Ok, I'm sure this is a total newbie question, but I think I'm in the right place, no?
I'm trying to call a perl module from a cgi script - Mail::Sendmail - and my web host installed the module in a directory that doesn't seem to be accessible, at least not the way I'm trying. But I thought you... (1 Reply)
I need to write a script that can find a bad record (for example: there is date field colom but value provided in the file for this field is N/A) then script shoud searches this pattern and then insert the whole record into the bad file.
Example:
File1
Name designation dateOfJoining... (1 Reply)
I need to write a script that can find a bad record (for example: there is date field colom but value provided in the file for this field is N/A) then script shoud searches this pattern and then insert the whole record into the bad file.
Example:
File1
Name designation dateOfJoining... (2 Replies)
Hi All,
First of all thanks for reading this post.
In my application, I am trying to create a new message queue . I am attaching the code below.
mqd_t mqopen2(const char * pName,
unsigned long Flags,
long maxMsg,
long msgSz)
{... (15 Replies)
Hi All
I have a dedicated backup server running ubuntu 10.04, which has recently been rebuilt (same OS, just different h/w)
This is used to receive ufsdump output from a number of Solaris servers, using the following syntax:
ufsdump 1uf :/path/to/backup/file /fs/to/be/backed/up
This has... (1 Reply)
I have BIND 9.8.1-P1 cache only DNS server running in Solaris 10. I have upgraded the same from 9.6.1 to 9.8.1-P1. Now i am facing "file descriptor exceeds limit (4096/4096)" error frequently on the server.
Please help me on this issue! (1 Reply)
Hi ,
One of my zone went down and when i booted it up i could see the pool in degraded state with some check sum errors . we have brought the pool online after scrubbing. But few files are showing this error
Bad exchange descriptor
Please let me know how to remove these files (2 Replies)
Hi All,
we are having a file system error in one of our servers. The server failed to boot in usual user mode. Instead boot with single user mode and requesting to run a FSCK manually to repair the corrupted. see the below output.
Netra T2000, No Keyboard
Copyright 2008 Sun Microsystems,... (5 Replies)
I'm learning SED command. And while doing that i got to this place where i'm taking a copy of my existing file. The code i used is -
sed -n '/Storm/ w Storm.txt' books.txt
As expected, the file 'books.txt' is read , and lines with 'Storm' is put in to the new file 'Storm.txt'. However, it also... (4 Replies)
Discussion started by: justo
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)