At work, when I issue:
lpr -P$PRINTER -h filename
the file always prints a line then does a vertical tab off that first line instead of starting the new line at left.
It does this with every file I've tried, and I can't find any options that are set that would make things print this way.
I... (2 Replies)
Hi,
I have a file that looks like this:
36-
9+
45-
43+
400-
700+
I want to put a space between the number and the -/+ sign. So the output file will look like this
36 -
9 +
45 -
43 +
400 -
700 + (3 Replies)
Hi
I am trying to retrieve values from a tab-delimited file.I am using
while read record
value=`echo $record | cut -f12`
done
Where 12 is the column no i want retieve and record is one line of the file.
But it is returning the full record.
Plz help (4 Replies)
hi people;
the similar topic is being opened in here and here but i have confused with following condition. so i wanted to open a seperate topic.
from my file.txt:...
...
...
110105-16:04:04 192.168.1.1 7.1j Port_NODE_MODEL_M_1_8 stopfile=/tmp/10544... (0 Replies)
Hi,
I have the following code:
LIST=`ls | grep '.sql$'`
echo $LIST
The above code will give me something like..
file1.sh file2.sh file3.sh file4.sh file5.sh
I want to display the values into rows using echo like...
file1.sh
file2.sh (5 Replies)
Hi,
I have small problem to print float value in the fallowing code
float Cx, W,f=250000, Cr=92.00,pi=3.14;
W=2*pi*f;
Cx = 1/W.Cr; //Cx value will be come around like 7.07E-9.
printf("capacitance value: %.10f",Cx);
I am trying to print Cx value using above code but it was not... (3 Replies)
I have a class
and want to print values in MOD using
L = new Layer* ;
How can I print the values in MOD using this object L???
class Layer
{
public :
Model* MODP;
Model* MODS; (1 Reply)
Hello!
I have a tab delimited file with values in three columns. Some values occur in all three columns, other values are present in only one or two columns. I would like to sort the file so that rows with no missing values come first, rows with one missing values come next, and rows with two... (9 Replies)
Hi All
I had requirement where I need to re-order columns in a file by using a control file.
here is the ctrl file
c1
c2
c3
source file
c3 | c1 | c2
a | b| c
I should create output file based on the ctrl file columns
o/p should look like this
c1 | c2 | c3
b| c|a
I wrote some... (9 Replies)
The awk below executes and produces the current output. it skips the header in row 1 and prints $4,$5,$6 and then adds the header row back.
The problem is that it keeps the tailing tab and prints it in front of $1. I could add a pipe to remove the tab, but is there a better way to do it with on... (7 Replies)
Discussion started by: cmccabe
7 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)