03-09-2012
Quote:
I suspect the ability to turn off echo predates UNIX, even.
It certainly does.
9 More Discussions You Might Find Interesting
1. Solaris
I have SunOs 5.8. I need to change password using a unix shell script. I have tried to pipe the passwords to the passwd command but does not work. Pls provide a script to change passwds of a list of users using a shell script.
( I have also tried crypt() but did not work)
The flow of the... (2 Replies)
Discussion started by: tofani
2 Replies
2. UNIX for Dummies Questions & Answers
The local policy is set in our LAN so that passwords have to be 8 characters and contain a capital letter, a small letter and a special character. Is Unix able to restrict users passwords to certain lengths and characters. (1 Reply)
Discussion started by: wmosley2
1 Replies
3. UNIX for Advanced & Expert Users
How the unix is maintaining the password ?
How it does the encryption and how the passwords are stored in the system and where it is stored ?
How it is better when compared to other OS ? (1 Reply)
Discussion started by: nagalenoj
1 Replies
4. Shell Programming and Scripting
Hi
Most of the shell scripts I am dealing with have to connect to oracle database . The username password is stored in a environment file which sets the variables for username and password . Set user id do not work on AIX so users who will execute these scripts need to have read or execute... (5 Replies)
Discussion started by: clifford
5 Replies
5. Shell Programming and Scripting
We have almost 100+ Unix/Linux servers, on which I have account.
Does anybody have a batch script which can do the following :
- check if my password is correct
- change my password
We use SFTP/SSH on Linux. The solution should force reading of password from command line. ( Passwordless... (1 Reply)
Discussion started by: lucknowm
1 Replies
6. Cybersecurity
Hi,
By reporting the process status with ps, any Unix user will see the command line arguments
#ps -ef
UID PID PPID C STIME TTY TIME CMD
lsc 13837 13825 0 May 11 pts/17 0:01 -ksh
oracle 4698 6294 0 12:00:40 ? 0:00 sqlplus -s system/manager
appluser 4229 4062 0 12:00:03... (2 Replies)
Discussion started by: bhagirathi
2 Replies
7. Shell Programming and Scripting
Hi All ,
I need to call a script runscript_B.sh on server A, the runscript_B.sh script locating in server B.
The runscript_B.sh in calls another script runscript_A on server A itself.
it seend, i need to be connect from Server A to Server B using ssh.
I have tryed like this in... (3 Replies)
Discussion started by: koti_rama
3 Replies
8. AIX
Does anyone know when AIX started using /etc/security/passwd instead of /etc/passwd to store encrypted passwords? (1 Reply)
Discussion started by: Anne Neville
1 Replies
9. Shell Programming and Scripting
Hello Experts,
Need some direction on creating shell script for following environment:
We have about 20 people in the team working as Oracle DBA's (sysdba's and appdba's). Total Servers which is a mix of Unix and Linux are 200. We do not have Root user access on any of the servers and... (3 Replies)
Discussion started by: sha2402
3 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)