Re: Wishing rmdir had a prompt
On 2019-09-02 17:22, Bernhard Voelker wrote:
Just recently I've been asked (off-list) why src/true.c needs to have
80+ lines while 3 lines would be enough.
This piqued my curiosity. Obvious comment header, localization, and
--{help,version} fluff aside, I was not aware of the GNU-specific fringe
case, outlined on the info page as steps to force true to produce a false
return value. It has been added to my list of party gags.
Re: Enhancement request to GNU date
2019-10-17 14:22:53 +0300, Yair Lenga: [...] > Would like to ask that you will consider the following extension to 'date'. > The change will make it easier to perform basic date manipulations in > scripts. > > The request is to add the following 'suffixes' to the date (similar to the > way relative dates are supported): > * EOM - last date of the month > * BOM - beginning of the month > * EOY - last date on the year > * BOY - first date of the year > * prev EOM - last day previous month > * next EOM - last day next month > * prev EOY, next EOY - ditto. > > While all of the constructs can be achieved today, they require multiple > calls to date, with cumbersome formatting. Having those as "built-in" will > make it easier to perform date manipulations. > > Consider getting the number of days in the previous month > Now: > INPUT=2019-02-28 > date +'%d' -d "$(date +'%Y-%m-01' -d "$INPUT") -1day" > Using PREV EOM > date +'%d' -d "$INPUT prev EOM" > > Thank you for taking time to look into this request. Any feedback is [...] For the record, with the ast-open implementation of date (like the ksh93 date builtin if built as part of ast-open): $ ast-date -d 'this month, yesterday' +%d 30 $ ast-date -d 'final day in last month' +%d 30 $ ast-date -d 'final day in december this year' +%F 2019-12-31 $ ast-date -d '1st day in january' +%F 2019-01-01 See more examples of what it supports at https://github.com/att/ast/blob/ksh93u/src/cmd/tests/date.dat -- Stephane
Re: feature request: self join from stdin
On 2019-10-21 08:28, Rasmus Borup Hansen wrote: > [...] e.g. this hangs on my machine: > > mkfifo fifo && seq -s , 2 | tee fifo | join -j2 - fifo | paste -s && rm > fifo okay, then better use a regular file, and join that with itself: $ seq -s , 2 > x $ join -j2 x x | paste -s 1,2,3,4,5,6,[...] Have a nice day, Berny
