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| Message-ID: | <4B8DCB6C.3010207@columbus.rr.com> |
| Date: | Tue, 02 Mar 2010 21:37:32 -0500 |
| From: | Paul McFerrin <pmcferrin AT columbus DOT rr DOT com> |
| Reply-To: | pmcferrin AT columbus DOT rr DOT com |
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| To: | Cygwin <cygwin AT cygwin DOT com> |
| Subject: | "tail" command does not work as advertised |
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The "tail +4" commands does not work as advertised. When given such
command (advertised in man command), it complains it can't open the
file. With the command "tail +5 -", it produces the desired output with
some junk on standard output.
See examples:
$ ps -a | tail +5 -
tail: cannot open `+5' for reading: No such file or directory
==> standard input <==
PID PPID PGID WINPID TTY UID STIME COMMAND
5644 1 5644 5644 ? 18 20:24:45 /usr/bin/cygrunsrv
4928 5644 4928 4896 ? 18 20:24:45 /usr/sbin/cron
I 5088 1 5088 5356 con 1003 21:02:39 /lbin/ksh
5808 1 5808 4996 con 1003 21:02:53 /usr/bin/rxvt
6036 5808 6036 5580 0 1003 21:02:53 /usr/bin/ksh
5668 6036 6036 5668 0 1003 21:32:28 /usr/bin/ksh
I 5060 6036 6036 4544 0 1003 21:32:28 /usr/bin/tail
3832 5668 6036 2328 0 1003 21:32:28 /usr/bin/ps
/home/Paul.$ ps -a | tail +3
tail: cannot open `+3' for reading: No such file or directory
All examples are supposed to produced output from the beginning of the file.
- Paul
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