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Top Forums Shell Programming and Scripting Add sth to end of each line, but only for specific files Post 302539760 by Bloomy on Monday 18th of July 2011 02:59:19 PM
Old 07-18-2011
Yes, it was the nasty back quotes! Thanks!

I have a different problem now. I would like to copy the last 5 lines in each file on that list to a textfile.

I wrote this code:

Code:
for i in `cat ../list`
do
    tail -n 5 chp_blizzard_*  $i >> out.data
done

I have around 700 lines in the list, each line contains the name of one file...but the ouput I get is a 3GB textfile with millions of lines because it doesn't only copy the lines from the files on that list but from other files as well.
 

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CAT(1)							      General Commands Manual							    CAT(1)

NAME
cat, read, nobs - catenate files SYNOPSIS
cat [ file ... ] read [ -m ] [ -n nline ] [ file ... ] nobs [ file ... ] DESCRIPTION
Cat reads each file in sequence and writes it on the standard output. Thus cat file prints a file and cat file1 file2 >file3 concatenates the first two files and places the result on the third. If no file is given, cat reads from the standard input. Output is buffered in blocks matching the input. Read copies to standard output exactly one line from the named file, default standard input. It is useful in interactive rc(1) scripts. The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines. Read always executes a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a- time data. It never reads any more data from the input than it prints to the output. Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them. It is useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window. SOURCE
/src/cmd/cat.c /src/cmd/read.c /bin/nobs SEE ALSO
cp(1) DIAGNOSTICS
Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines. BUGS
Beware of and which destroy input files before reading them. CAT(1)
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