Shell script - entered input(1-40 bytes) needs to be converted exactly 40 bytes
hello,
suppose, entered input is of 1-40 bytes, i need it to be converted to 40 bytes exactly.
example: if i have entered my name anywhere between 1-40 i want it to be stored with 40 bytes exactly.
enter your name:
donald duck (this is of 11 bytes)
expected is as below - display 11 bytes entered and rest of the 29 bytes with blank space
donald duck____________________________(i refereed _ to blank space)
my shell script is something like below:
please help!
Last edited by Franklin52; 01-17-2013 at 03:11 AM..
Reason: Please use code tags for data and code samples
I'm looking to create a Korn Shell script that, if given a directory as an arg, will calc bytes used by all files in the given directory and display that info. If no command line arg is given the program is to calc and display the bytes used by all the files in the pwd.
Example output:
... (3 Replies)
Hi all,
Does anybody know or guide me on how to remove the first N bytes and the last N bytes from a binary file? Is there any AWK or SED or any command that I can use to achieve this?
Your help is greatly appreciated!!
Best Regards,
Naveen. (1 Reply)
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if ]
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Discussion started by: razolo13
1 Replies
LEARN ABOUT REDHAT
iconv
ICONV(3) Linux Programmer's Manual ICONV(3)NAME
iconv - perform character set conversion
SYNOPSIS
#include <iconv.h>
size_t iconv(iconv_t cd,
char **inbuf, size_t *inbytesleft,
char **outbuf, size_t *outbytesleft);
DESCRIPTION
The argument cd must be a conversion descriptor created using the function iconv_open.
The main case is when inbuf is not NULL and *inbuf is not NULL. In this case, the iconv function converts the multibyte sequence starting
at *inbuf to a multibyte sequence starting at *outbuf. At most *inbytesleft bytes, starting at *inbuf, will be read. At most *out-
bytesleft bytes, starting at *outbuf, will be written.
The iconv function converts one multibyte character at a time, and for each character conversion it increments *inbuf and decrements
*inbytesleft by the number of converted input bytes, it increments *outbuf and decrements *outbytesleft by the number of converted output
bytes, and it updates the conversion state contained in cd. The conversion can stop for four reasons:
1. An invalid multibyte sequence is encountered in the input. In this case it sets errno to EILSEQ and returns (size_t)(-1). *inbuf is left
pointing to the beginning of the invalid multibyte sequence.
2. The input byte sequence has been entirely converted, i.e. *inbytesleft has gone down to 0. In this case iconv returns the number of non-
reversible conversions performed during this call.
3. An incomplete multibyte sequence is encountered in the input, and the input byte sequence terminates after it. In this case it sets
errno to EINVAL and returns (size_t)(-1). *inbuf is left pointing to the beginning of the incomplete multibyte sequence.
4. The output buffer has no more room for the next converted character. In this case it sets errno to E2BIG and returns (size_t)(-1).
A different case is when inbuf is NULL or *inbuf is NULL, but outbuf is not NULL and *outbuf is not NULL. In this case, the iconv function
attempts to set cd's conversion state to the initial state and store a corresponding shift sequence at *outbuf. At most *outbytesleft
bytes, starting at *outbuf, will be written. If the output buffer has no more room for this reset sequence, it sets errno to E2BIG and
returns (size_t)(-1). Otherwise it increments *outbuf and decrements *outbytesleft by the number of bytes written.
A third case is when inbuf is NULL or *inbuf is NULL, and outbuf is NULL or *outbuf is NULL. In this case, the iconv function sets cd's
conversion state to the initial state.
RETURN VALUE
The iconv function returns the number of characters converted in a non-reversible way during this call; reversible conversions are not
counted. In case of error, it sets errno and returns (size_t)(-1).
ERRORS
The following errors can occur, among others:
E2BIG There is not sufficient room at *outbuf.
EILSEQ An invalid multibyte sequence has been encountered in the input.
EINVAL An incomplete multibyte sequence has been encountered in the input.
CONFORMING TO
UNIX98
SEE ALSO iconv_open(3), iconv_close(3)GNU 2001-11-15 ICONV(3)