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Full Discussion: File Modification
Top Forums Shell Programming and Scripting File Modification Post 302598594 by mnmonu on Wednesday 15th of February 2012 01:13:49 AM
Old 02-15-2012
Quote:
Originally Posted by balajesuri
Code:
cat input.txt | tr -d '\n' | sed 's/~\(\"[0-9]\{4\}\)/~\n\1/g'

Hi balajesuri,

your script is correct, but if input file looking like
Quote:
"0001"~"name"~"bb"~"20.25"~"0010"
~""~"0002"~"name"~"dd"~"35.50"~"25"~
""~"0003"~"name"~"aa"~"21.3

5"~"0056"~""~
and output
Quote:
"0001"~"name"~"bb"~"20.25"~"0010"~""~
"0002"~"name"~"dd"~"35.50"~"25"~""~
"0003"~"name"~"aa"~"21.35"~"0056"~""~
then your script not execute properly

Last edited by mnmonu; 02-15-2012 at 03:23 AM..
 

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CAT(1)							      General Commands Manual							    CAT(1)

NAME
cat, read, nobs - catenate files SYNOPSIS
cat [ file ... ] read [ -m ] [ -n nline ] [ file ... ] nobs [ file ... ] DESCRIPTION
Cat reads each file in sequence and writes it on the standard output. Thus cat file prints a file and cat file1 file2 >file3 concatenates the first two files and places the result on the third. If no file is given, cat reads from the standard input. Output is buffered in blocks matching the input. Read copies to standard output exactly one line from the named file, default standard input. It is useful in interactive rc(1) scripts. The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines. Read always executes a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a- time data. It never reads any more data from the input than it prints to the output. Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them. It is useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window. SOURCE
/src/cmd/cat.c /src/cmd/read.c /bin/nobs SEE ALSO
cp(1) DIAGNOSTICS
Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines. BUGS
Beware of and which destroy input files before reading them. CAT(1)
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