I want to find the number of occurences of a character in a file.
How do i do it.
Eg:
$cat file1.txt
Welcome to World of Unix.
$
If i want to find the occurences of 'o' then I should be getting 3.
Thanks. (6 Replies)
Can someone help me to write a script / command to read in a file, character by character, replace any unknown ASCII characters with space. then write out the file to a new filename/
Thanks! (1 Reply)
I already have accomplished this task using sed and arrays, but since I get the variable using awk, I figured I'd ask this question and maybe I can get a cleaner solution using strictly awk.. I just can't quite grasp it in awk.
Story: I'm automating the (re)configuration of network interfaces,... (3 Replies)
Hi All,
Was wondering how I can do the following....
I have a String as follows
"ACCTRL000005022RRWDKKEEDKDD...."
This string can be in a file called tail.out or in a Variable called $VAR2
Now I have another variable called $VAR1="000004785" (9 bytes long), I need the content of... (5 Replies)
Hi,
I am trying to convert multiple Unix pipe symbol or bar into single |. I have tried with the following sed statements, but, no success :(. I need it using sed only
echo "sed 's/\|\+/\|/g'
sed 's/*/\|/'
sed 's/\|*/|/'
sed -r 's/\|+/\|/'
However, the below awk code is working fine.... (4 Replies)
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)
This is for AIX 6.1, I've a flat file and the format is like this
DECLARE
some statements;
BEGIN
some statements;
END;
I've to search BEGIN and replace it with the following 4 lines
BEGIN
For x in 1..1
LOOP
BEGIN
Similarly I've to search END and replace it with the... (7 Replies)
hello
i have file with 100k records and each one has certain value that starts at 28th column and certain value that starts at 88th column
e.g. 1st file
<25>1234567 ..... <88> 8573785485
i have aditional file with values which are related to value that starts at 88th column of the... (1 Reply)
I have a csv dataset like this :
C,rs18768
G,rs13785
GA,rs1065
G,rs1801279
T,rs9274407
A,rs730012
I'm thinking of use like awk, sed to covert the dataset to this format: (if it's two character, then keep the same)
CC,rs18768
GG,rs13785
GA,rs1065
GG,rs1801279
TT,rs9274407... (7 Replies)
Discussion started by: nengcheng
7 Replies
LEARN ABOUT SUNOS
tr
tr(1B) SunOS/BSD Compatibility Package Commands tr(1B)NAME
tr - translate characters
SYNOPSIS
/usr/ucb/tr [-cds] [ string1 [string2]]
DESCRIPTION
The tr utility copies the standard input to the standard output with substitution or deletion of selected characters. The arguments string1
and string2 are considered sets of characters. Any input character found in string1 is mapped into the character in the corresponding posi-
tion within string2. When string2 is short, it is padded to the length of string1 by duplicating its last character.
In either string the notation:
a-b
denotes a range of characters from a to b in increasing ASCII order. The character , followed by 1, 2 or 3 octal digits stands for the
character whose ASCII code is given by those digits. As with the shell, the escape character , followed by any other character, escapes
any special meaning for that character.
OPTIONS
Any combination of the options -c, -d, or -s may be used:
-c Complement the set of characters in string1 with respect to the universe of characters whose ASCII codes are 01 through 0377
octal.
-d Delete all input characters in string1.
-s Squeeze all strings of repeated output characters that are in string2 to single characters.
EXAMPLES
Example 1: Creating a list of all the words in a filename
The following example creates a list of all the words in filename1, one per line, in filename2, where a word is taken to be a maximal
string of alphabetics. The second string is quoted to protect `' from the shell. 012 is the ASCII code for NEWLINE.
example% tr -cs A-Za-z '