awk passing variables
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From: Ben Bacarisse on 9 Jul 2010 11:05 Stu <beefstu350(a)hotmail.com> writes: > On Jul 7, 1:57 pm, Ben Bacarisse <ben.use...(a)bsb.me.uk> wrote: >> [...] You could also, in bash, use an >> array: >> >> cpu=($(tr ':' ' ' <<<$cpu_time)) >> >> to get ${cpu[0]} etc. >> >> If you don't want to run even tr, use a function: >> >> function split >> { >> IFS=':' >> set "$1" >> echo "$1" "$2" "$3" >> } >> >> cpu=($(split "$cpu_time")) <snip> > Ben thanks but your examples dont apper to work in ksh, which is the > shell I am using. No, indeed. That's why I said "in bash"! I think this is portable across shells: function set_cpu_time { cpu_hh="$1" cpu_mm="$2" cpu_ss="$3" } and then call: set_cpu_time $(split "$cpu_time") <snip> -- Ben.
From: Ben Bacarisse on 9 Jul 2010 11:17 Janis Papanagnou <janis_papanagnou(a)hotmail.com> writes: <snip> > But for your task I'd suggest to resort to Icarus' last suggestion which is > most simple and portable. Icarus' solution assumed the time came from a data command whose format could be altered to get the desired effect. That may fit the bill here but it is not a solution to the question as asked. <snip> -- Ben.
From: Janis Papanagnou on 9 Jul 2010 21:20 On 09/07/10 17:17, Ben Bacarisse wrote: > Janis Papanagnou <janis_papanagnou(a)hotmail.com> writes: > <snip> >> But for your task I'd suggest to resort to Icarus' last suggestion which is >> most simple and portable. > > Icarus' solution assumed the time came from a data command whose format > could be altered to get the desired effect. That may fit the bill here > but it is not a solution to the question as asked. You're right. Here's one using eval without assuming a date command eval $( printf "cpu_hh=%s cpu_mm=%s cpu_sec=%s" ${cpu_time//:/ } ) though non-POSIX because of the variable substitution it works only with modern shells. Janis > > <snip>
From: Stu on 12 Jul 2010 15:41 On Jul 9, 9:20 pm, Janis Papanagnou <janis_papanag...(a)hotmail.com> wrote: > On 09/07/10 17:17, Ben Bacarisse wrote: > > > Janis Papanagnou <janis_papanag...(a)hotmail.com> writes: > > <snip> > >> But for your task I'd suggest to resort to Icarus' last suggestion which is > >> most simple and portable. > > > Icarus' solution assumed the time came from a data command whose format > > could be altered to get the desired effect. That may fit the bill here > > but it is not a solution to the question as asked. > > You're right. Here's one using eval without assuming a date command > > eval $( printf "cpu_hh=%s cpu_mm=%s cpu_sec=%s" ${cpu_time//:/ } ) > > though non-POSIX because of the variable substitution it works only > with modern shells. > > Janis > > > > > > > <snip>- Hide quoted text - > > - Show quoted text - What would be considered a modern shell, bash? This, does not work with ksh. I already found the solution, but I am very interested in other methods to skin the perverbial cat. cpu_time=23:12:56 eval $(printf "cpu_hh=%s cpu_mm=%s cpu_sec=%s" ${cpu_time//:/}) ${cpu_time//:/}: 0403-011 The specified substitution is not valid for this command.
From: Janis Papanagnou on 12 Jul 2010 19:21
On 12/07/10 21:41, Stu wrote: > On Jul 9, 9:20 pm, Janis Papanagnou <janis_papanag...(a)hotmail.com> > wrote: >> On 09/07/10 17:17, Ben Bacarisse wrote: >> >>> Janis Papanagnou <janis_papanag...(a)hotmail.com> writes: >>> <snip> >>>> But for your task I'd suggest to resort to Icarus' last suggestion which is >>>> most simple and portable. >> >>> Icarus' solution assumed the time came from a data command whose format >>> could be altered to get the desired effect. That may fit the bill here >>> but it is not a solution to the question as asked. >> >> You're right. Here's one using eval without assuming a date command >> >> eval $( printf "cpu_hh=%s cpu_mm=%s cpu_sec=%s" ${cpu_time//:/ } ) >> >> though non-POSIX because of the variable substitution it works only >> with modern shells. >> >> Janis >> >> >> >> >> >>> <snip>- Hide quoted text - >> >> - Show quoted text - > > What would be considered a modern shell, bash? This, does not work > with ksh. It doesn't with a ksh88, it does with a ksh93, and bash, and zsh. ksh88 is indeed not a "modern" shell; it's very old (though still existing on commercial Unixes). For old shells like ksh88, or bourne shell, or standard shells use the upthread posted approach with IFS=: read which will certainly work on those non-"modern" shells. Janis > I already found > the solution, but I am very interested in other methods to skin the > perverbial cat. > > > cpu_time=23:12:56 > eval $(printf "cpu_hh=%s cpu_mm=%s cpu_sec=%s" ${cpu_time//:/}) > > ${cpu_time//:/}: 0403-011 The specified substitution is not valid for > this command. |