Linux/unix shell script monitors disk free space

A shell script that monitors the disk's free space under Linux is essential for a system administrator or DBA. Here is a sample of the shell script that monitors disk space space for your reference.

1. Free space for monitoring disk shell script

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2. [Email protected]:~/dba_scripts/custom/bin> more ck_fs_space.sh
4. #!/bin/bash
6. # ------------------------------------------------------------------------------+
8. # CHECK FILE sysytem SPACE by THRESHOLD |
10. # Filename:ck_fs_space.sh |
12. # Desc: |
14. # The script to check for file system space by threshold |
16. # Once usage of the disk beyond the threshold, a mail alert would be sent. |
18. # Deploy it by crontab. e.g. per-min |
20. # Usage: |
22. #./ck_fs_space.sh <percent> </filesystem [/filesystem2]> |
24. #                                                                                   |  
26. # Author:robinson |
28. # blog:http://blog.csdn.net/robinson_0612 |
30. # ------------------------------------------------------------------------------+
32. #
34. # -------------------------------
36. # Set Environment here
38. # ------------------------------
42. If [-f ~/.bash_profile]; Then
44. . ~/.bash_profile
46. Fi
50. Export host= ' hostname '
52. Export MAIL_DIR=/USERS/ROBIN/DBA_SCRIPTS/SENDEMAIL-V1. About
54. Export mail_list=' [email protected] '
56. Export mail_fm=' [email protected] '
58. Tmpfile=/tmp/ck_fs_space.txt
60. Alert=n
64. # --------------------------------
66. # Check The parameter
68. # --------------------------------
72. max=$1
76. if [! ${2}]; then
78. echo "No filesystems specified."
80. echo "Usage:ck_fs_space.sh//u01"
82. Exit 1
84. Fi
88. # --------------------------------
90. # Start to check the disk space
92. # --------------------------------
96. While [ "${2}"]
98. Do
100. Percent= ' Df-p ${2} | tail-1 | awk ' {print $} ' | cut-d'% '-f1 '
102. if [ "${percent}"-ge "${max}"]; Then
104. Alert=y
106. Break
108. Fi
110. Shift
112. Done
116. # ------------------------------------------------------------------------
118. # When a partition is above the threshold then send mail with DF output
120. # ------------------------------------------------------------------------
124. if [! "${alert}" = ' n '];then
126. Df-h > $tmpfile
128. mail_sub="Disk usage beyond the threshold ${max} on ${host}."
130. $mail _dir/sendemail-u ${mail_sub}-F $mail _fm-t $mail _list-o Message-file=${tmpfile}
132. Fi
136. Exit

2. Script description
A, the script uses the SendEmail tool to send messages.
b, the use of the way is "Usage:ck_fs_space.sh//u01".
C. A while loop is used in the script to determine, on a per-partition basis, whether the free space for all the specified partitions exceeds the threshold.
D. Send the message for exceeding the threshold and attach the usage of disk space on the current server.

Ext.: http://blog.csdn.net/leshami/article/details/8893943

Linux/unix shell script monitors disk free space