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Top Forums Shell Programming and Scripting sed - remove begin of line up to the third and including occurence of character Post 302939351 by Don Cragun on Tuesday 24th of March 2015 11:29:59 PM
Old 03-25-2015
You could also try something like:
Code:
#!/bin/ksh
for delim in 'X' '$' ' ' '[' ']' '/'
do	printf "Using '%s' as delimiter...\n" "$delim"
	sed "s/[$delim][^$delim]*[$delim][^$delim]*[$delim]//" file
done

which should work with any sed and any delimiter character. (However, some versions of sed will fail with this if your delimiter is a multibyte character.)

With the input file file containing:
Code:
1 $ 2 $ 3 $ 4 $ 5 $ 6 $ 7
a X b X c X d X e X f X g
[A][B][C][D][E][F][G]
1/2/3/4/5/6/7

it produces the output:
Code:
Using 'X' as delimiter...
1 $ 2 $ 3 $ 4 $ 5 $ 6 $ 7
a  d X e X f X g
[A][B][C][D][E][F][G]
1/2/3/4/5/6/7
Using '$' as delimiter...
1  4 $ 5 $ 6 $ 7
a X b X c X d X e X f X g
[A][B][C][D][E][F][G]
1/2/3/4/5/6/7
Using ' ' as delimiter...
1$ 3 $ 4 $ 5 $ 6 $ 7
aX c X d X e X f X g
[A][B][C][D][E][F][G]
1/2/3/4/5/6/7
Using '[' as delimiter...
1 $ 2 $ 3 $ 4 $ 5 $ 6 $ 7
a X b X c X d X e X f X g
C][D][E][F][G]
1/2/3/4/5/6/7
Using ']' as delimiter...
1 $ 2 $ 3 $ 4 $ 5 $ 6 $ 7
a X b X c X d X e X f X g
[A[D][E][F][G]
1/2/3/4/5/6/7
Using '/' as delimiter...
1 $ 2 $ 3 $ 4 $ 5 $ 6 $ 7
a X b X c X d X e X f X g
[A][B][C][D][E][F][G]
14/5/6/7

 

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CUT(1)							      General Commands Manual							    CUT(1)

NAME
cut - select out columns of a file SYNOPSIS
cut [ -b | -c] list [file...] cut -f list [-d delim] [ -s] OPTIONS
-b Cut specified bytes -c Select out specific characters -d Change the column delimiter to delim -f Select out specific fields that are separated by the -i Runs of delimiters count as one -s Suppres lines with no delimiter characters, when used EXAMPLES
cut -f 2 file # Extract field 2 cut -c 1-2,5 file # Extract character columns 1, 2, and 5 cut -c 1-5,7- file # Extract all columns except 6 DESCRIPTION
[file...]" delimiter character ( see delim)" with the -f option. Lines with no delimiters are passwd through untouched" Cut extracts one or more fields or columns from a file and writes them on standard output. If the -f flag is used, the fields are sepa- rated by a delimiter character, normally a tab, but can be changed using the -d flag. If the -c flag is used, specific columns can be specified. The list can be comma or BLANK separated. The -f and -c flags are mutually exclusive. Note: The POSIX1003.2 standard requires the option -b to cut out specific bytes in a file. It is intended for systems with multi byte characters (e.g. kanji), since MINIX uses only one byte characters, this option is equivalent to -c. For the same reason, the option -n has no effect and is not listed in this man- ual page. SEE ALSO
sed(1), awk(9). CUT(1)
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