try this:
If this outputs to the screen as expected (this does not update the file) then the inner 'i' (insert command) is working fine.
Next try:
If either gives an error then you may have to upgrade sed to get the use of the 'inline' flag (-i) or the insert command ('i\text') to be able to do this without writing to another file first and specifying a line number.
Hello,
I need to insert a line (like a header) as the first line of a very huge file (about 3 ml rows). I am able to do it with sed, but redirecting the output and creating a new file takes quite some time. I was wondering if there was a more efficient way of doing it?
Any help would be... (3 Replies)
folks,
In my working directory, there a multiple large files which only contain one line in the file. The line is too long to use "grep", so any help?
For example, if I want to find if these files contain a string like "93849", what command I should use?
Also, there is oder_id number... (1 Reply)
Hi,
I have a huge file of bibliographic records in some standard format.I need a script to do some repeatable task as follows:
1. Needs to create folders as the strings starts with "item_*" from the input file
2. Create a file "contents" in each folders having "license.txt(tab... (5 Replies)
hi all,
In an mp3 file , data is arranged in sequence of header and data ,how to retrieve data between two headers. Is the data between two headers fixed? because as per theory it says 1152 samples will be there , but dont knw how many bits one sample correspond to?
it would help if any c... (2 Replies)
I’m new to Linux script and not sure how to filter out bad records from huge flat files (over 1.3GB each). The delimiter is a semi colon “;”
Here is the sample of 5 lines in the file:
Name1;phone1;address1;city1;state1;zipcode1
Name2;phone2;address2;city2;state2;zipcode2;comment... (7 Replies)
Hi, Great minds, I have some files, in fact header files, of CTD profiler, I tried a lot C programming, could not get output as I was expected, because my programming skills are very poor, finally, joined unix forum with the hope that, I may get what I want, from you people,
Here I have attached... (17 Replies)
I'm trying to take mrt output and put it at the top of a file along with the date and time. I was able to do it at the bottom of the file with the following
printf "********** $(date) **********\n\n" >> $OUTPUT_PATH/$HOSTNAME
mtr -r -w -c 10 $HOSTADDRESS >> $OUTPUT_PATH/$HOSTNAME
printf... (2 Replies)
Optimization shell/awk script to aggregate (sum) for all the columns of Huge data file
File delimiter "|"
Need to have Sum of all columns, with column number : aggregation (summation) for each column
File not having the header
Like below -
Column 1 "Total
Column 2 : "Total
...
...... (2 Replies)
I have 2 large file (.dat) around 70 g, 12 columns but the data not sorted in both the files.. need your inputs in giving the best optimized method/command to achieve this and redirect the not macthing lines to the thrid file ( diff.dat)
File 1 - 15 columns
File 2 - 15 columns
Data is... (9 Replies)
Discussion started by: kartikirans
9 Replies
LEARN ABOUT OSF1
wscrl
curs_scroll(3) Library Functions Manual curs_scroll(3)NAME
curs_scroll, 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 );
LIBRARY
Curses Library (libcurses)
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
scrl, wscrl, scroll: XCURSES4.2
Refer to the standards(5) reference page for more information about industry standards and associated tags.
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 is scrolled at the same time.
The scrl and wscrl routines, for positive n, scroll the current or specified window up n lines (line i+n becomes line i); otherwise, these
routines scroll the window down n lines. This operation involves moving the lines in the window character-image structure. The routines do
not change the current cursor position.
For the scroll, scrl, and wscrl functions to work, the scrollok option must be enabled.
NOTES
The header file <curses.h> automatically includes the header file <stdio.h>.
Note that scrl may be a macro.
RETURN VALUES
All routines return the integer ERR upon failure and OK upon successful completion.
SEE ALSO
Functions: curses(3), curs_outopts(3)
Others: standards(5)curs_scroll(3)