[ale] Stupid Bash Question

[Michael Campbell]

One advantage of $() over `` is that you get matching opposing pairs of
parens and nested commands are a bit easier to  parse.

echo $(foo bar $(baz blah) and then bleh)

as opposed to

echo `foo bar `baz blah` and then bleh`


For me another win is that I generally run shells inside emacs buffers so I
can make use of the paren-matching feature from within emacs to help out.


On Wed, Mar 7, 2012 at 11:25 AM, Benjie <benjie.godfrey at gmail.com> wrote:

> It looks like you missed placing a single quote after the 'echo `hostname`
> command.  That would prevent awk from interpreting its print command.
>
> On Wed, Mar 7, 2012 at 11:07 AM, Brandon Colbert <
> colbert.brandon at gmail.com> wrote:
>
>> I am trying figure out what the heck is wrong with awk here.
>>
>> for i in $(seq 1 1); do ssh 127.0.0.$i 'echo `hostname`; if [ `free -m |
>> grep -i swap | awk '{print $3}'` > 1000 ]; then sudo echo reclaim; else
>> echo hey; fi'; done
>>
>> The command works, but I get an error about awk: Any suggestions?
>>
>> deblapatl01
>> awk: cmd. line:1: {print
>> awk: cmd. line:1:       ^ unexpected newline or end of string
>> hey
>>
>>
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>
>
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