simple sed question Post: 302113554

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Simple sed question

Is there an easier way to do the following: echo "|||||||" | sed 's/||/|0|/g; s/||/|0|/g' which would give the following |0|0|0|0|0|0| If it is not run twice it will not pick up the second occurance of the || and leave it empty as in echo "|||||||" | sed 's/||/|0|/g' which would give...

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Ok simple question for simple knowledge...

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Simple sed question.

I have a log output with a format similar to this: a=1, b= 2 c=0, d= 45, e=100 ... and so on. I figure I can just use awk or something to pipe the file to sed, but I'm trying to replace all the values above with 0. I've tried: cat blah | sed 's/=\(.*\),/0/'but that didn't work. ...

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simple sed question - replace from phrase to end of line

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Simple SED Question

I don't understand this command behavior. echo "abc" |sed 's/a/&_&/'

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 '12' <filename1>filename2

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWscpu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ed(1), ascii(5), attributes(5)

NOTES

       Will not handle ASCII NUL in string1 or string2. tr always deletes NUL from input.

SunOS 5.10							    26 Sep 1992 							    tr(1B)

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Ok simple question for simple knowledge...

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