Hi,
I am a beginner at shell scripting, though I have several years of Oracle programming experience. Can anyone recommend a site where I can find some exercises on shell programming. Is there anywhere I can telnet as I dont have UNIX OS on my PC?
Thanks
Rohit (1 Reply)
I have just 3 things that I really need to know the solution, please allow me to show it.
any help would be nice
script that backup a file. The file name to backup should be provided as input parameter, the backup file should have the same file name with the extension ".bak". If the user... (1 Reply)
Hi, all: I have a question about "cleaning up" a huge file with regular expression(s) and sed:
The init file goes like this:
block1,blah-blah-blah-blah,numseries1,numseries2,numseries3,numseries4
block2,blah-blah-blah-blah-blah,numseries,numseries2,numseries3,numseries4
...... (3 Replies)
I did an assignment for sh scripting back in november, and I found it quite fun learning. I would like to retain this knowledge as I'm pretty sure it was my only scripting assignment, from now on in my programming course we won't be doing any scripting apart from the typical makefile scripts. The... (6 Replies)
Hi
I used this command:
mplayer http://host/axis-cgi/mjpg/video.cgi -user root -passwd root \
-cache 1024 -fps 25.0 -nosound -vc ffh264 \
-demuxer 3 -dumpstream -dumpfile output.avi It's ok but...
Video Playing is very fast! Why? Is it a synch problem?
What parameter I have to use for... (1 Reply)
Hi ,
I would like to do some exercises/scripts in order to develop my skills in shell scripts,
can someone pass me some links/suggestions where i can find this?
Thanks a lot :) (3 Replies)
Hello;
I have this rather tricky problem to solve --(to me, anyways) ..
I am processing the following one liner with tcpdump..
tcpdump -i T3501 -A ether host 00:1e:49:29:fc:c9 or ether host 00:1b:2b:86:ec:1b or ether host 00:21:1c:98:a4:08 and net 149.83.6.0/24 | grep --line-buffered -B... (5 Replies)
I want to insert "Text" in each file as a place where I mentioned below "Insert Text Here". These files are something like news of newspaper. Generally, newspaper headlines contain one or two lines.
I don't know how it can be identified whether Text is inserted after first line or second line.
... (10 Replies)
Hello, so I'm taking unix in one of my classes and I've been having fun, but I got stuck at this one question that I'm supposed to know how to answer but I can't wrap my head around it, I figured I'll post it here and see if someone can shed some light into what I'm doing wrong.
Here's the... (1 Reply)
Discussion started by: hiwolf25
1 Replies
LEARN ABOUT MINIX
stdio
STDIO(3) Library Functions Manual STDIO(3)NAME
stdio - standard buffered input/output package
SYNOPSIS
#include <stdio.h>
FILE *stdin;
FILE *stdout;
FILE *stderr;
DESCRIPTION
The functions in the standard I/O library constitute a user-level buffering scheme. The in-line macros getc and putc(3) handle characters
quickly. The higher level routines gets, fgets, scanf, fscanf, fread, puts, fputs, printf, fprintf, fwrite all use getc and putc; they can
be freely intermixed.
A file with associated buffering is called a stream, and is declared to be a pointer to a defined type FILE. Fopen(3) creates certain
descriptive data for a stream and returns a pointer to designate the stream in all further transactions. There are three normally open
streams with constant pointers declared in the include file and associated with the standard open files:
stdin standard input file
stdout standard output file
stderr standard error file
A constant `pointer' NULL (0) designates no stream at all.
An integer constant EOF (-1) is returned upon end of file or error by integer functions that deal with streams.
Any routine that uses the standard input/output package must include the header file <stdio.h> of pertinent macro definitions. The func-
tions and constants mentioned in the standard I/O manual pages are declared in the include file and need no further declaration. The con-
stants, and the following `functions' are implemented as macros; redeclaration of these names is perilous: clearerr, getc, getchar, putc,
putchar, feof, ferror, fileno.
SEE ALSO open(2), close(2), read(2), write(2), fclose(3), ferror(3), fopen(3), fread(3), fseek(3), getc(3), gets(3), printf(3), putc(3), puts(3),
scanf(3), setbuf(3), ungetc(3).
DIAGNOSTICS
The value EOF is returned uniformly to indicate that a FILE pointer has not been initialized with fopen, input (output) has been attempted
on an output (input) stream, or a FILE pointer designates corrupt or otherwise unintelligible FILE data.
For purposes of efficiency, this implementation of the standard library has been changed to line buffer output to a terminal by default and
attempts to do this transparently by flushing the output whenever a read(2) from the standard input is necessary. This is almost always
transparent, but may cause confusion or malfunctioning of programs which use standard i/o routines but use read(2) themselves to read from
the standard input.
In cases where a large amount of computation is done after printing part of a line on an output terminal, it is necessary to fflush(3) the
standard output before going off and computing so that the output will appear.
BUGS
The standard buffered functions do not interact well with certain other library and system functions, especially fork and abort.
LIST OF FUNCTIONS
Name Appears on Page Description
clearerr ferror(3) stream status inquiries
fclose fclose(3) close or flush a stream
fdopen fopen(3) open a stream
feof ferror(3) stream status inquiries
ferror ferror(3) stream status inquiries
fflush fclose(3) close or flush a stream
fgetc getc(3) get character or word from stream
fgets gets(3) get a string from a stream
fileno ferror(3) stream status inquiries
fopen fopen(3) open a stream
fprintf printf(3) formatted output conversion
fputc putc(3) put character or word on a stream
fputs puts(3) put a string on a stream
fread fread(3) buffered binary input/output
freopen fopen(3) open a stream
fscanf scanf(3) formatted input conversion
fseek fseek(3) reposition a stream
ftell fseek(3) reposition a stream
fwrite fread(3) buffered binary input/output
getc getc(3) get character or word from stream
getchar getc(3) get character or word from stream
gets gets(3) get a string from a stream
getw getc(3) get character or word from stream
printf printf(3) formatted output conversion
putc putc(3) put character or word on a stream
putchar putc(3) put character or word on a stream
puts puts(3) put a string on a stream
putw putc(3) put character or word on a stream
rewind fseek(3) reposition a stream
scanf scanf(3) formatted input conversion
setbuf setbuf(3) assign buffering to a stream
setvbuf setbuf(3) assign buffering to a stream
snprintf printf(3) formatted output conversion
sprintf printf(3) formatted output conversion
sscanf scanf(3) formatted input conversion
ungetc ungetc(3) push character back into input stream
vfprintf printf(3) formatted output conversion
vfscanf scanf(3) formatted input conversion
vprintf printf(3) formatted output conversion
vscanf scanf(3) formatted input conversion
vsnprintf printf(3) formatted output conversion
vsprintf printf(3) formatted output conversion
vsscanf scanf(3) formatted input conversion
4th Berkeley Distribution May 13, 1986 STDIO(3)