using for x in... is using values delimited by space, not newline, if you want to use your code as it is you must change the delimiter to newline:
EDIT: IFS seems to be space, tab or newline by default.
(thanks to this post:
Quote:
Originally Posted by Corona688
...
I'm sure there are better ways to achieve the result you want, but you wrote that you want to understand why it's not working as you expected.
Hi.
I have the script shown below. If I execute it form the command line it seems to work properly, but when I fun it using the unix "at" command
"at -m now < ./kill-at-job.sh"
It appears to hang. Below is the script, the input file, and the execution as reported in the e-mail from the "at"... (3 Replies)
Hi ,
I am currently using the while loop in bash shell, as follows.
while read line
do
echo $line
done < file.txt
However, i want to use the while loop on file.txt, which will read the file with 4 lines of gap.
Ex- if file.txt is a file of 100 lines, then i want to use the loop such... (3 Replies)
Hi guys i need help with comparing lines in 2 separate files. Both files contain the same amount of lines and i need to output the difference into the 2nd file.
The 1st file is always correct.
1st file (Expected.e):
Tuesday, 11 August 2009
Wednesday, 12 August 2009
Thursday, 13 August 2009... (2 Replies)
I am attempting to insert multiple lines of text into a specific place in a text file based on the lines above or below it.
For example, Here is a portion of a zone file.
IN NS ns1.domain.tld.
IN NS ns2.domain.tld.
IN ... (2 Replies)
I’m writing a bash shell script and I want to join lines together where two variables on each line are the same ie.
12345variablestuff43212morevariablestuff
12345variablestuff43212morevariablestuff
34657variablestuff78945morevariablestuff
34657variablestuff78945morevariablestuff... (12 Replies)
hello all
in my bash script I have a file and I only want to keep the lines that appear twice in the file.Is there a way to do this?
thanks in advance! (4 Replies)
I have a file that looks like this:
cat includes
CORP-CRASHTEST-BU
e:\crashplan\
CORP-TEST
/usr/openv/java
/usr/openv/logs
/usr/openv/man
CORP-LABS_TEST
/usr/openv/java
/usr/openv/logs
/usr/openv/man
What I want to do is make three new files with just those selections. So the three... (4 Replies)
I'm working on a new exercise that calls for a script that will take in two arguments on the command line (representing the range of line numbers) and will subsequently print those lines from a a specified file. Command line would look like this: ./lines_script.bash 5 15 <file.txt. The script would... (8 Replies)
BASH Gurus: Anyone know how to append continuous output command appending to a file, but limit that file to no more than 20 lines? The program I have running is simply monitoring my UDP port 53 for incoming packets endlessly. I just need to keep this file from going over 20 lines. Once the file... (3 Replies)
Morning ..
I have a file with approximately 1000 lines. I want to check that the file contains, for example, 100 lines.
Something like whats given below is ugly. And even if I create a function I have to call it 100 times.
I may need to look through multiple files at times.
Is there a... (4 Replies)
Discussion started by: sumguy
4 Replies
LEARN ABOUT DEBIAN
scroll
scroll(3NCURSES)scroll(3NCURSES)NAME
scroll, scrl, wscrl - scroll a curses window
SYNOPSIS
#include <curses.h>
int scroll(WINDOW *win);
int scrl(int n);
int wscrl(WINDOW *win, int n);
DESCRIPTION
The scroll routine scrolls the window up one line. This involves moving the lines in the window data structure. As an optimization, if
the scrolling region of the window is the entire screen, the physical screen may be scrolled at the same time.
For positive n, the scrl and wscrl routines scroll the window up n lines (line i+n becomes i); otherwise scroll the window down n lines.
This involves moving the lines in the window character image structure. The current cursor position is not changed.
For these functions to work, scrolling must be enabled via scrollok.
RETURN VALUE
These routines return ERR upon failure, and OK (SVr4 only specifies "an integer value other than ERR") upon successful completion.
X/Open defines no error conditions.
This implementation returns an error if the window pointer is null, or if scrolling is not enabled in the window, e.g., with scrollok.
NOTES
Note that scrl and scroll may be macros.
The SVr4 documentation says that the optimization of physically scrolling immediately if the scroll region is the entire screen "is" per-
formed, not "may be" performed. This implementation deliberately does not guarantee that this will occur, to leave open the possibility of
smarter optimization of multiple scroll actions on the next update.
Neither the SVr4 nor the XSI documentation specify whether the current attribute or current color-pair of blanks generated by the scroll
function is zeroed. Under this implementation it is.
PORTABILITY
The XSI Curses standard, Issue 4 describes these functions.
SEE ALSO ncurses(3NCURSES), outopts(3NCURSES)scroll(3NCURSES)