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Full Discussion: Insert content of a file into another file before given pattern
Top Forums Shell Programming and Scripting Insert content of a file into another file before given pattern Post 302942881 by Don Cragun on Saturday 2nd of May 2015 06:05:54 PM
Old 05-02-2015
I usually find ed better suited for things like this than sed. Try:
Code:
#!/bin/ksh
ed -s x1 <<-EOF
	H
	/BBB/-1r x2
	w somefile
	q
EOF

The ed H command will give you a semi-useful diagnostic if the pattern you're looking for is not present in the input file.

This will save the updated contents in a file name somefile. If you want to update x1 instead of creating a new file; change:
Code:
	w somefile

to just:
Code:
	w

If you want the update written to standard output instead of to a file, change the lines:
Code:
	w somefile
	q

to:
Code:
	,p
	Q

This User Gave Thanks to Don Cragun For This Post:
migurus
 

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LEARN ABOUT OPENSOLARIS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh,
       /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh,
       /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list.

       Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1).

FILES

       /etc/shells    list of shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.11							    20 Nov 2007 							 shells(4)
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