Sponsored Content
Top Forums Shell Programming and Scripting Count occurances of a character in a file Post 302153244 by matrixmadhan on Monday 24th of December 2007 04:52:30 AM
Old 12-24-2007
Quote:
Originally Posted by Shivdatta
Thanks buddy,

Can you explain me where the actual conting of string happens..
I am unable to understand the script
Extract each character and create an associative array which maps between the character and the count of character
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Find occurances of a directory and count

I am writing my first shell script to do the following: Find all occurrences of a directory from the pwd Delete the directory (which is a hidden directory) Provide feedback w/ the number of directories deleted The problems I am having are two-fold: The user may not have the appropriate... (2 Replies)
Discussion started by: stringman
2 Replies

2. Shell Programming and Scripting

count the number chracters occurances in a line

Hi Could anybody tell me how to count the number of occurances of a character within a LINE. actually i have a single line with words seperated with '+' chracter e.g. abc+def+ghj+jkl+asd i want to separte the words above. Please provide the necessary logic in the form of a SHELL... (6 Replies)
Discussion started by: skyineyes
6 Replies

3. UNIX for Dummies Questions & Answers

Count occurances in a file

Hi, I have a fixed width file in the following format Sr.No A.No Name 1 2 PPP 3 4 PPP 5 6 TTT 7 8 OOO 9 10 OOO 11 12 OOO The 3rd column starts at position 10 and ends at 15. I want to count the number of occurances of each Name and output to a file Example in the... (2 Replies)
Discussion started by: samit_9999
2 Replies

4. Shell Programming and Scripting

Merging lines based on occurances of a particular character in a file

Hi, Is there any way to merge two lines based on specific occurance of a character in a file. I am having a flat file which contains multiple records. Each row in the file should contain specified number of delimiter. For a particular row , if the delimiter count is not matched with... (2 Replies)
Discussion started by: mohan_tuty
2 Replies

5. Shell Programming and Scripting

Count occurances of X Y Z in a file in 1 go.

Hi. I need to count multiple occurrences of X Y Z in a file in 1 go. At the moment I have the following scripts: ssh readonly@$ServerIP 'YEAR=xx;DAY=xx;MONTH=xx;LMONTH=xx;for i in 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 \ 16 17 18 19 20 21 22 23; do cat... (13 Replies)
Discussion started by: msullivan
13 Replies

6. Shell Programming and Scripting

How to count number of occurances of string in a file?

Gurus, Need little guidance. I have A.txt and B.txt file. B.txt file contains Unique strings. Sample content of B.txt file for which i cut the fourth column uniquely and output directed to B.txt file And A.txt file contains the above string as a fourth column which is last column. So A.txt... (7 Replies)
Discussion started by: Shirisha
7 Replies

7. Shell Programming and Scripting

Replace multiple occurances of same character with a single character.

Hi all, Greetings, I have the following scenario, The contents of main file are like : Unix|||||forum|||||||||||||||is||||||the||best so||||||be|||||on||||||||||||||||||||||||||||||||||||||||||||it And i need the output in the following form: Unix=forum=is=the=best so=be=on=it ... (3 Replies)
Discussion started by: dipanchandra
3 Replies

8. Shell Programming and Scripting

Replace first 3 occurances of a character in a file for each line

Hi all, I am very new to unix - ksh. I want to replace some characters in a file with some other, but only for first three occurances for each line. For eg: the first 3 occurances character ']' has to be replaced with ',' in each line. Please help. thanks Sreejith (1 Reply)
Discussion started by: rsreejithmenon
1 Replies

9. Shell Programming and Scripting

Count the occurances of numbers

I have a file as shown below. I need to count the unique occurrences of numbers in the first and second column only if the third column is <= 10. Otherwise print the corresponding numbers as zero. Thanks in advance!:) 58 80 40.74 76 80 9.78 76 80 8 12 6 9 30 28 8.23 45 12 ... (13 Replies)
Discussion started by: andreaalex
13 Replies

10. UNIX for Beginners Questions & Answers

Grep pattern file and count occurances

Guys I am trying grep to read from pattern file and count occurances of each word. input is firstplace secondplace secondpot patternfile is place first second i want the following. 1-count number of times keywords in patternfile occurs in begining of each line in input file. so... (12 Replies)
Discussion started by: ahfze
12 Replies
CAT(1)							    BSD General Commands Manual 						    CAT(1)

NAME
cat -- concatenate and print files SYNOPSIS
cat [-beflnstuv] [-] [file ...] DESCRIPTION
The cat utility reads files sequentially, writing them to the standard output. The file operands are processed in command line order. A single dash represents the standard input, and may appear multiple times in the file list. The word ``concatenate'' is just a verbose synonym for ``catenate''. The options are as follows: -b Implies the -n option but doesn't number blank lines. -e Implies the -v option, and displays a dollar sign ('$') at the end of each line as well. -f Only attempt to display regular files. -l Set an exclusive advisory lock on the standard output file descriptor. This lock is set using fcntl(2) with the F_SETLKW command. If the output file is already locked, cat will block until the lock is acquired. -n Number the output lines, starting at 1. -s Squeeze multiple adjacent empty lines, causing the output to be single spaced. -t Implies the -v option, and displays tab characters as '^I' as well. -u The -u option guarantees that the output is unbuffered. -v Displays non-printing characters so they are visible. Control characters print as '^X' for control-X; the delete character (octal 0177) prints as '^?'. Non-ascii characters (with the high bit set) are printed as 'M-' (for meta) followed by the character for the low 7 bits. EXIT STATUS
The cat utility exits 0 on success, and >0 if an error occurs. EXAMPLES
The command: cat file1 will print the contents of file1 to the standard output. The command: cat file1 file2 > file3 will sequentially print the contents of file1 and file2 to the file file3, truncating file3 if it already exists. See the manual page for your shell (i.e., sh(1)) for more information on redirection. The command: cat file1 - file2 - file3 will print the contents of file1, print data it receives from the standard input until it receives an EOF ('^D') character, print the con- tents of file2, read and output contents of the standard input again, then finally output the contents of file3. Note that if the standard input referred to a file, the second dash on the command-line would have no effect, since the entire contents of the file would have already been read and printed by cat when it encountered the first '-' operand. SEE ALSO
head(1), hexdump(1), lpr(1), more(1), pr(1), tail(1), view(1), vis(1), fcntl(2) Rob Pike, "UNIX Style, or cat -v Considered Harmful", USENIX Summer Conference Proceedings, 1983. STANDARDS
The cat utility is expected to conform to the IEEE Std 1003.2-1992 (``POSIX.2'') specification. The flags [-belnstv] are extensions to the specification. HISTORY
A cat utility appeared in Version 1 AT&T UNIX. Dennis Ritchie designed and wrote the first man page. It appears to have been cat(1). BUGS
Because of the shell language mechanism used to perform output redirection, the command ``cat file1 file2 > file1'' will cause the original data in file1 to be destroyed! This is performed by the shell before cat is run. BSD
September 23, 2006 BSD
All times are GMT -4. The time now is 05:56 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy