Homework & Coursework Questions

ls -t *.* > temp/files.txt
ls -pt */ >temp/dir.txt

ls -p | grep '/$' >/tmp/d.$$
ls -p | grep '[^/]$'>/tmp/f.$$
paste /tmp/d.$$ tmp/f.$$
rm /tmp/d.$$ tmp/f.$$

ls -t *.* > temp/files.txt
ls -1td */ > temp/dir.txt

cat

sort

paste

mk dir temp
ls -t *.* > temp/f.txt
ls -1td */ > temp/d.txt
paste temp/f.txt temp/d.txt

ls -pt | awk '
    /\/$/ {
        dcol[didx++] = $0;
        if( length( $0 ) > dmax )
            dmax = length( $0 );
        next;
    }
    {
        ccol[cidx++] = $0;
        next;
    }
    END {
        fmt = sprintf( "%%-%ds %%s\n", dmax );
        stop = didx > cidx ? didx : cidx;
        for( i = 0; i < stop; i++ )
            printf( fmt, dcol[i], ccol[i] );
    }
'