Bruce Momjian wrote:
> Gregory Stark wrote:
> I don't see that behavior here on Ubuntu 7.10:
>
> $ COLUMNNS=120 ls -C |cat
> archive cd initrd lost+found proc srv usr
> basement.usr dev initrd.img media root sys var
> bin etc laptop mnt rtmp tmp vmlinuz
> boot home lib opt sbin u win
> $ ls --version
> ls (GNU coreutils) 5.97
>
> That is not a 120 width. 'ls' seems to ignore columns for pipe output.
Oops, Alvaro pointed out I typo'ed the variable name COLUMNS as
COLUMNNS. I see now that 'ls -C' does honor columns. See my later
posting about '\pset wrapped 0' as a special case where we could honor
the ioctl/COLUMNS case.
My real confusion is this:
$ echo $COLUMNS146
$ ls -C|lessarchive cd initrd lost+found proc srv usrbasement.usr dev initrd.img media root
sys varbin etc laptop mnt rtmp tmp vmlinuzboot home lib opt sbin
u win
$ COLUMNS=120 ls -C|lessarchive bin cd etc initrd laptop lost+found mnt proc rtmp srv tmp usr
vmlinuzbasement.usr boot dev home initrd.img lib media opt root sbin sys u var win
Why does the first 'ls' not honor columns while the second does? How
does 'ls' detect that the COLUMNS=120 is somehow different from the
default COLUMNS value?
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
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