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Edit File: _mt

#compdef mt

local -a args cmds
local state line curcontext="$curcontext" ret=1

args=( '(-)-f[specify raw tape device]:tape device:_files' )
cmds=(
  {eof,weof}':write specified number of EOF marks at current position'
  'fsf:forward space by specified number of files'
  'fsr:forward space by specified number of records'
  'bsf:backward space by specified number of files'
  'bsr:backward space by specified number of records'
  'asf:absolute space to specified file number'
  'eom:go to end of recorded media on the tape'
  'rewind:rewind the tape'
  {offline,rewoffl}':rewind and unload the tape'
  'status:print status information about the tape unit'
  'retension:rewind, wind to end of reel, rewind again - smoothes tape tension'
  'erase:erase the tape'
)

if _pick_variant gnu=GNU unix --version; then
  args=(
    '(1 2 -)'{-V,--version}'[print version info]' 
    '(1 2 -)--help[display usage info]'
    '(-V --version --help -f --file)'{-f,--file=}'[specify raw tape device]:tape device:_files'
    '(-V --version --help)--rsh-command=[specify remote shell command]:rsh command:_command_names -e'
  )
  # should really allow remote user@host for tape device
  cmds+=(
    'bsfm:backward space by specified number of file marks'
    'fsfm:forward space by specified number of file marks'
    'fss:forward space by specified number of setmarks'
    'bss:backward space by specified number of setmarks'
    'wset:write specified number of setmarks at current position'
    {eod,seod}':space to end of valid data'
    'setblk:set drive block size'
    'setdensity:set tape density code'
    'drvbuffer:set drive buffer code'
    'stoptions:set driver option bits'
    'stwrthreshold:set device write threshold'
    'seek:seek to specified block'
    'tell:tell the current block on tape'
    'densities:explain some common density codes'
    'datcompression:enquire or set compression status'
  )
elif [[ $OSTYPE = (freebsd|dragonfly)* ]]; then
  cmds=( ${cmds:#(asf|eof):*}
    'smk:write specified number of setmarks at current position'
    'fss:forward space by specified number of setmarks'
    'bss:backward space by specified number of setmarks'
    'rdhpos:read hardware block position'
    'rdspos:read SCSI logical block position'
    'sethpos:set hardware block position'
    'setspos:set SCSI logical block position'
    'errstat:print error status info about device'
    'blocksize:set drive block size'
    'density:set tape density code'
    'geteotmodel:print the current EOT filemark model'
    'seteotmodel:set the current EOT filemark model'
    'eod:go to end of recorded media on the tape'
    'comp:set compression mode'
  )
elif [[ $OSTYPE = solaris* ]]; then
  cmds+=(
    'nbsf:back space by specified number of files positioning at file start'
    'reserve:allow drive to remain reserved after close until explicit release'
    'release:re-establish release at close behaviour'
  )
  if (( ! EUID )); then
    cmds+=( 'forcereserve:break reservation of tape drive held by other host' )
  fi
fi

_arguments -C "$args[@]" '(--help --version -V)1:operation:->operation' \
    '2:count:' && ret=0

[[ -n "$state" ]] && _describe -t operations 'operation' cmds && ret=0

return ret

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