检查Bash脚本中是否挂载了卷的最佳方法是什么？

#1 楼

#2 楼

if mountpoint -q /mnt/foo 
then
   echo "mounted"
else
   echo "not mounted"
fi

mountpoint -q /mnt/foo && echo "mounted" || echo "not mounted"

#3 楼

#These functions return exit codes: 0 = found, 1 = not found

isMounted    () { findmnt -rno SOURCE,TARGET "" >/dev/null;} #path or device
isDevMounted () { findmnt -rno SOURCE        "" >/dev/null;} #device only
isPathMounted() { findmnt -rno        TARGET "" >/dev/null;} #path   only

#where: -r = --raw, -n = --noheadings, -o = --output

if isPathMounted "/mnt/foo bar";      #Spaces in path names are ok.
   then echo "path is mounted"
   else echo "path is not mounted"
fi

if isDevMounted "/dev/sdb4"; 
   then echo "device is mounted"
   else echo "device is not mounted"
fi

#Universal:
if isMounted "/mnt/foo bar"; 
   then echo "device is mounted"
   else echo "device is not mounted"
fi

if isMounted "/dev/sdb4";
   then echo "device is mounted"
   else echo "device is not mounted"
fi

#4 楼

case $(df  $mount)
in
  $(df  /)) echo $mount is not mounted ;;
  *) echo $mount has a non-root filesystem mounted on it ;;
esac

#5 楼

  if ! grep -q /backup /proc/mounts ; then
    if ! mount /backup ; then
      echo "failed"
      exit 1
    fi
  fi
  echo "suceeded."
  # do stuff here

#6 楼

#7 楼

#!/bin/bash
if [[ $(stat -c "%d" /mnt) -ne $(stat -c "%d" /mnt/foo) ]]; then
    echo "Somethin mounted there I reckon"
fi

#8 楼

dev=`df -P /thing/thingy | awk 'BEGIN {e=1} $NF ~ /^\/.+/ { e=0 ; print  ; exit } END { exit e }'` && {
    echo "Mounted via: $dev"
} || {
    echo "Not mounted"
}

Mounted via: host:/real_thing

mp=`df -P /thing/thingy | awk 'BEGIN {e=1} $NF ~ /^\/.+/ { e=0 ; print $NF ; exit } END { exit e }'` && {
    echo "Mounted on: $mp"
} || {
    echo "Not mounted"
}

#9 楼

 awk -v status=1 ' == "/opt" {status=0} END {exit status}' /proc/mounts

# and you can use it in and if like so:

if awk -v status=1 ' == "/opt" {status=0} END {exit status}' /proc/mounts; then
  echo "yes"
else
  echo "no"
fi
 

#10 楼

if awk '{print }' /proc/mounts | grep -qs "^/backup$"; then
    echo "It's mounted."
else
    echo "It's not mounted."
fi

#11 楼

#12 楼

volume="/media/storage"
if mount|grep $volume; then
echo "mounted"
else
echo "not mounted"
if

#13 楼

if grep /mnt/foo /proc/mounts > /dev/null 2>&1; then
        echo "Mounted"
else
        echo "NOT mounted"
fi

#14 楼

mount \
    | cut -f 3 -d ' ' \
    | grep -q /mnt/foo \
  && echo "mounted" || echo "not mounted"

#15 楼

#16 楼

if [[ -f /something/check_mount ]]; then
   echo "Mounted
   RC=$?
else
   Echo "Not mounted"
   RC=0
fi
exit $RC

#17 楼

if not node['docker-server']['mountpoint'] == "none"
  execute "set up mount" do
    user "root"
    command "mount -t ext4 #{node['docker-server']['mountpoint']} #{node['docker-server']['data-dir']}"
    not_if "grep -qs #{node['docker-server']['data-dir']} /proc/mounts"
  end
end

default['docker-server']['mountpoint'] = "/dev/vdc"
default['docker-server']['data-dir'] = "/data"