On Mon, Mar 04, 2013 at 12:32:32PM +0100, Paolo Aglialoro wrote:
| Great one!
| How to put that nice expression into an alias without console complaining
| when executed?
|
|
| # ls -l | awk '{ SUM += $5 } END { print SUM }'
| 569047
|
| # alias tot="ls -l | awk '{ SUM += $5 } END { print SUM }'"
| # tot
| awk: syntax error at source line 1
| context is
| { SUM += >>> } <<<
| awk: illegal statement at source line 1
Escape the "$" in the awk expression:
[weerd@despair] $ alias tot="ls -l | awk '{SUM+=\$5} END {print SUM}'"
[weerd@despair] $ tot
207777
I still wonder why people want to know this (seemingly useless) value.
What does it even mean ?
[weerd@despair] $ mkdir /tmp/test
[weerd@despair] $ cd /tmp/test
[weerd@despair] $ dd if=/dev/zero of=a bs=1024 seek=2048 count=1
1+0 records in
1+0 records out
1024 bytes transferred in 0.000 secs (34133333 bytes/sec)
[weerd@despair] $ ln a b
[weerd@despair] $ ls -l
total 128
-rw-r--r-- 2 weerd wheel 2098176 Mar 4 12:49 a
-rw-r--r-- 2 weerd wheel 2098176 Mar 4 12:49 b
[weerd@despair] $ tot
4196352
[weerd@despair] $ du -csh a b
32.0K a
32.0K total
(note the lie ls(1) spreads here)
| Btw, for higher readability, it would also be great to put periods in the
| resulting output like: 1.264.691
Well, that should be easy enough to add yourself :) Left as an
exercise to the reader...
Cheers,
Paul 'WEiRD' de Weerd
| Thanks :)
|
|
| On Sun, Mar 3, 2013 at 11:16 PM, Ted Unangst <[email protected]> wrote:
|
| > On Sun, Mar 03, 2013 at 22:02, Paul de Weerd wrote:
| > > [weerd@despair] $ ls -l /tmp/test/* | awk '{SUM+=$5} END {print SUM}'
| >
| > heh. :)
| >
| > ~/bin> cat filesizes
| > #!/bin/sh
| > ls -l $@ | awk '{sum += $5} END { print sum }'
|
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