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Full Discussion: Get lines in 5 seconds
Top Forums Shell Programming and Scripting Get lines in 5 seconds Post 75127 by Just Ice on Wednesday 15th of June 2005 01:27:33 PM
Old 06-15-2005
try ...

Code:
currcnt=0
oldcnt=0
while true
do
    currcnt=$(wc -l file1 | awk '{print $1}')
    if [ $currcnt -ne $oldcnt ]
    then
        sed "1,${oldcnt}d" file1 | grep "EXACTO" >> file2
        oldcnt=$currcnt
    fi
    sleep 5
done

 

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XZDIFF(1)							     XZ Utils								 XZDIFF(1)

NAME
xzcmp, xzdiff, lzcmp, lzdiff - compare compressed files SYNOPSIS
xzcmp [cmp_options] file1 [file2] xzdiff [diff_options] file1 [file2] lzcmp [cmp_options] file1 [file2] lzdiff [diff_options] file1 [file2] DESCRIPTION
xzcmp and xzdiff invoke cmp(1) or diff(1) on files compressed with xz(1), lzma(1), gzip(1), or bzip2(1). All options specified are passed directly to cmp(1) or diff(1). If only one file is specified, then the files compared are file1 (which must have a suffix of a supported compression format) and file1 from which the compression format suffix has been stripped. If two files are specified, then they are uncom- pressed if necessary and fed to cmp(1) or diff(1). The exit status from cmp(1) or diff(1) is preserved. The names lzcmp and lzdiff are provided for backward compatibility with LZMA Utils. SEE ALSO
cmp(1), diff(1), xz(1), gzip(1), bzip2(1), zdiff(1) BUGS
Messages from the cmp(1) or diff(1) programs refer to temporary filenames instead of those specified. Tukaani 2010-09-27 XZDIFF(1)
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