Issue
ls -la | awk 'BEGIN {printf "%s\t%s\n","Name","Size"}{if ($9 == "." && $5 == 0) print $9,"\t"$5}'
drwxrws---+ 6 rsy512 group20 4096 Oct 24 20:54 .
drwxrws---+ 6 root group20 68 Oct 24 14:19 ..
-rwxrw----. 1 rsy512 group20 568 Mar 3 2010 adhoc
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost1.c
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost2
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost3.cpp
drwxr-s---+ 2 rsy512 group20 6 Mar 3 2010 .ghostdir
-rwxrw----. 1 rsy512 group20 21 Feb 17 2010 input4.txt
-rwxrw----. 1 rsy512 group20 1878 Feb 26 2008 lab1.cpp
-rwxrw----. 1 rsy512 group20 1171 Feb 4 2010 Lab2.cpp
-rwxrw----. 1 rsy512 group20 1013 Mar 3 2010 proc
-rwxrw----. 1 rsy512 group20 109 Mar 3 2010 prog1.c
-rwxrw----. 1 rsy512 group20 104 Mar 3 2010 prog2.c
-rwxrw----. 1 rsy512 group20 0 Mar 3 2010 prog3.c.txt
-rwxrw----. 1 rsy512 group20 0 Mar 3 2010 prog.4c
drwxrws---+ 2 rsy512 group20 6 Mar 3 2010 programs.c
drwxrws---+ 2 rsy512 group20 6 Mar 3 2010 programs.cpp
-rw-rw----. 1 rsy512 group20 46 Oct 24 20:54 script1_t20
drwxrws---+ 2 rsy512 group20 6 Mar 3 2010 test1
I need to output the 3 files ".ghost..." and their file size. With the header name and size.
Im trying to use a logical AND (&&) to achieve this effect. Only after both conditions are satisfied, proceed to print the information. Add a header ,"Name", "Size" to your results. Add this awk script (preceded by ls -l |) to the content of script1_tXX
Solution
Let your's ls -la output be
drwxrws---+ 6 rsy512 group20 4096 Oct 24 20:54 .
drwxrws---+ 6 root group20 68 Oct 24 14:19 ..
-rwxrw----. 1 rsy512 group20 568 Mar 3 2010 adhoc
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost1.c
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost2
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost3.cpp
drwxr-s---+ 2 rsy512 group20 6 Mar 3 2010 .ghostdir
-rwxrw----. 1 rsy512 group20 21 Feb 17 2010 input4.txt
-rwxrw----. 1 rsy512 group20 1878 Feb 26 2008 lab1.cpp
-rwxrw----. 1 rsy512 group20 1171 Feb 4 2010 Lab2.cpp
-rwxrw----. 1 rsy512 group20 1013 Mar 3 2010 proc
-rwxrw----. 1 rsy512 group20 109 Mar 3 2010 prog1.c
-rwxrw----. 1 rsy512 group20 104 Mar 3 2010 prog2.c
-rwxrw----. 1 rsy512 group20 0 Mar 3 2010 prog3.c.txt
-rwxrw----. 1 rsy512 group20 0 Mar 3 2010 prog.4c
drwxrws---+ 2 rsy512 group20 6 Mar 3 2010 programs.c
drwxrws---+ 2 rsy512 group20 6 Mar 3 2010 programs.cpp
-rw-rw----. 1 rsy512 group20 46 Oct 24 20:54 script1_t20
drwxrws---+ 2 rsy512 group20 6 Mar 3 2010 test1
then
$9 == "."
does check if whole 9th field is just dot, this condition only holds for one line in your's ls -la output namely
drwxrws---+ 6 rsy512 group20 4096 Oct 24 20:54 .
but you want to
output the 3 files ".ghost..."
so you should be looking for .ghost somewhere inside 9th field, this for example might be expressed as
$9 ~ /\.ghost/
note that . needs to be escaped to mean literal dot, above condition holds for lines
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost1.c
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost2
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost3.cpp
drwxr-s---+ 2 rsy512 group20 6 Mar 3 2010 .ghostdir
if you wish to exclude dirs you might do that by adding condition
!/^d/
which might be read as line does not (!) starts with (^) character d, therefore complete condition might be written as
!/^d/ && $9 ~ /\.ghost/ && $5 == 0
which does hold for
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost1.c
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost2
-rw-r-----. 1 rsy512 group20 0 Mar 3 2010 .ghost3.cpp
Disclaimer: this assumes you never uses any whitespace in files names.
(test in gawk 4.2.1)
Answered By - Daweo Answer Checked By - Timothy Miller (WPSolving Admin)