Re: simple shell script question

2017-08-09 Thread Ed Greshko
On 08/10/2017 10:07 AM, bruce wrote: > the test was to (1) replicate the results I get from the cmdline. > and to then (2) be able to pass a input/var to then generate the pgrep > count results > > the initial cmdline pgrep -- pgrep -f 'bash' | wc -l > -- on the test box, this returns a "50" coun

Re: simple shell script question

2017-08-09 Thread bruce
hey guys... appears to be user error... looks like i was on the wrong/older box.. on the updated centos/fed.. looks as i expected... at least for now! thanks.. On Wed, Aug 9, 2017 at 10:07 PM, bruce wrote: > On Wed, Aug 9, 2017 at 9:52 PM, kevin martin wrote: >> is the end result meant to be

Re: simple shell script question

2017-08-09 Thread bruce
On Wed, Aug 9, 2017 at 9:52 PM, kevin martin wrote: > is the end result meant to be able to pass some string ($1) to pgrep that > get's counted? knowing what you're trying to accomplish would make it > easier to help. > > --- > - hey kevin. sorry. the test was to (1) replicate the

Re: simple shell script question

2017-08-09 Thread Gordon Messmer
On 08/09/2017 05:47 PM, bruce wrote: aa='bash' xx="pgrep -f '"${aa}"' | wc -l" echo $xx <<< this dsplays the test pgrep echo `$xx` << err msg echo `${xx}` << err msg... eval "$xx" or: echo $(eval "$xx") In the invocation you're trying to use, "|" is being passed as an argument to pgre

Re: simple shell script question

2017-08-09 Thread kevin martin
is the end result meant to be able to pass some string ($1) to pgrep that get's counted? knowing what you're trying to accomplish would make it easier to help. --- Regards, Kevin Martin On Wed, Aug 9, 2017 at 8:24 PM, bruce wrote: > h update.. > > this works... > aa='bash' > echo $aa

Re: simple shell script question

2017-08-09 Thread bruce
h update.. this works... aa='bash' echo $aa " pp" xx= pgrep -f $aa | wc -l echo $xx however, I can't seem to figure out how to enclose the aa var in single quotes within the pgrep. thoughts/comments.. thanks On Wed, Aug 9, 2017 at 8:47 PM, bruce wrote: > trying to get the following t

Re: simple shell script question

2017-08-09 Thread kevin martin
unclear what you are trying to accomplish here. If, for example, you are trying to pgrep for all processes that have 'bash' in the process name: #!/bin/bash aa='bash' xx="pgrep -f ${aa} | wc -l" echo $xx <<< shows the command in $xx eval ${xx} <<< runs the command in $xx --- Regards, Kevin Ma

Re: simple shell script question

2017-08-09 Thread Rick Stevens
On 08/09/2017 05:47 PM, bruce wrote: > trying to get the following to output > pgrep -f 'bash' | wc -l > > the var $xx has the cmd... > something's missing to allow the backtics to run the cmd.. > if the cmd is hadcoded.run, it works.. > > can't see what the homer simpson "doh" moment is!