Generally, you don't specify token lengths.... yacc sees tokens, not strings. F/Lex sees strings and outputs tokens. So if you want tokens of specified length, do (in flex):
What's wrong with this part of my script?
I just want to put each column from a fixed length file into a variable so I can validate each field later in the script.
exec< myfile.dat
while read afile; do
a=`echo $(echo $afile |cut -c1-10)`
echo "$a"
b=`echo $(echo $afile |cut -c11-20)`... (12 Replies)
Is there a command that sets a variable length?
I have a input of a variable length field but my output for that field needs to be set to 32 char.
Is there such a command?
I am on a sun box running ksh
Thanks (2 Replies)
Hi ,
We have developed a grammer for our domain language using lex n yacc.
I want to know is there any pre defined lex-yacc function which gets call before executing any rule (or rules).
Oue requirement is, before processing any rule ,we want to perform some specific actions ?
is there... (0 Replies)
Hi, all.
I need to convert a file tab delimited/variable length file in AIX to a fixed lenght file delimited by spaces. This is the input file:
10200002<tab>US$ COM<tab>16/12/2008<tab>2,3775<tab>2,3783
19300978<tab>EURO<tab>16/12/2008<tab>3,28523<tab>3,28657
And this is the expected... (2 Replies)
Very, very new to unix scripting and have a unique situation. I have a file of records that contain 3 records types:
(H)eader Records
(D)etail Records
(T)railer Records
The Detail records are 82 bytes in length which is perfect. The Header and Trailer records sometimes are 82 bytes in... (3 Replies)
Hi,
Can anyone help with a effective solution ?
I need to change a variable length text field (between 1 - 18 characters) to a fixed length text of 18 characters with the unused portion, at the end, filled with spaces.
The text field is actually field 10 of a .csv file however I could cut... (7 Replies)
HPUX and posix shell
Hi all.
I have a record with fixed length fields....I would like to reorder the fields and preserver the fixed lengths....
cat test
4 960025460 Dept of Music
8 960025248 Dept of Music 12-08
cat... (3 Replies)
Hello Everyone,
I am stuck with one issue while working on abstract flat file which i have to use as input and load data to table.
Input Data-
------ ------------------------ ---- -----------------
WFI001 Xxxxxx Control Work Item A Number of Records
------ ------------------------... (5 Replies)
Hi Team,
I have an issue to split the file which is having special chracter(German Char) using awk command.
I have a different length records in a file. I am separating the files based on the length using awk command.
The command is working fine if the record is not having any... (7 Replies)
Discussion started by: Anthuvan
7 Replies
LEARN ABOUT BSD
strtok
STRTOK(3) Library Functions Manual STRTOK(3)NAME
strtok - string tokens
SYNOPSIS
#include <string.h>
char *
strtok(str, sep)
char *str;
char *sep;
DESCRIPTION
This interface is obsoleted by strsep(3).
The strtok() function is used to isolate sequential tokens in a null-terminated string, str . These tokens are separated in the string by
at least one of the characters in sep . The first time that strtok() is called, str should be specified; subsequent calls, wishing to
obtain further tokens from the same string, should pass a null pointer instead. The separator string, sep , must be supplied each time,
and may change between calls.
The strtok() function returns a pointer to the beginning of each subsequent token in the string, after replacing the token itself with a
NUL character. When no more tokens remain, a null pointer is returned.
SEE ALSO index(3), memchr(3), rindex(3), strchr(3), strcspn(3), strpbrk(3), strrchr(3), strsep(3), strspn(3), strstr(3
STANDARDS
The strtok() function conforms to ANSI C X3.159-1989 (``ANSI C'').
BUGS
There is no way to get tokens from multiple strings simultaneously.
The System V strtok(), if handed a string containing only delimiter characters, will not alter the next starting point, so that a call to
strtok() with a different (or empty) delimiter string may return a non-NULL value. Since this implementation always alters the next start-
ing point, such a sequence of calls would always return NULL.
4.4 Berkeley Distribution January 12, 1996 STRTOK(3)