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UNIX for Dummies Questions & Answers
counting the occurence of particular characters
Post 302179643 by Audra on Friday 28th of March 2008 08:53:48 AM
03-28-2008
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9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Dears,
I would like to count the number of "(" and ")" that occur in a file.
(syntax checking script). I tried to use "grep -c" and this works fine as long as there is only one character (for which I do a search) on a line.
Has anyone an idea how I can count the number of specific characters... (6 Replies)
Discussion started by: plelie2
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2. Shell Programming and Scripting
I have a .csv file that I would like to count on each line the occurences of the coma. Each line should have the same amount, but as an integrity check I would like to include in my script this count.
What is the best way of doing this? (3 Replies)
Discussion started by: dbrundrett
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3. Shell Programming and Scripting
I have a comma delimited file that roughly has 300 fields. Not all fields are populated.
This file is fed into another system, what I need to do is count the amount of characters in each field and give me an output similiar to this:
1 - 6,2 - 25
The first number is the field and the second... (2 Replies)
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4. UNIX for Dummies Questions & Answers
Hi,
I have the following data in a flat file:
abcd_efgh_ijkl_20080522.dat|20080602222508|1357
abcd_efgh_ijkl_20080522.dat|20080602222508|1357
abcd_efgh_ijkl_20080522.dat|20080602222508|1357
I need to check the no. of occurence of "|" (pipe) on each line and the output should look like below:... (4 Replies)
Discussion started by: hey_mak
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5. UNIX for Dummies Questions & Answers
In a file I have to count a particular word. like i need apache how many times.
I tried this
$ tr "\011" "\012\012"<foo1 | tr -cd "" |sort\uniq -c
but I got result like this
32 apache
18 dns
12 doctor
Please sugest me (4 Replies)
Discussion started by: pranabrana
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6. Shell Programming and Scripting
Hi All,
I need some help in counting the number of letters in a big file with separations.
Following is the file I have
>AB_1
MLKKPIIIGVTGGSGGGKTSVSRAILDSFPNARIAMIQHDSYYKDQSHMSFEERVKTNYDHPLAFDTDFM
IQQLKELLAGRPVDIPIYDYKKHTRSNTTFRQDPQDVIIVEGILVLEDERLRDLMDIKLFVDTDDDIRII... (6 Replies)
Discussion started by: Lucky Ali
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7. Shell Programming and Scripting
Input:
ghw//yw/hw///??u
How can i count the slashes("/") using sed? (13 Replies)
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8. Shell Programming and Scripting
Ok say I wanted to count every Y in a data file.
Then set Y as my delimiter so that I can separate my file by taking all the contents that occur BEFORE the first Y and store them in a variable so that I may use this content later on in my program. Then I could do the same thing with the next Y's... (5 Replies)
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9. Shell Programming and Scripting
I do have a big file in the following format
>A1
ATGCGG
>A2
TCATGC
>A3
-TGCTG
The number of characters will be same under each subheader and only possible characters are A,T,G,C and -
I want to count the number of A's, T's,G's, C's & -'s vertically for all the positions so that I... (5 Replies)
Discussion started by: Lucky Ali
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LEARN ABOUT OPENDARWIN
gets
gets(n) Tcl Built-In Commands gets(n) __________________________________________________________________________________________________________________________________________________ NAME
gets - Read a line from a channel SYNOPSIS
gets channelId ?varName? _________________________________________________________________ DESCRIPTION
This command reads the next line from channelId, returns everything in the line up to (but not including) the end-of-line character(s), and discards the end-of-line character(s). ChannelId must be an identifier for an open channel such as the Tcl standard input channel (stdin), the return value from an invocation of | open or socket, or the result of a channel creation command provided by a Tcl extension. The channel must have been opened for input. If varName is omitted the line is returned as the result of the command. If varName is specified then the line is placed in the variable by that name and the return value is a count of the number of characters returned. If end of file occurs while scanning for an end of line, the command returns whatever input is available up to the end of file. If chan- nelId is in nonblocking mode and there is not a full line of input available, the command returns an empty string and does not consume any input. If varName is specified and an empty string is returned in varName because of end-of-file or because of insufficient data in non- blocking mode, then the return count is -1. Note that if varName is not specified then the end-of-file and no-full-line-available cases can produce the same results as if there were an input line consisting only of the end-of-line character(s). The eof and fblocked commands can be used to distinguish these three cases. SEE ALSO
file(n), eof(n), fblocked(n), Tcl_StandardChannels(3) KEYWORDS
blocking, channel, end of file, end of line, line, nonblocking, read Tcl 7.5 gets(n)