10-01-2011
Thank you ahamed101, it worked great.
Where can I get more information on the use of the option -z and
[ -z "$choice" ]
display()
{}
I would like to learn more about this functions.
again a million thanks.
9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello there peeps:
There is a little piece of bash shell scripting problem i have, which i was hoping you could help me with.
#!/bin/bash
stored_word()
{
case $(( $$ % 8 )) in
0 ) echo "energy";;
1 ) echo "touch";;
2 ) echo "climbing";;
3 ) echo... (3 Replies)
Discussion started by: keyvan
3 Replies
2. Shell Programming and Scripting
Hi,
can anyone help me with my scrip please. I wanted do following tasks:
1. List all the directory
2. A STDIN to ask user to enter a directory name from listed directories
3. command to check if the directory exists( or a command to validate if the user entered a valid directory name)
... (2 Replies)
Discussion started by: eminjan
2 Replies
3. Shell Programming and Scripting
have this code but when i run it i get this error
./pulse: line 2: and here is the code
#!/bin/bash
if ;
then
pulseaudio -k;
fi
what am i doing wrong
thanks
Adam (5 Replies)
Discussion started by: ab52
5 Replies
4. Shell Programming and Scripting
Try to imagine a flag:
nnnnx
nnnxx
nnxxx
nxxxx
now imagine how it will output:
4 times the "n"and 1 times "x"
3 times "n"and" 2 times" x "
.. etc. ..
rhombus is the same only instead of "n" is there
gap "and " x "is a few times to form the correct shape
Can you help... (3 Replies)
Discussion started by: krcek12
3 Replies
5. Shell Programming and Scripting
p { margin-bottom: 0.08in; } This is just a portion of a script I'm writing on Linux nano script editor. When I run the script I get stuck on the ps -e | less command portion of the script:wall:. It displays all the process running but it does not allow me to move to the next line on the script.... (2 Replies)
Discussion started by: SANA4SPA
2 Replies
6. Shell Programming and Scripting
Hi Guys i have a <script?> that spits out the location of each printer using snpget
here is the code
for i in `sed -n '/Start Printer/,/End Printer/p' /hosts/blah/etc/dhcp/hosts.conf | awk '!/^#/ {print $2}' | egrep -v \... (2 Replies)
Discussion started by: ab52
2 Replies
7. Shell Programming and Scripting
same script:
1- i am using grep to find a string called: tinker panic 0 in a file /etc/ntp.conf
if the string is not there, i want to add the strings in /etc/ntp.conf file in the first line of the file. if not do nothing or exit.
2- also i want to add # in front of the following lines in... (0 Replies)
Discussion started by: lamoul
0 Replies
8. Homework & Coursework Questions
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
Try running 'phone4 xyz' and see what happens.
Modify your program so that if no matching name is found, an... (1 Reply)
Discussion started by: OmgHaxor
1 Replies
9. UNIX for Beginners Questions & Answers
Hi,
Whenever i try to open a file in any editor like vi, vim and nano i get this help.txt showing up in split screen without any key being pressed. This continues to pop up even when i close the help.txt. This behavior happens only when i am connected via putty. Is there a fix to this issue?
... (1 Reply)
Discussion started by: sunil0391
1 Replies
learn(1) General Commands Manual learn(1)
NAME
learn - Provides computer-aided instruction for the C shell
SYNOPSIS
learn [-directory] [subject] [lesson]
The learn command provides computer-aided instruction courses and practice in the use of Tru64 UNIX.
OPTIONS
Allows you to exercise a script in a nonstandard place.
DESCRIPTION
To get started, enter learn; if this is the first time that you are invoking the learn command, you are guided through a series of ques-
tions to determine what type of instruction you want to receive.
If you have used learn before and left your last session without completing a subject, the program uses information in $HOME/.learnrc to
start you up in the same place you left off.
To bypass questions, enter a subject or lesson. In order to enter a lesson, you must know the lesson number that you received in a previ-
ous learn command session. If you do not know the lesson number, enter the lesson number as a subject. The learn command searches for the
first lesson containing the subject you specified. If the lesson is a - (dash), learn prompts for each lesson; this is useful for debug-
ging.
You can specify the following subjects:
files editor vi morefiles macros eqn C
SUBCOMMANDS
There are a few special commands. The bye command terminates a learn session, and the where command tells you of your progress (where m
tells you more.) The again command redisplays the text of the lesson and again lesson lets you review lesson. The hint command prints the
last part of the lesson script used to evaluate a response, while hint m prints the entire lesson script. This is useful for debugging
lessons and might possibly give you an idea about what is expected.
EXAMPLES
To take the online lesson about files, enter: learn files
You are then prompted for further input.
FILES
Playpen directories. Start-up information.
SEE ALSO
Commands: csh(1), ex(1)
learn(1)