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Full Discussion: sed or awk editing help
Top Forums Shell Programming and Scripting sed or awk editing help Post 302467776 by Scrutinizer on Sunday 31st of October 2010 07:14:33 AM
Old 10-31-2010
@ygemici, your input samples do not reflect what DGPickett and I were talking about. Compare this:
Code:
$ echo '  ,          abc,             ,sd ,      ,   ,     ' | sed 's/,[0-9]*,/CHANGE/g'
  ,          abc,             ,sd ,      ,   ,
$ echo '  ,          abc,             ,sd ,      ,   ,     ' | sed 's/,[0-9]*,/CHANGE/g'
  ,          abc,             ,sd ,      ,   ,

with this:

Code:
$  echo '  ,          abc,             ,sd ,      ,   ,     ' |sed -r ':a;s/(,|^)  *(,|$)/\1\2/;ta'
,          abc,,sd ,,,

Without the loop the solution would be incomplete and we would end up with this:
Code:
$ echo '  ,          abc,             ,sd ,      ,   ,     ' |sed -r 's/(,|^)  *(,|$)/\1\2/'
,          abc,             ,sd ,      ,   ,

Which is what DGPickett was talking about.
 

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NAMESPACE(6)							   Games Manual 						      NAMESPACE(6)

NAME
namespace - name space description file DESCRIPTION
Namespace files describe how to construct a name space from scratch, an operation normally performed by the newns subroutine (see auth(2)) which is typically called by init(8). Each line specifies one name space operation. Spaces and tabs separate arguments to operations; no quotes or escapes are recognized. Blank lines and lines with # as the first non-space character are ignored. Environment variables of the form $name are expanded within arguments, where name is a UTF string terminated by white space, a /, or a $. The known operations and their arguments are: mount [-abc] servename old [spec] Mount servename on old. bind [-abc] new old Bind new on old. import [-abc] host "[remotepath]mountpoint Import remotepath from machine server and attach it to mountpoint. cd dir Change the working directory to dir. The options for bind, mount, and import are interpreted as in bind(1) and import(4). SEE ALSO
bind(1), namespace(4), init(8) NAMESPACE(6)
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