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
GETC(3S) GETC(3S)
NAME
getc, getchar, fgetc, getw - get character or word from stream
SYNOPSIS
#include <stdio.h>
int getc(stream)
FILE *stream;
int getchar()
int fgetc(stream)
FILE *stream;
int getw(stream)
FILE *stream;
DESCRIPTION
Getc returns the next character from the named input stream.
Getchar() is identical to getc(stdin).
Fgetc behaves like getc, but is a genuine function, not a macro; it may be used to save object text.
Getw returns the next word from the named input stream. It returns the constant EOF upon end of file or error, but since that is a good
integer value, feof and ferror(3) should be used to check the success of getw. Getw assumes no special alignment in the file.
SEE ALSO
fopen(3), putc(3), gets(3), scanf(3), fread(3), ungetc(3)
DIAGNOSTICS
These functions return the integer constant EOF at end of file or upon read error.
A stop with message, `Reading bad file', means an attempt has been made to read from a stream that has not been opened for reading by
fopen.
BUGS
The end-of-file return from getchar is incompatible with that in UNIX editions 1-6.
Because it is implemented as a macro, getc treats a stream argument with side effects incorrectly. In particular, `getc(*f++);' doesn't
work sensibly.
GETC(3S)