Re: easy BASH question

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]



On Mon Sep 16 16:34:31 UTC 2013, zGreenfelder zgreenfelder at gmail.com wrote:
>On Mon, Sep 16, 2013 at 12:27 PM,
> James B. Byrne <byrnejb at harte-lyne.ca>wrote:
>> I am obviously missing something basic here but can someone explain
>> to me what is wrong with the first statement, which returns nothing?
>>
>> $ history | grep ^su
>> $ history | grep su
>>  2997  su -l
>>  3024  su -l
>>  3050  su -l
>>  3054  su -l

> there are numbers at the start of the line?

Duh!  Thanks.  I could not see the forest for the trees I guess. I ended up
with the following as I wanted a visual scan of all variants not just the most
recent:

history | cut -f1-3 -d " " --complement | grep ^su

This is in the bash shell on CentOS-6.4.


-- 
***          E-Mail is NOT a SECURE channel          ***
James B. Byrne                mailto:ByrneJB@xxxxxxxxxxxxx
Harte & Lyne Limited          http://www.harte-lyne.ca
9 Brockley Drive              vox: +1 905 561 1241
Hamilton, Ontario             fax: +1 905 561 0757
Canada  L8E 3C3

_______________________________________________
CentOS mailing list
CentOS@xxxxxxxxxx
http://lists.centos.org/mailman/listinfo/centos




[Index of Archives]     [CentOS]     [CentOS Announce]     [CentOS Development]     [CentOS ARM Devel]     [CentOS Docs]     [CentOS Virtualization]     [Carrier Grade Linux]     [Linux Media]     [Asterisk]     [DCCP]     [Netdev]     [Xorg]     [Linux USB]
  Powered by Linux