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Top Forums UNIX for Beginners Questions & Answers Using sed or awk to replace digits in files Post 303039450 by duke0001 on Saturday 5th of October 2019 12:23:39 PM
Old 10-05-2019
Scrutinizer:

Thanks for advice. I have tested with your input and command like this:
Code:
sed 's/[0-9]\{7\}/2019304/; s/[0-9]\{4\}\.[0-9]\{3\}/1910.304/' test_file1.txt

Then output is what I need.
Code:
/dw300/data/obe/2019304.L800JR.1910.304

At this time, replacement digits is manually entered. In real situation, I will use parameter for replacement digits.

Thanks a lot for your help. I would welcome other experts to comment on my command to see whether there are better ways to do this work.

Last edited by duke0001; 10-05-2019 at 04:46 PM..
 

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TR(1)							      General Commands Manual							     TR(1)

NAME
tr - translate characters SYNOPSIS
tr [ -cds ] [ string1 [ string2 ] ] DESCRIPTION
Tr copies the standard input to the standard output with substitution or deletion of selected characters (runes). Input characters found in string1 are mapped into the corresponding characters of string2. When string2 is short it is padded to the length of string1 by dupli- cating its last character. Any combination of the options -cds may be used: -c Complement string1: replace it with a lexicographically ordered list of all other characters. -d Delete from input all characters in string1. -s Squeeze repeated output characters that occur in string2 to single characters. In either string a noninitial sequence -x, where x is any character (possibly quoted), stands for a range of characters: a possibly empty sequence of codes running from the successor of the previous code up through the code for x. The character followed by 1, 2 or 3 octal digits stands for the character whose 16-bit value is given by those digits. The character sequence followed by 1, 2, 3, or 4 hexadecimal digits stands for the character whose 16-bit value is given by those digits. A followed by any other character stands for that character. EXAMPLES
Replace all upper-case ASCII letters by lower-case. tr A-Z a-z <mixed >lower Create a list of all the words in one per line in where a word is taken to be a maximal string of alphabetics. String2 is given as a quoted newline. tr -cs A-Za-z ' ' <file1 >file2 SOURCE
/src/cmd/tr.c SEE ALSO
sed(1) TR(1)
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