08-30-2009
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi
I have a script that loops though lines of a file and reads each line in to a variable ($LINE).
I want to look at the line and split it into it's constituent parts.
e.g. a line might be "This is a string"
I want to then have variables set to each element thus:
A=This
B=is
C=a... (3 Replies)
Discussion started by: gazingdown
3 Replies
2. UNIX for Dummies Questions & Answers
I have gone through all the threads in the forum and tested out different things. I am trying to split a 3GB file into multiple files. Some files are even larger than this.
For example:
split -l 3000000 filename.txt
This is very slow and it splits the file with 3 million records in each... (10 Replies)
Discussion started by: madhunk
10 Replies
3. Shell Programming and Scripting
Hi,
I am new to scripting and need help splitting a string using space as the delimiter.
How can I do that?
I want the result to be stored in an Array.
I tried using
set -A arr $(echo $FILE)
echo $arr
The result of the above was ''.
Thanks. (2 Replies)
Discussion started by: newbie187
2 Replies
4. Shell Programming and Scripting
I need to split the string msu1_2
It should be generic for any string of the form msu<digits>_<digits>
so that i get $X =1 and $Y = 2
Please help
Thanks (5 Replies)
Discussion started by: asth
5 Replies
5. Shell Programming and Scripting
Hi,
if i use this code
awk '/String/{n++}{print > f n}' f=file input
I get "input" splited this way
file1
String
1515
1354
2356
file 2
String
4531
0345
5345 (3 Replies)
Discussion started by: aloctavodia
3 Replies
6. Shell Programming and Scripting
Hi
I am facing a problem in spitting a string.
Here is the string
--------------------
subject1=10;subject2=30;subject3=40;subjectcode=10001;...
Now, I want only marks not the subject code. (there can be 'n' subjects)
ie.
10
30
40
My doubt
----------
How do I... (5 Replies)
Discussion started by: jionnet
5 Replies
7. Shell Programming and Scripting
Hello;
I have a file consists of 4 columns separated by tab. The problem is the third fields. Some of the them are very long but can be split by the vertical bar "|". Also some of them do not contain the string "UniProt", but I could ignore it at this moment, and sort the file afterwards. Here is... (5 Replies)
Discussion started by: yifangt
5 Replies
8. Shell Programming and Scripting
here is what i want to achieve... consider a file contains below contents. the file size is large about 60mb
cat dump.sql
INSERT INTO `table1` (`id`, `action`, `date`, `descrip`, `lastModified`) VALUES (1,'Change','2011-05-05 00:00:00','Account Updated','2012-02-10... (10 Replies)
Discussion started by: vivek d r
10 Replies
9. Shell Programming and Scripting
Hi Experts.
I'm stuck with the below AWK code where i'm trying to move the records containing any special characters in the last field to a bad file.
awk -F, '{if ($NF ~ /^|^/) print >"goodfile";else print >"badfile"}' filename
sample data
1,abc,def,1234,A *
2,bed,dec,342,* A ... (6 Replies)
Discussion started by: shell_boy23
6 Replies
10. Shell Programming and Scripting
Hey guys, I've been trying to find an answer to this, and I've been reading up on awk as much as possible, but I'm at a loss at the moment.
I'll start off by saying I'm trying to learn, so forgive me if I ask questions about your answers.
Here is what I'm trying to accomplish. I have a long... (8 Replies)
Discussion started by: ShadowBlade72
8 Replies
MKSTR(1) BSD General Commands Manual MKSTR(1)
NAME
mkstr -- create an error message file by massaging C source
SYNOPSIS
mkstr [-] messagefile prefix file ...
DESCRIPTION
mkstr creates files containing error messages extracted from C source, and restructures the same C source, to use the created error message
file. The intent of mkstr was to reduce the size of large programs and reduce swapping (see BUGS section below).
mkstr processes each of the specified files, placing a restructured version of the input in a file whose name consists of the specified
prefix and the original name. A typical usage of mkstr is
mkstr pistrings xx *.c
This command causes all the error messages from the C source files in the current directory to be placed in the file pistrings and restruc-
tured copies of the sources to be placed in files whose names are prefixed with xx.
Options:
- Error messages are placed at the end of the specified message file for recompiling part of a large mkstr ed program.
mkstr finds error messages in the source by searching for the string `error("' in the input stream. Each time it occurs, the C string start-
ing at the '"' is stored in the message file followed by a null character and a new-line character; The new source is restructured with
lseek(2) pointers into the error message file for retrieval.
char efilname = "/usr/lib/pi_strings";
int efil = -1;
error(a1, a2, a3, a4)
{
char buf[256];
if (efil < 0) {
efil = open(efilname, 0);
if (efil < 0) {
oops:
perror(efilname);
exit 1 ;
}
}
if (lseek(efil, a1, 0) < 0 || read(efil, buf, 256) <= 0)
goto oops;
printf(buf, a2, a3, a4);
}
SEE ALSO
xstr(1), lseek(2)
HISTORY
mkstr appeared in 3.0BSD.
BUGS
mkstr was intended for the limited architecture of the PDP-11 family. Very few programs actually use it. It is not an efficient method, the
error messages should be stored in the program text.
BSD
June 6, 1993 BSD