I am searching some rather large text files using grep and or awk.
What I would like to know is if there is a way (either with grep, awk, or realy any other unix tool) to stop the search when a predifined number of results are returned.
I would like to do this for speed purpuses. When i get... (6 Replies)
Hi,
I have a question here that need to get advise from all of you. Let say I have a set of data
12347777
12359899
12347677
12360090
12347688
12359979
12359009
12367022
12346677
I need to count the number that appear in each numbering ranges and the output is like below:
Prefix ... (5 Replies)
I want to display "no results found" if a grep search of a name that the user inputs is not found anywhere in a certain file,
Right now I have this, but doesn't seem to work. Im not sure what to change.
read name
results=grep -c $name file
if ;
then echo "No results found."
exit... (1 Reply)
I have a file with contents similar to this.
abcd
1234
4567
7666
jdjdjd
89289
9382
92
jksdj
9823
298
I want to write a shell script which count the number of lines that start with the number (disregard the lines starting with alphabets) (1 Reply)
Hi guys
i must write a program which read logfile of my program and print the result.
i wrote this and i want print of the user who have virus.
i extract user and put it in file, now i want know each user have how many virus.
how can i do this in bash, my file is like:
and soso
i... (5 Replies)
Hi experts a have a very large file and I need to add two columns: the first one numbering the incidence of records and the another with the total count
The input file:
21 2341 A
21 2341 A
21 2341 A
21 2341 C
21 2341 C
21 2341 C
21 2341 C
21 4567 A
21 4567 A
21 4567 C
... (6 Replies)
Hi All,
I need to get the count of records in the file, if the passing parameter matches with the list of records in the file. Below is my example
source file: Test1.dat
20120913
20120913
20120912
20120912
20120912
20120912
20120912
20120913
20120913
20120912
In my script I am... (5 Replies)
Hello,
I try to sort results of occurences in an array by using awk but I can't find the right command. that's why I'm asking your help ! :)
Please see below the command that I run:
awk '{ for ( i=1; i<=length; i++ ) arr++ }END{ for ( i in arr ) { print i, arr } }' dictionnary.txt
... (3 Replies)
Hi
I wanted to know if there is an option in grep command to show the number of results (not the number of lines of findings).
Thanks (14 Replies)
Discussion started by: abdossamad2003
14 Replies
LEARN ABOUT OSX
wordexp
WORDEXP(3) BSD Library Functions Manual WORDEXP(3)NAME
wordexp -- perform shell-style word expansions
SYNOPSIS
#include <wordexp.h>
int
wordexp(const char *restrict words, wordexp_t *restrict pwordexp, int flags);
void
wordfree(wordexp_t *pwordexp);
DESCRIPTION
The wordexp() function performs shell-style word expansion on words. It places the list of words into the we_wordv member of pwordexp and
the number of words into we_wordc.
The flags argument (see BUGS) is the bitwise inclusive OR of any of the following constants:
WRDE_APPEND Append the words to those generated by a previous call to wordexp().
WRDE_DOOFS As many NULL pointers as are specified by the we_offs member of pwordexp are added to the front of we_wordv.
WRDE_NOCMD Disallow command substitution in words. See the note in BUGS before using this.
WRDE_REUSE The pwordexp argument was passed to a previous successful call to wordexp() but has not been passed to wordfree(). The imple-
mentation may reuse the space allocated to it.
WRDE_SHOWERR Do not redirect shell error messages to /dev/null.
WRDE_UNDEF Report error on an attempt to expand an undefined shell variable.
The wordexp_t structure is defined in <wordexp.h> as:
typedef struct {
size_t we_wordc; /* count of words matched */
char **we_wordv; /* pointer to list of words */
size_t we_offs; /* slots to reserve in we_wordv */
} wordexp_t;
The wordfree() function frees the memory allocated by wordexp().
RETURN VALUES
The wordexp() function returns zero if successful, otherwise it returns one of the following error codes:
WRDE_BADCHAR The words argument contains one of the following unquoted characters: <newline>, '|', '&', ';', '<', '>', '(', ')', '{', '}'.
WRDE_BADVAL An attempt was made to expand an undefined shell variable and WRDE_UNDEF is set in flags.
WRDE_CMDSUB An attempt was made to use command substitution and WRDE_NOCMD is set in flags.
WRDE_NOSPACE Not enough memory to store the result.
WRDE_SYNTAX Shell syntax error in words.
The wordfree() function returns no value.
EXAMPLES
Invoke the editor on all .c files in the current directory and /etc/motd (error checking omitted):
wordexp_t pwordexp;
wordexp("${EDITOR:-vi} *.c /etc/motd", &pwordexp, 0);
execvp(pwordexp->we_wordv[0], pwordexp->we_wordv);
SEE ALSO sh(1), fnmatch(3), glob(3), popen(3), system(3)BUGS
This version of wordexp() ignores the value of the flags argument.
COPYRIGHT
Copyright 1995-2002 University Corporation for Atmospheric Research/Unidata
Portions of this software were developed by the Unidata Program at the University Corporation for Atmospheric Research.
BSD December 27, 2002 BSD