This is an example of a script that uses exit status values.
The following script uses SnapDrive for UNIX exit status values:
#!/bin/sh # This script demonstrates a SnapDrive # script that uses exit codes. RET=0; #The above statement initializes RET and sets it to 0 snapdrive snap create -dg vg22 -snapname vg22_snap1; # The above statement executes the snapdrive command RET=$?; #The above statement captures the return code. #If the operation worked, print #success message. If the operation failed, print #failure message and exit. if [ $RET -eq 0 ]; then echo "snapshot created successfully" else echo "snapshot creation failed, snapdrive exit code was $RET" exit 1 fi exit 0;
If RET=0, the command executed successfully and the script outputs the following:
# ./tst_script snap create: snapshot vg22_snap1 contains: disk group vg22 containing host volumes lvol1 snap create: created snapshot betty:/vol/vol2:vg22_snap1 snapshot created successfully
If RET= a value other than zero, the command did not execute successfully. The following example shows typical output:
# ./tst_script 0001-185 Command error: snapshot betty:/vol/vol2:vg22_snap1 already exists on betty:/vol/vol2. Please use -f (force) flag to overwrite existing snapshot snapshot creation failed, snapdrive exit code was 4