
28575$.5$
527#.7#
42".2"
2794 .4
2279!.9!
1067&.7&
926#.6#
2279!.9!
885".5"
11714$.4$
27361'.1'... (1 Reply)
I have a file which comes every day and the file data look's as below.
Vi abc.txt
a|b|c|d\n
a|g|h|j\n
Some times we receive the file with only a new line character in the file like
vi abc.txt
\n (8 Replies)
Discussion started by: rak Kundra
8 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)