Re: What is the best way to touch a file and set its time of the last time of a bunch of other files?

[Stephane Chazelas]

2015-08-07 02:21:07 -0500, Peng Yu:
> Hi, `touch -r` allows one to set the time of a file same as a
> reference file. What if one wants to set the time to be the last time
> of multiple files? Is there an easy way to do so?
[...]

With zsh,

touch -r /path/to/*(om[1]) file

Would set file's time to that of the newest non-hidden file in
/path/to.

-- 
Stephane

Re: What is the best way to touch a file and set its time of the last time of a bunch of other files?

[Stephane Chazelas]

2015-08-07 11:09:52 +0200, Andreas Schwab:
> Andreas Schwab  writes:
> > Peng Yu 
> >  
> > writes:
> >
> >> Hi, `touch -r` allows one to set the time of a file same as a
> >> reference file. What if one wants to set the time to be the last time
> >> of multiple files? Is there an easy way to do so?
> >
> > $ touch -d @$(stat -c %s $files | sort -n | tail -n1) $file
> %Y
> 
[...]

Note that that truncates the date to its integer part. You may
want to make it %.Y instead.

touch -d "@$(stat -c %.Y -- "${files[@]}" | sort -rg | head -n1)" -- "$file"

(also, don't foget the quotes around expansions).

-- 
Stephane

Re: What is the best way to touch a file and set its time of the last time of a bunch of other files?

[Andreas Schwab]

Andreas Schwab schwab-td1emuhucqxl1znqvxd...@public.gmane.org writes:

 Peng Yu 
 pengyu.ut-re5jqeeqqe8avxtiumwx3w-xmd5yjdbdmrexy1tmh2...@public.gmane.org 
 writes:

 Hi, `touch -r` allows one to set the time of a file same as a
 reference file. What if one wants to set the time to be the last time
 of multiple files? Is there an easy way to do so?

 $ touch -d @$(stat -c %s $files | sort -n | tail -n1) $file
%Y

Andreas.

-- 
Andreas Schwab, sch...@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
And now for something completely different.

Re: What is the best way to touch a file and set its time of the last time of a bunch of other files?

[Andreas Schwab]

Peng Yu pengyu.ut-re5jqeeqqe8avxtiumw...@public.gmane.org writes:

 Hi, `touch -r` allows one to set the time of a file same as a
 reference file. What if one wants to set the time to be the last time
 of multiple files? Is there an easy way to do so?

$ touch -d @$(stat -c %s $files | sort -n | tail -n1) $file

Andreas.

-- 
Andreas Schwab, sch...@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
And now for something completely different.