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Full Discussion: editing files
Top Forums Shell Programming and Scripting editing files Post 302336606 by peterro on Wednesday 22nd of July 2009 12:19:29 PM
Old 07-22-2009
Quote:
Originally Posted by vgersh99
This is GNU-ism - not all sed-s support that.
This is true, so if that isn't available I would use ed.

Code:
ed -s /target/file <<EOF
g/search/s/search/replace/g
w
q
EOF

This is a pretty simple example and you can loop through your target files. The reason for the two search fields in the above example is so you can search for something on a line and then search/replace something else on that particular line. Much more detail in Ch25 of Amazon.com: Expert Shell Scripting (Expert's Voice in Open Source): Ron Peters: Books
 

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LEARN ABOUT DEBIAN

lessecho

LESSECHO(1)                                                   General Commands Manual                                                  LESSECHO(1)

NAME

       lessecho - expand metacharacters

SYNOPSIS

       lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-a] file ...

DESCRIPTION

       lessecho  is  a program that simply echos its arguments on standard output.  But any metacharacter in the output is preceded by an "escape"
       character, which by default is a backslash.

OPTIONS

       A summary of options is included below.

       -ex    Specifies "x", rather than backslash, to be the escape char for metachars.  If x is "-", no escape char is used and  arguments  con-
              taining metachars are surrounded by quotes instead.

       -ox    Specifies "x", rather than double-quote, to be the open quote character, which is used if the -e- option is specified.

       -cx    Specifies "x" to be the close quote character.

       -pn    Specifies "n" to be the open quote character, as an integer.

       -dn    Specifies "n" to be the close quote character, as an integer.

       -mx    Specifies "x" to be a metachar.  By default, no characters are considered metachars.

       -nn    Specifies "n" to be a metachar, as an integer.

       -fn    Specifies "n" to be the escape char for metachars, as an integer.

       -a     Specifies that all arguments are to be quoted.  The default is that only arguments containing metacharacters are quoted

SEE ALSO

       less(1)

AUTHOR

       This manual page was written by Thomas Schoepf <schoepf@debian.org>, for the Debian GNU/Linux system (but may be used by others).

       Send bug reports or comments to bug-less@gnu.org.

                                                             Version 487: 25 Oct 2016                                                  LESSECHO(1)
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