10-08-2010
Quote:
Originally Posted by
methyl
@jlliagre
This is verifiable fact.
You misunderstood my reply. I was more commenting the "but not ksh" part of your sentence. Bash has indeed a character by character read feature, but as far as I know isn't "raw" in the sense it cannot read or store binary data (specifically nulls) so wouldn't be suitable for the expected task.
Quote:
The O/P states that bash is still working. I picked up the bash "read" idea from the IBM website after googling the library filename (which we finally got accurately in post #15). Found a thread where they were responding to someone in a similar situation. Renaming this library is a technique to get certain software such as Apache running on AIX when a replacement library is installed further down the library search path. However you have to do things in precisely the right order or you are in a mess.
Unfortunately the promising thread petered out when that O/P rebooted the computer and an unrelated can of worms opened due to having two system discs at different releases of AIX with the wrong one as the default boot.
Can you post a link to that thread ?
Quote:
I picked on "ftp" and "rcp" as ideas because they were not on a list I found of dependencies for the high level library. This does not mean that it will work, but it is worth a try. Given access to the O/S we could find out what libraries each binary requires and look for a loophole.
Either they bundle libc (i.e. are statically linked) or they are dynamically linked and obviously need libc.a which itself demand libcrypt.a. The OP stated there was no statically linked executables on that AIX release. This lead me to conclude that way can't work (just like mounting a removable media fails).
Quote:
On the permissions front we won't need execute permissions but we could need world read.
May be. That depends on AIX implementation. On Solaris shared libraries are required to be executable, on Gnu/Linux, they aren't.
Quote:
Depends on what the default umask is in the first place.
If setting the x bit is required with AIX, the umask won't help. "umask" allows to remove bits that otherwise would have been set, not the other way around. A shell do not create executable files.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
what is a critical section?why multipleprocesses or multiplethreads cant be given a chance to access the critical section?
please explain me with an example.
thanks (3 Replies)
Discussion started by: compbug
3 Replies
2. Shell Programming and Scripting
We have a batch job which runs and checks for certain files on a server and retrieves them to our server.
But from last few hours the job is not running correctly.
It gives msg file now found when there are files present on the server..
Nothing has been changed.................. (1 Reply)
Discussion started by: shikhakaul
1 Replies
3. Shell Programming and Scripting
Hello everyone !
Please have a minute and see if you know how to script this
I have a file like this:
"create table ....
...
create index n112 on ...
...
create table ...
....
create index n113 on...
...
create table ...
create index n112 on ...! duplicate
... (1 Reply)
Discussion started by: sotoc79
1 Replies
4. Shell Programming and Scripting
hi all,
Please help me with rsync.
I configured rsync to preserve timestamps using the -a option.
When i renamed fileA to fileB on source machine I have to copies at the backup server.
The aim is to keep the most recent file.
fileA & fileB has same contents.
When i renamed fileB to... (2 Replies)
Discussion started by: coolatt
2 Replies
5. Red Hat
Hello,
I'm experimenting a problem on my rh server.
Red Hat Enterprise Linux AS release 3 (Taroon Update 8)
2.4.21-47.ELsmp #1 SMP i686 i686 i386 GNU/Linux
It started with a segmentation fault on
#id root
To resolve it, I've installed
coreutils-4.5.3-28.4.i386.rpm
But, I... (6 Replies)
Discussion started by: gogol_bordello
6 Replies
6. Solaris
Let's say someone accidentally renamed the lib directory in Solaris 8, and now they cannot get into the terminal or even rename the folder via file manager.What would one do? (37 Replies)
Discussion started by: jetjaguar
37 Replies
7. UNIX for Advanced & Expert Users
Hi,
I am using Ubuntu 8.04 64-bit (Hardy Heron LTS Desktop edition) OS on a 64-bit intel hardware (x86_64). I have wrongly renamed the /lib64/libdl-2.7.so shared library file and now hardly few commands are working. My Gnome UI display has gone and I could not establish any new connection via... (12 Replies)
Discussion started by: royalibrahim
12 Replies
8. Shell Programming and Scripting
Hi All,
I connected via rlogin in testing environment (ksh ) and placed an executable with -rwxr-xr-x permission.
eg: from my own unix box used : rlogin host -l user
But the exe was renamed by somebody. since it's only renaming none of the access time , modification time etc is altered.... (2 Replies)
Discussion started by: blackcat
2 Replies
9. Shell Programming and Scripting
Hi
Am trying to move a file from one name to another
When I do "ls" to check for the moved filename
I can see the file but when I try the same with a script am unable..
I think am doing some pretty silly error.. please help..
toMove=`ls | grep -E "partition.+"`
mv $toMove partition._org... (7 Replies)
Discussion started by: Priya Amaresh
7 Replies
10. Ubuntu
Hi...I'm new to Linux and was working on a home server. I have it operational with Samba Share as my NAS system. Unfortunately, while I was on Webmin I changed the Logical Volume Group Name and now I can't find the data I had saved on my Samba Server.
Can anyone help me recover those files?
... (0 Replies)
Discussion started by: pangil
0 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)
NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$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)