You missing a strong quote at the beginning of your statement.
Actually that's a typo. Sorry. It doesn't work with strong quotes either.
---------- Post updated at 02:27 PM ---------- Previous update was at 01:18 PM ----------
Ok, it looks like it just wasn't working over SSH. What I was actually trying to do was have a little background app pull commands from a mysql database and run them, but something about the formatting must get changed when pulling the command that way, because it fails to run on some machines. I ended up just storing the command within the app and it seems to work fine.
Hi All
In a script, I want a user to enter 4 characters, these can be a mix of letters (uppercase and lowercase) and numbers.
In this example $var represents what the user has entered.
eg $var can be A9xZ, 3DDL, bbHp .........etc
I need to check that the user has only entered characters... (2 Replies)
Hi,
I have trouble with quotations of the M4 preprocessor.
I want to write a basic makro that removes all spaces and newlines at the end and at the beginning of a string.
I tried this:
define(`TRIM_END', `patsubst(`$1', `\(\\n\| \)*$', `')')
define(`TRIM', `patsubst(`TRIM_END(`$1')',... (0 Replies)
Can someone explain the following? I can use find on *.pm without quotes, but find on *.pl makes on error, I need quotes for the second version. What's up with that?
$find -name *.pm
./tieProxyStatus/Status.pm
$find -name *.pl
find: paths must precede expression
Usage: find
$find... (2 Replies)
hi guys, i have a question related to quoting but i am not sure how to formulate it...
lets say we want to simulate the following shell actions
cd ~/project-dir
ctags /home/work/folder1/*.sh /home/work/folder2/*.sh /home/work/folder3/*.sh
so i make the following script
buidtags.sh
... (2 Replies)
I can do this on the command line:
sqsh -S 192.168.x.x -o tmp -U user -P fakepass -D horizon -C "\
select second_id
from borrower
where btype like '%wsd%'
"
I can also just leave the SQL at the end intact on one line ....
... However, when I throw this in a script like:
$SQSH -o... (4 Replies)
Hi all,
i have a file that looks like:
one:two:three:four:five
six:seven:eight:nine:ten
and i'd like to quote the fourth column, getting:
one:two:three:"four":five
six:seven:eight:"nine":ten
i was thinking something like:
awk 'BEGIN{FS=":"}{print $1 FS $2 FS $3 FS \"$4\" FS $5}'... (5 Replies)
I am writing a bash script to automate the installation of web environment on a base install of Fedora. And I'm at the limit of my last nerve and my bash skills. My brain is screaming at me: "Give up and use perl", but I am trying to stick to bash since the script will modify the perl environment... (6 Replies)
Hi,
I have got a file comp_data containing the below data :
38232836|9302392|49
39203827|8203203,3933203|52
72832788|567,3245,2434324|100
This file can have many rows like shown above. I want the values separated by "," in second column(taking "|" as delimiter) to be in quotes. These... (2 Replies)
I am trying to write a BASH script that will prompt a user to enter a number of days, then calculate the date.
My problem is the date command uses single or double quotes. For Example..
date -d "7 days"
Here is an example of some same code I am trying to work through.
echo "when do you... (4 Replies)
Discussion started by: javajockey
4 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)