3 ms·

Never knew about the "cal" command. I especially like that you can quickly look up a previous or future month/year. >> cal 3 1973 quickly shows a calendar of Ma

by foobeer 13y ago

Never knew about the "cal" command. I especially like that you can quickly look up a previous or future month/year. >> cal 3 1973 quickly shows a calendar of March 1973

yogo 13y ago
Aliasing to 'cal -3' can also be good if you want a little continuity.
- xrt 13y ago
  The -3 arg is not available on OS X. Odd, since it's been in BSD Unix since forever. http://www.freebsd.org/cgi/man.cgi?query=cal http://www.freebsd.org/cgi/man.cgi?query=cal
  - clarry 13y ago
    It's hardly ubiquitous. NetBSD has had it for 11 years. FreeBSD has had it for three years and six months. DragonFly doesn't have it, OpenBSD doesn't have it... http://cvsweb.netbsd.org/bsdweb.cgi/src/usr.bin/cal/cal.c?rev=1.12&content-type=text/x-cvsweb-markup&only_with_tag=MAIN http://cvsweb.netbsd.org/bsdweb.cgi/src/usr.bin/cal/cal.c?re... http://svnweb.freebsd.org/base?view=revision&revision=204697 http://svnweb.freebsd.org/base?view=revision&revision=204697
Shish2k 13y ago
you can even look up `cal sept 1752`
- quchen 13y ago
  Funny, 3-13 are missing here. > cal sep 1752 September 1752 Su Mo Tu We Th Fr Sa 1 2 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Edit: Oh, colour me surprised. https://en.wikipedia.org/wiki/September_14 https://en.wikipedia.org/wiki/September_14
  - ghotli 13y ago
    This was the best thing I learned today
mturmon 13y ago
Right, you can use this to easily find the number of days in an arbitrary month in a script: % cal 2 1972 | tail +3 | wc -w 29
- parennoob 13y ago
  tail: cannot open +3 for reading: No such file or directory What am I doing wrong? This worked like a charm though: cal dec 2002 | tail -6 | wc -w (since it always takes up 6 lines, even sep 1752)
  - typicalrunt 13y ago
    It might be system-dependent. I'm on OSX and the command works properly.
  - jbarber 13y ago
    The "+n" syntax is not standards compliant, from the tail info page (on fedora 19): On older systems, the leading '-' can be replaced by '+' in the obsolete option syntax with the same meaning as in counts, and obsolete usage overrides normal usage when the two conflict. This obsolete behavior can be enabled or disabled with the '_POSIX2_VERSION' environment variable (*note Standards conformance::).

by foobeer 13y ago

Never knew about the "cal" command. I especially like that you can quickly look up a previous or future month/year. >> cal 3 1973 quickly shows a calendar of March 1973

yogo 13y ago

Aliasing to 'cal -3' can also be good if you want a little continuity.

xrt 13y ago
The -3 arg is not available on OS X. Odd, since it's been in BSD Unix since forever. http://www.freebsd.org/cgi/man.cgi?query=cal http://www.freebsd.org/cgi/man.cgi?query=cal
- clarry 13y ago
  It's hardly ubiquitous. NetBSD has had it for 11 years. FreeBSD has had it for three years and six months. DragonFly doesn't have it, OpenBSD doesn't have it... http://cvsweb.netbsd.org/bsdweb.cgi/src/usr.bin/cal/cal.c?rev=1.12&content-type=text/x-cvsweb-markup&only_with_tag=MAIN http://cvsweb.netbsd.org/bsdweb.cgi/src/usr.bin/cal/cal.c?re... http://svnweb.freebsd.org/base?view=revision&revision=204697 http://svnweb.freebsd.org/base?view=revision&revision=204697

Shish2k 13y ago

you can even look up `cal sept 1752`

quchen 13y ago
Funny, 3-13 are missing here. > cal sep 1752 September 1752 Su Mo Tu We Th Fr Sa 1 2 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Edit: Oh, colour me surprised. https://en.wikipedia.org/wiki/September_14 https://en.wikipedia.org/wiki/September_14
- ghotli 13y ago
  This was the best thing I learned today

mturmon 13y ago

Right, you can use this to easily find the number of days in an arbitrary month in a script: % cal 2 1972 | tail +3 | wc -w 29

parennoob 13y ago
tail: cannot open +3 for reading: No such file or directory What am I doing wrong? This worked like a charm though: cal dec 2002 | tail -6 | wc -w (since it always takes up 6 lines, even sep 1752)
- typicalrunt 13y ago
  It might be system-dependent. I'm on OSX and the command works properly.
- jbarber 13y ago
  The "+n" syntax is not standards compliant, from the tail info page (on fedora 19): On older systems, the leading '-' can be replaced by '+' in the obsolete option syntax with the same meaning as in counts, and obsolete usage overrides normal usage when the two conflict. This obsolete behavior can be enabled or disabled with the '_POSIX2_VERSION' environment variable (*note Standards conformance::).