I'm still not convinced you need eval, you're not using arrays correctly. If you can possibly avoid using eval, you'll be better off for it -- it's finicky and dangerous.
Quote:
Originally Posted by skippyV
So in script B if I just set an array to the input:
then the unwanted split occurs.
That's no spoon array, this is an array: myArray=( "$@" )
You can get its contents out splitting on index instead of spaces too: "${myArray[@]}"
It'd be nice if you show the half of the code that's sending your string, not just the half that's receiving it. Both need fixing; you shouldn't need to pass literal quotes into anything.
Last edited by Corona688; 09-15-2011 at 04:40 PM..
Hi,
I'm using an array that contains compiler FLAGS
that need to be executed either before ./configure
or after the main 'make' command.
example of array containing compiler flags.
-------------------------------------------------
FLAGS="CFLAGS=\"-arch x86_64 -g -Os -pipe... (7 Replies)
Server: IBM p770
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I have been trying this a lot of different ways and haven't found too much online. Here's what I've got so far:
j=0
declare -a first
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for i in "${zero}"
do
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... (4 Replies)
OK, I'm striving to abide by all the rules this time.
Here is a fragment of my windows10/cygwin64/bash script:
export BUPLOG=$(BackupRecords --log "$src")
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OK, I'm striving to abide by all the rules this time.
Here is a fragment of my windows10/cygwin64/bash script:
export BUPLOG=$(BackupRecords --log "$src")
robocopy $(BackupRecords -mrbd "$src" --path "$src") $(BackupRecords --appSwitches "$src") "$src" "$dst" $(BackupRecords --fileSwitches... (15 Replies)
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When I use a bash wrapper the target.txt gets created but the text files do not get copied. All the paths are the same, but not sure why... (2 Replies)
How to run several bash commands put in bash command line without needing and requiring a script file.
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OS : RHEL / Oracle Linux 6.8
In bash shell, how can I replace a character under the cursor with another character ?
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Discussion started by: kraljic
7 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)