hi guys,
i wrote this script and it takes some fields from a file and puts it into three different arrays. The first array works just fine but when I try to use the second array (ARRAY1) all i get is a blank value on the screen..
this works fine..i get ARRAY[9] value on the screen just fine
this does not work..it shows me blank value on the output
echo ${ARRAY1[@]} shows all the elements just fine but echo ${ARRAY1[1]} shows a blank on the screen..
what is wrong here?
Suppose I assign these variables:
n=5
row=n
let col=n/2
val=17
let table$row=val
I want to print the last variable. How do I do that? I have tried:
echo ${table$row}
This is the error message:
ksh: ${table$row}: bad substitution (6 Replies)
:confused:
Is it possible to delete array elements dynamically.For instance,consider an array( a b c d ) ,now can i delete array (the third element 'c').So that the array becomes array(a b d)..
Thanks in advance!! (1 Reply)
Hi,
I am writing a bash shell script. I would like to execute a statement only if an array contains a specific value. For example:
array=(1 3 5 7)
I would like to execute the statement only if the value 3 is present in ${array}.
Thanks for any help,
Mike (1 Reply)
hi guys,
i have the following script and when i run it i get blank lines on the screen.. i am trying to display the contents of array var..
#!/usr/bin/bash
var=`awk 'NR>20&&NR<31' try.sum | awk '{print $4}'`
echo "${var}" (1 Reply)
hi i am using bash shell to perform some subraction. here is what i have:
i have a while loop and am using i as a counter.
diff= `expr ${ARRAY1} - ${ARRAY2}`
for example array1 has -0.7145 and array2 has -0.7041.
when i try the above command, i get expr: non-numeric argument. any... (6 Replies)
Hi all,
I have a file that contains many lines, but only a few are of my interest, so I'm cutting it with grep + awk, and the result I get is for example
line 0
line 1
line 2
line 3
line n
Now I want to store each line in an array "cell" so I can use it later calling to
${array},... (2 Replies)
I'm trying to write a script that moves data that's older than 2 weeks to a different place.
It works well, EXCEPT, that when the script hits a file within a directory inside the working directory, it will move it to the root of the destination directory instead of putting it in the correct... (1 Reply)
Recently i made a script for a project at molecular dynamics but am stuck at the last step.The thing i want to do is to ask the user to input the number of particles, then replace the bolded numbers at lines 9 and 17..
code
#!/bin/bash
#read number of particles
echo "insert the number of... (2 Replies)
I have the following code and for some reason when I call the program using
/home/tcdata/tatsh/trunk/hstmy/bin/bash/raytrac.bash --cmod=jcdint.cmod
I get
hasArgument =
hasArgument = true
Somehow the array element is returning even though I have not chosen the option.
... (41 Replies)
Hi everyone,
i have the following script.sh:
foo='lsusb | grep Webcam | cut -c16-18'
sudo /home/user/public/usbreset /dev/bus/usb/001/$foo
when i try to call this script from python using subprocess.call("script.sh", shell=True) it seems that only 'sudo /home/user/public/usbreset' is being... (6 Replies)
Discussion started by: hilfemir
6 Replies
LEARN ABOUT MOJAVE
scr_dump
curs_scr_dump(3X)curs_scr_dump(3X)NAME
scr_dump, scr_restore, scr_init, scr_set - read (write) a curses screen from (to) a file
SYNOPSIS
#include <curses.h>
int scr_dump(const char *filename);
int scr_restore(const char *filename);
int scr_init(const char *filename);
int scr_set(const char *filename);
DESCRIPTION
The scr_dump routine dumps the current contents of the virtual screen to the file filename.
The scr_restore routine sets the virtual screen to the contents of filename, which must have been written using scr_dump. The next call to
doupdate restores the screen to the way it looked in the dump file.
The scr_init routine reads in the contents of filename and uses them to initialize the curses data structures about what the terminal cur-
rently has on its screen. If the data is determined to be valid, curses bases its next update of the screen on this information rather
than clearing the screen and starting from scratch. scr_init is used after initscr or a system call to share the screen with another
process which has done a scr_dump after its endwin call. The data is declared invalid if the terminfo capabilities rmcup and nrrmc exist;
also if the terminal has been written to since the preceding scr_dump call.
The scr_set routine is a combination of scr_restore and scr_init. It tells the program that the information in filename is what is cur-
rently on the screen, and also what the program wants on the screen. This can be thought of as a screen inheritance function.
To read (write) a window from (to) a file, use the getwin and putwin routines [see curs_util(3X)].
RETURN VALUE
All routines return the integer ERR upon failure and OK upon success.
X/Open defines no error conditions. In this implementation, each will return an error if the file cannot be opened.
NOTES
Note that scr_init, scr_set, and scr_restore may be macros.
PORTABILITY
The XSI Curses standard, Issue 4, describes these functions (adding the const qualifiers).
The SVr4 docs merely say under scr_init that the dump data is also considered invalid "if the time-stamp of the tty is old" but do not de-
fine "old".
SEE ALSO curses(3X), curs_initscr(3X), curs_refresh(3X), curs_util(3X), system(3)curs_scr_dump(3X)