How to get the user input recursively until the user provides valid input
Hi,
Code:
echo "Enter file name of input file list along with absolute path : "
read inputFileList
if [ -f $inputFileList ]
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 then "file does not exist" is given and the program is done.
How to prompt the user for input continuously untill the user enters the proper file name with absolute path without exiting the program i.e. "Enter file name of input file list along with absolute path : " prompt should be given as long as the user gives a invalid filename.
Using a loop is one way. any other way or better ways? Thanks, Srini
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)
how do we read input from a user
e.g i want to ask a user to enter 6 sets of numbers
how do i control information from the user?
i have this.......
#!/bin/bash
echo "Please enter six numbers"
read number
echo $number >> file1
but this stops after the first number..how can i... (2 Replies)
Here is my script:
echo "var 1:"
read varone
echo "$varone"
When I run in via ksh the script runs successfully.
However when I run it via tcsh I get "varone: Undefine variable"
Does the name command not work with tcsh or do I need some additional modification? Is there a way to get... (1 Reply)
Hi everyone,
I cant seem to figure this out for the life of me. Basically, I have two arrays..
sub init {
use Getopt::Long;
use Data::Dumper;
my @selections = ();
my @valid_options = ( "vaild1", "valid2" );
GetOptions( "input=s" =>... (2 Replies)
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)
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)
How to check the user input to be valid using shell script?
The valid input is in the format like as follows.
1. It can only have r,w,x or a hyphen and nothing else.
2. ensure the r, w, x are in the correct order.
for example: rwxr-xr-x is a valid format.
Thanks (5 Replies)
The (longer) script that I am working on does something like this:
#!/bin/bash
while true
do
clear
sleep 1
shuf -i1-2 -n1
sleep .1
clear
echo "Press 1 if you saw a 1. Press 2 if you saw a 2."
read -s -n1 RESPONSE
done
If the user accidentally presses two... (1 Reply)
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)
I'm trying to use a bash script for a psych experiment that involves listening to sound files and responding. If I have something like the code below, how can I make sure that a key press is assigned to RESPONSE only after the second echo statement?
for i in 1 2 3; do
echo "Ready?"
sleep 2
... (10 Replies)
Discussion started by: darwin_886
10 Replies
LEARN ABOUT DEBIAN
osd_cat
XOSD(1) General Commands Manual XOSD(1)NAME
osd_cat - X on-screen file displayer
SYNOPSIS
osd_cat [OPTION] [FILE]...
osd_cat -b percentage|slider [OPTION]
DESCRIPTION
Display FILE, or standard input, on X screen.
-p, --pos=POS
This option tells osd_cat where to display the text. POS can be top, middle, or bottom. The default is top.
-o, --offset=OFFSET
This option specifies the offset from the top or bottom of screen the text is displayed. The default is 0.
-A, --align=ALIGN
This option tells osd_cat where to display the text. ALIGN can be left, right or center. The default is left.
-i, --indent=OFFSET
This option specifies the INDENT from the left of screen the text is displayed. The default is 0.
-f, --font=FONT
This option specifies the FONT to be used for displaying the text. The default is fixed.
-c, --color=COLOR
This option specifies the COLOR to be used for displaying the text. The default is red.
-d, --delay=TIME
This option specifies the number of seconds the text is displayed. The default is 5 seconds.
-l, --lines=LINES
This option specifies the number of LINES to scroll the display over. The default is 5.
-s, --shadow=OFFSET
This option specifies the OFFSET of the text shadow. The default is 0, which means no text shadow is created.
-S, --shadowcolour=COLOUR
This option specifies the COLOUR of the text shadow. The default is black.
-O, --outline=WIDTH
This option specifies the WIDTH of the text outline. The default is 0, which is no outline.
-u, --outlinecolour=COLOUR
This option specifies the COLOUR of the text outline. The default is black.
-a, --age[=SCROLL_AGE]
This option affects screen redrawing. If SCROLL_AGE seconds pass before a new line is ready (for example, you're reading from a
pipe), all lines are cleared at once instead of being scrolled off as new lines replace old lines. The default is 0.
When no SCROLL_AGE is explicitly given, the current value from DELAY is used.
-w, --wait
This option also affects screen redrawing. When there is data ready to be put on screen, this option will cause osd_cat to wait
until the display is clear. An alternative to scrolling.
-b, --barmode=TYPE
Lets you display a percentage or slider bar instead of just text. TYPE may be percentage or slider. In this mode no text is read
from any file, but the following options can be used:
-P, --percentage=PERCENTAGE
This option specified the position of the percentage / slider bar. PERCENTAGE may be in the range from 0 to 100, the default is 50.
-T, --text=TEXT
This option specifies an optional TEXT which gets displayed above the percentage bar. The default is empty, so no additional text
is displayed.
-h, --help
display help (which is often more up to date) and exit
With no FILE, or when FILE is -, read standard input.
AUTHOR
Martijn van de Streek <martijn@foodfight.org>, Some patching done by Malcolm Valentine <farkit@iprimus.com.au> and Tim Wright
<tim@ignavus.net>.
xosd was written by Andre Renaud <andre@ignavus.net> and is maintained by Tim Wright <tim@ignavus.net>
SEE ALSO
More information on the X OSD Library and its author can be found on http://www.ignavus.net/software.html
<http://www.ignavus.net/software.html>
COPYRIGHT
It is distributed under the GNU General Public License.
X OSD cat January 2001 XOSD(1)