01-24-2005
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
hello,
i need an algorithm which reads a line specified to it in shortest possible time.
i am already using sed, i need a better way. please suggest me alternatives (2 Replies)
Discussion started by: rochitsharma
2 Replies
2. Shell Programming and Scripting
I know this is strictly a programming forum - but I consider vi a programming enabler and the question relates to regex you'd use with awk/sed anyway....
I have a file which is 50,000+ lines long and need to change many many instances of
word_word_word
to be
word+word+word
where... (6 Replies)
Discussion started by: Brett Taylor
6 Replies
3. Shell Programming and Scripting
Hi,
Is it possible to read every 2 lines as single record, I have a file like below,
~CZK ~TSCHECHISCHE KRONE ~TSCHECH. REPUBLIK
Dec 1 2005 12:00AM~ 10.840000~
~DKK ~DAENISCHE KRONE ~DAENEMARK
Dec 2 2005 12:00AM~ ... (9 Replies)
Discussion started by: braindrain
9 Replies
4. Shell Programming and Scripting
Hi,
I should read one character at a fixed position from each line of the file. So how ??? should be substituted in the code below:
while read line ; do
single_char=`???`
echo "$single_char"
done < $input_file (8 Replies)
Discussion started by: arsii
8 Replies
5. Shell Programming and Scripting
Hi all,
Greetings,
I have the following scenario, The contents of main file are like :
Unix|||||forum|||||||||||||||is||||||the||best
so||||||be|||||on||||||||||||||||||||||||||||||||||||||||||||it
And i need the output in the following form:
Unix=forum=is=the=best
so=be=on=it
... (3 Replies)
Discussion started by: dipanchandra
3 Replies
6. UNIX for Dummies Questions & Answers
Hello every one and thanks in advance for the time you will take to think about my problem.
I would like to know if it's possible (in BASH) to read a text file character after character.
Exactly this is what I would like to do :
Txt file : ATGCAGTTCATTGCCAAA...... (~2.5 millions... (3 Replies)
Discussion started by: sluvah
3 Replies
7. Shell Programming and Scripting
Hi friend,
i have the following problem:
when i am writting the below command on the command prompt , its working.
while read -n 1 ch; do echo "$ch" ; echo "$ch" ; done<file_name.out.
but when i am executing it after saving it in a ksh file, its not working.
Please helppppppppp .. thankss... (18 Replies)
Discussion started by: neelmani
18 Replies
8. Shell Programming and Scripting
Hi All,
Below is a sample command that I can run without any problem in the command line.
Command Line
dtToday=`date +%Y%m%d`; ls -ltr ./filename_${dtToday}.txt
-rw-r--r-- 1 monuser oinstall 0 Jan 18 11:02 ./filename_20130118.txt
But once I put that command line in file (list.txt) and... (3 Replies)
Discussion started by: padi
3 Replies
9. Shell Programming and Scripting
Hi All,
I am trying to read a file character by character,
#!/bin/bash
while read -n1 char; do
echo -e "$char\c"
done < /home/shak/testprogram/words
Newyork is a very good city.
Newyorkisaverygoodcityforliving
I need to preserve the spaces as thats an... (3 Replies)
Discussion started by: Kingcobra
3 Replies
10. Shell Programming and Scripting
I have a csv dataset like this :
C,rs18768
G,rs13785
GA,rs1065
G,rs1801279
T,rs9274407
A,rs730012
I'm thinking of use like awk, sed to covert the dataset to this format: (if it's two character, then keep the same)
CC,rs18768
GG,rs13785
GA,rs1065
GG,rs1801279
TT,rs9274407... (7 Replies)
Discussion started by: nengcheng
7 Replies
GETCHAR(3P) POSIX Programmer's Manual GETCHAR(3P)
PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux implementation of this interface may differ (consult the correspond-
ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.
NAME
getchar - get a byte from a stdin stream
SYNOPSIS
#include <stdio.h>
int getchar(void);
DESCRIPTION
The getchar() function shall be equivalent to getc(stdin).
RETURN VALUE
Refer to fgetc().
ERRORS
Refer to fgetc().
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
If the integer value returned by getchar() is stored into a variable of type char and then compared against the integer constant EOF, the
comparison may never succeed, because sign-extension of a variable of type char on widening to integer is implementation-defined.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
getc(), the Base Definitions volume of IEEE Std 1003.1-2001, <stdio.h>
COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol-
ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE
and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained
online at http://www.opengroup.org/unix/online.html .
IEEE
/The Open Group 2003 GETCHAR(3P)