02-25-2013
How-To Trim user input
Hi,
The user inputs either "/tmp/bea" or "/tmp/bea/". Regardless my script should extract and store in a variable the last directory in the user input path.
Desired output: "bea"
Please help.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I am trying to create a shell (ksh) which has two "read" commands, one which reads a line from a file and another which is inside a loop that reads user input from a keyboard. However, the "read" command inside the loop uses the input from the file and it does not get the user input from keyboard.... (3 Replies)
Discussion started by: stevefox
3 Replies
2. Shell Programming and Scripting
Using the following I'm trying to print the user's response to the prompt Y / N but I get nothing other than the contents of $1?
awk '{
printf($1 " ? (Y/N)")
getline myresponse < "-"
system("read myresponse")
if (myresponse == "Y")
{ print $1... (17 Replies)
Discussion started by: gefa
17 Replies
3. UNIX for Dummies Questions & Answers
how would i accept user input from the keyboard? (2 Replies)
Discussion started by: JamieMurry
2 Replies
4. Shell Programming and Scripting
I have 2 Servers IP:
1)10.1.1.27
2)10.1.2.27
#more /etc/postfix/transport
Domain.com smtp:ServerIP
Now i want to change the smtp:ServerIP according to user interaction: (2 Replies)
Discussion started by: telnor
2 Replies
5. Shell Programming and Scripting
Please tell me how to write a perl script that asks the user to enter words and that passes them to a variable.
In bash, the "read" command would achieve such user interaction.
#!/bin/bash
read -p "Enter files: " vFiles
However, I am looking for perl version of something equivalent... (2 Replies)
Discussion started by: LessNux
2 Replies
6. Shell Programming and Scripting
Hi,
echo "Enter file name of input file list along with absolute path : "
read inputFileList
if
then
for string in `cat inputFileList`
do
echo $string
done
else
echo " file does not exist"
fi
From the above code, if the user enters a invalid file... (1 Reply)
Discussion started by: i.srini89
1 Replies
7. Shell Programming and Scripting
i have a script which takes input from user, if user gives either Y/y then it should continue, else it should quit by displaying user cancelled.
#!/bin/sh
echo " Enter your choice to continue y/Y OR n/N to quit "
read A
if
then
echo " user requested to continue "
##some commands... (7 Replies)
Discussion started by: only4satish
7 Replies
8. Shell Programming and Scripting
Hi,
I need my script to check if the user enters 3 values if not 5 values to my script and alert if the input has any other number of values.
for example:
./myscript.sh 22 56 3221 - > correct
./myscript.sh 22 56 3221 45 777 -> correct
./myscript.sh 22 56 3221 45 -> incorrect
Please... (6 Replies)
Discussion started by: mohtashims
6 Replies
9. Shell Programming and Scripting
I still cannot figure out how to get this read command to work. I want the script to ask questions when prompted, and the user to enter a response. Based on response it will continue or exit. I have not worked with this type of script before so I am almost clueless on what to do, and so far google... (6 Replies)
Discussion started by: bigbenn
6 Replies
10. Shell Programming and Scripting
I am trying to allow a user to enter in text and then store that text in a variable $gene to run in an awk command in which those values are used to run some calculations. I am getting syntax errors however, when I try. Thank you :).
The awk runs great if it is a pre-defined file that is used,... (7 Replies)
Discussion started by: cmccabe
7 Replies
chroot(1M) System Administration Commands chroot(1M)
NAME
chroot - change root directory for a command
SYNOPSIS
/usr/sbin/chroot newroot command
DESCRIPTION
The chroot utility causes command to be executed relative to newroot. The meaning of any initial slashes (/) in the path names is changed
to newroot for command and any of its child processes. Upon execution, the initial working directory is newroot.
Notice that redirecting the output of command to a file,
chroot newroot command >x
will create the file x relative to the original root of command, not the new one.
The new root path name is always relative to the current root. Even if a chroot is currently in effect, the newroot argument is relative to
the current root of the running process.
This command can be run only by the super-user.
RETURN VALUES
The exit status of chroot is the return value of command.
EXAMPLES
Example 1: Using the chroot Utility
The chroot utility provides an easy way to extract tar files (see tar(1)) written with absolute filenames to a different location. It is
necessary to copy the shared libraries used by tar (see ldd(1)) to the newroot filesystem.
example# mkdir /tmp/lib; cd /lib
example# cp ld.so.1 libc.so.1 libcmd.so.1 libdl.so.1 libsec.so.1 /tmp/lib
example# cp /usr/bin/tar /tmp
example# dd if=/dev/rmt/0 | chroot /tmp tar xvf -
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
cd(1), tar(1), chroot(2), ttyname(3C), attributes(5)
NOTES
Exercise extreme caution when referencing device files in the new root file system.
References by routines such as ttyname(3C) to stdin, stdout, and stderr will find that the device associated with the file descriptor is
unknown after chroot is run.
SunOS 5.10 15 Dec 2003 chroot(1M)