Date: Thu, 11 Apr 2019 11:09:20 +0200 From: Christian Barthel <bch@online.de> To: Polytropon <freebsd@edvax.de> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Column widths FROM / WHAT in w(1) Message-ID: <87lg0ghprz.fsf@x230.onfire.org> In-Reply-To: <20190406153319.36f41b8f.freebsd@edvax.de> (Polytropon's message of "Sat, 6 Apr 2019 15:33:19 %2B0200") References: <20190406153319.36f41b8f.freebsd@edvax.de>
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Content-Type: text/plain
Polytropon <freebsd@edvax.de> writes:
> Any idea on how to get the old layout of w back, instead
> of increasing the terminal width?
w(1) is using ioctl's to determine the column width of the
terminal. Other tools like ps (-w) and top can be configured to
change the column width. On Linux, it seems that the variable
COLUMN allows overriding it.
Attached is a small patch that would add an environment check on
the COLUMN variable. Further processing would be possible then,
like:
# COLUMN=180 ./w |sed 1d| cut -c 76-
WHAT
tmux: client (/tmp//tmux-1000/default) (tmux)
cut -c 76-
-tcsh (tcsh)
I am not sure if there is another way to change the perceived
column width in w(1).
--
Christian Barthel <bch@online.de>
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Content-Type: text/x-diff
Content-Disposition: inline; filename=column_in_w.patch
diff --git a/usr.bin/w/w.c b/usr.bin/w/w.c
index f2da6485a74..2db79121e4a 100644
--- a/usr.bin/w/w.c
+++ b/usr.bin/w/w.c
@@ -137,11 +137,12 @@ main(int argc, char *argv[])
struct kinfo_proc *dkp;
struct stat *stp;
time_t touched;
- int ch, i, nentries, nusers, wcmd, longidle, longattime;
+ int tenv, ch, i, nentries, nusers, wcmd, longidle, longattime;
const char *memf, *nlistf, *p, *save_p;
char *x_suffix;
char buf[MAXHOSTNAMELEN], errbuf[_POSIX2_LINE_MAX];
char fn[MAXHOSTNAMELEN];
+ char *colenv;
char *dot;
(void)setlocale(LC_ALL, "");
@@ -315,6 +316,10 @@ main(int argc, char *argv[])
ttywidth = 79;
else
ttywidth = ws.ws_col - 1;
+ if ((colenv = getenv("COLUMN")) != NULL)
+ if ((tenv = atoi(colenv)) > 0)
+ ttywidth = tenv;
+
argwidth = ttywidth - WUSED;
if (argwidth < 4)
argwidth = 8;
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