05-12-2010
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hello All,
hope someone here can help me with this. I am a new unix system administrator on the HP-UX machine. Every night, our operators back up our file system using one tape but as of recently, our files have gotten bigger and it now requires 2 tapes for a complete backup. Since the operators... (3 Replies)
Discussion started by: sanjit
3 Replies
2. UNIX for Dummies Questions & Answers
No detail:confused: (4 Replies)
Discussion started by: HOUSCOUS
4 Replies
3. Shell Programming and Scripting
hi,
i am looking through the perl documentation in the man pages for the first time but I have looked at some other reference giudes before (at a glance) and remember that there is a find command used by perl can any one give me a structured example of that command and how it works and if possible... (2 Replies)
Discussion started by: moxxx68
2 Replies
4. Shell Programming and Scripting
Guys,
I need to find all the files ending with either dmp or dmp.Z. This command is giving me error.
@files =`find $path \(-name "*.dmp" -o -name "*.dmp.Z"\) -mtime +30`;
sh: 0403-057 Syntax error at line 1 : `(' is not expected.
Thanks in advance (4 Replies)
Discussion started by: MKNENI
4 Replies
5. Solaris
All,
I see that there are 2 nic card available . How can I know all the details about these 2 nic cards.
-rw-r--r-- 1 root root 10 Apr 16 15:00 hostname.bge0
-rw-r--r-- 1 root other 17 Apr 22 08:56 hostname.bge2
please let me know
thanks
-prasad (4 Replies)
Discussion started by: p4cldba
4 Replies
6. UNIX for Dummies Questions & Answers
how to use sed command to find and replace a directory
i have a file.. which contains lot of paths ...
for eg.. file contains..
/usr/kk/rr/12345/1
/usr/kk/rr/12345/2
/usr/kk/rr/12345/3
/usr/kk/rr/12345/4
/usr/kk/rr/12345/5
/usr/kk/rr/12345/6
/usr/kk/rr/12345/7... (1 Reply)
Discussion started by: wip_vasikaran
1 Replies
7. Shell Programming and Scripting
Hi
I have an oracle perl script running as cron job across multiple unix servers. The issue is the perl binary is found in multiple directories
I use in the start of the script ...
#!/usr/bin/perl
on some servers the script fails because /usr/bin/perl is not present. Is there a way i can... (4 Replies)
Discussion started by: PrasannaKS
4 Replies
8. Shell Programming and Scripting
Hi Friends,
Please help me to sort out this problem, I am running this in centos o/s and whenever I run this script I am getting "find: missing argument to `-exec' " but when I run the same code in the command line I didn't find any problem. I am using perl script to run this ... (2 Replies)
Discussion started by: ramkumarselvam
2 Replies
9. Red Hat
Dear all,
Please help me clarify why i cannot run command in /sbin directory (ex: /sbin/fdisk -l )!
I've checked permission on files which belong /sbin directory with execute permission. However, i still cannot run with normal user.
Sorry for my English.
thanks all, (5 Replies)
Discussion started by: all4cfa
5 Replies
10. Shell Programming and Scripting
i use the following command to find files that were recently updated within the last hour:
perl -MFile::Find -le' find { wanted => sub { -f and 3600 / 86400 >= -M and print $File::Find::name; } }, shift' /var/app/mydata/
this command works well.
however, it seems to also search directories... (1 Reply)
Discussion started by: SkySmart
1 Replies
LEARN ABOUT CENTOS
shell-quote
SHELL-QUOTE(1) User Contributed Perl Documentation SHELL-QUOTE(1)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)