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Full Discussion: SED command using multiple input files
Top Forums Shell Programming and Scripting SED command using multiple input files Post 302454781 by sheoguey on Monday 20th of September 2010 03:04:40 AM
Old 09-20-2010
SED command using multiple input files
What is the syntax to use multiple input files in a SED command. i.e. substitute a word with a phrase in every file in a directory.

for every file in /usr/include that has the word "date" in the file
grep -l '\<date\>' /usr/include/*.h
find each occurrence of the word "time" in the file & replace it with "Smarts" and write the results to newfile.txt
sed -n 's/\<time\>/Smarts/pg' [results of the grep -l query above] >>newfile.txt
I tried starting with the grep & pipe to sed. it just reads the filenames in, not the file.

I can sed -n 's/\<time\>/Smarts/pg' /usr/include/*.h >>newfile.txt but that uses every file in /usr/include, not just the ones containing the word "date"

Looks like I need your help!
 

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LEARN ABOUT XFREE86

truncate

TRUNCATE(1)							   User Commands						       TRUNCATE(1)

NAME

       truncate - shrink or extend the size of a file to the specified size

SYNOPSIS

       truncate OPTION... FILE...

DESCRIPTION

       Shrink or extend the size of each FILE to the specified size

       A FILE argument that does not exist is created.

       If  a  FILE  is	larger than the specified size, the extra data is lost.  If a FILE is shorter, it is extended and the extended part (hole)
       reads as zero bytes.

       Mandatory arguments to long options are mandatory for short options too.

       -c, --no-create
	      do not create any files

       -o, --io-blocks
	      treat SIZE as number of IO blocks instead of bytes

       -r, --reference=RFILE
	      base size on RFILE

       -s, --size=SIZE
	      set or adjust the file size by SIZE bytes

       --help display this help and exit

       --version
	      output version information and exit

       The SIZE argument is an integer and optional unit (example: 10K is 10*1024).  Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (pow-
       ers of 1000).

       SIZE  may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round
       down to multiple of, '%' round up to multiple of.

AUTHOR

       Written by Padraig Brady.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report truncate translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       dd(1), truncate(2), ftruncate(2)

       Full documentation at: <http://www.gnu.org/software/coreutils/truncate>
       or available locally via: info '(coreutils) truncate invocation'

GNU coreutils 8.28						   January 2018 						       TRUNCATE(1)
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