how to have a cp progress bar? Post: 302197445

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Top Forums UNIX for Advanced & Expert Users how to have a cp progress bar? Post 302197445 by era on Wednesday 21st of May 2008 02:56:23 AM

05-21-2008

Registered User

Here's a quick hack. If you don't have awk or stat available, I don't imagine you will have Perl, either.

Code:

#!/bin/sh
#
# cpbar -- era 2008-05-21 for unix.com
#
# Depends:
#  stat
#  cp
#  awk

syntax () {
    echo "Syntax: $0 srcfile destfile" >&2
    echo " " "$@" >&2
    exit 1
}

test -r "$1" || syntax "File '$1' not found"
test -d "$2" && syntax "Must name destination file ('$2' is a directory)"

size=`stat -c %s "$1"`

cp "$1" "$2" &
cppid=$!

trap 'echo; kill $cppid; rm -f "$2"; exit 127' 1 2 3 5 15

while true; do
    nsize=`stat -c %s "$2"`
    awk -v f1="$1" -v f2="$2" -v size=$size -v nsize=$nsize '
	BEGIN { printf "Copying %s to %s: %4.2f%%\r", f1, f2, 100*nsize/size }'
    case $nsize in $size) break ;; esac
    sleep 1
done

echo

wait $cppid

Last edited by era; 05-21-2008 at 04:00 AM.. Reason: Remove destination file if interrupted; percentage calculation wrong (duh :-); put break after awk so it prints 100% at end

era

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igawk

IGAWK(1)							 Utility Commands							  IGAWK(1)

NAME

       igawk - gawk with include files

SYNOPSIS

       igawk [ all gawk options ] -f program-file [ -- ] file ...
       igawk [ all gawk options ] [ -- ] program-text file ...

DESCRIPTION

       Igawk is a simple shell script that adds the ability to have ``include files'' to gawk(1).

       AWK programs for igawk are the same as for gawk, except that, in addition, you may have lines like

	      @include getopt.awk

       in your program to include the file getopt.awk from either the current directory or one of the other directories in the search path.

OPTIONS

       See gawk(1) for a full description of the AWK language and the options that gawk supports.

EXAMPLES

       cat << EOF > test.awk
       @include getopt.awk

       BEGIN {
	    while (getopt(ARGC, ARGV, "am:q") != -1)
		 ...
       }
       EOF

       igawk -f test.awk

SEE ALSO

       gawk(1)

       Effective AWK Programming, Edition 1.0, published by the Free Software Foundation, 1995.

AUTHOR

       Arnold Robbins (arnold@skeeve.com).

Free Software Foundation					    Nov 3 1999								  IGAWK(1)

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