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Top Forums Shell Programming and Scripting Extended replacing of nonspecific strings in text files [beware complicated !] Post 302527069 by pasc on Thursday 2nd of June 2011 09:13:49 AM
Old 06-02-2011
I just added something to the text file, please reread it,

It seems your understanding is correct,
when N-N-N-N-N is found it should be replaced and each found instance with the said up there.

that means:

first instance N-N-N-N-N replace with 1234
second instance N-N-N-N-N replace ALSO with 1234

third instance N-N-N-N-N replace with 5678
fourth instance N-N-N-N-N replace ALSO with 5678
and so forth...
 

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RPL(1)							    BSD General Commands Manual 						    RPL(1)

NAME
rpl -- replace strings in files SYNOPSIS
rpl [-LhiwbqvsRepfdt] [-xSUFFIX] <old_string> <new_string> <target_file ...> DESCRIPTION
Basic usage is to specify two strings and one or more filenames or directories on the command line. The first string is the string to replace, and the second string is the replacement string. -h, --help A short help text. -L, --license Show the license and exit. -xSUFFIX Search only files ending with SUFFIX, e.g. ``.txt''. May be specified multiple times. -i, --ignore-case Ignore the case of old_string. -w, --whole-words Make old_string match only on word boundaries. -b, --backup Move the original files to filename~ before replacing them. -q, --quiet Quiet mode. -v, --verbose Verbose mode. -s, --dry-run Simulation mode, no files are changed. -R, --recursive Recurse into subdirectories. -e, --escape Expand escape sequences in old_string and new_string. Examples of escape sequences are ' ' (new-line), ' ' (tab), 'x42' (hexadec- imal number 42), '33' (octal number 033). -p, --prompt Prompt for confirmation before replacing each file. -f, --force Ignore errors when trying to restore permissions and file ownership. -d, --keep-times Keep modification times when replacing files. -t, --use-tmpdir Use a temporary directory for storing temporary files, usually the value of the environment variable TMPDIR. The default is to put temporary files in the same directory as the file being modified. -a, --all Do not ignore files and directories starting with . IMPLEMENTATION NOTES
An effort has been made to make the program behave as much as the original rpl as necessary. Where it has been possible to make improve- ments, improvements have been made. This implementation lacks many of the bugs in the original. EXAMPLES
Replace all occurences of ``F'' (on word boundaries) with ``A'' in all text files under the grades/ directory: $ rpl -Rwd -x'.txt' 'F' 'A' grades/ SEE ALSO
find(1), sed(1). HISTORY
This program was written for Debian as a free replacement for the non-free rpl program by Joe Laffey. AUTHORS
Goran Weinholt <weinholt@debian.org>. Debian July 31, 2005 Debian
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