geomat0101 / tail Goto Github PK

   With no FILE, or when FILE is -, read standard input.

   Mandatory arguments to long options are mandatory for short
   options too.

   -c, --bytes=[+]NUM
          output the last NUM bytes; or use -c +NUM to output
          starting with byte NUM of each file

   -f, --follow[={name|descriptor}]
          output appended data as the file grows;

          an absent option argument means 'descriptor'

   -F     same as --follow=name --retry

   -n, --lines=[+]NUM
          output the last NUM lines, instead of the last 10; or use
          -n +NUM to output starting with line NUM

   --max-unchanged-stats=N
          with --follow=name, reopen a FILE which has not

          changed size after N (default 5) iterations to see if it
          has been unlinked or renamed (this is the usual case of
          rotated log files); with inotify, this option is rarely
          useful

   --pid=PID
          with -f, terminate after process ID, PID dies

   -q, --quiet, --silent
          never output headers giving file names

   --retry
          keep trying to open a file if it is inaccessible

   -s, --sleep-interval=N
          with -f, sleep for approximately N seconds (default 1.0)
          between iterations; with inotify and --pid=P, check
          process P at least once every N seconds

   -v, --verbose
          always output headers giving file names

   -z, --zero-terminated
          line delimiter is NUL, not newline

   --help display this help and exit

   --version
          output version information and exit

   NUM may have a multiplier suffix: b 512, kB 1000, K 1024, MB
   1000*1000, M 1024*1024, GB 1000*1000*1000, G 1024*1024*1024, and
   so on for T, P, E, Z, Y.  Binary prefixes can be used, too:
   KiB=K, MiB=M, and so on.

   With --follow (-f), tail defaults to following the file
   descriptor, which means that even if a tail'ed file is renamed,
   tail will continue to track its end.  This default behavior is
   not desirable when you really want to track the actual name of
   the file, not the file descriptor (e.g., log rotation).  Use
   --follow=name in that case.  That causes tail to track the named
   file in a way that accommodates renaming, removal and creation.

   Full documentation <https://www.gnu.org/software/coreutils/tail>
   or available locally via: info '(coreutils) tail invocation'