Run a command only if another command returns a zero exit status.
仅当另一个命令返回零退出状态时才运行某个命令。
Run a command only if another command returns a non-zero exit status.
仅当另一个命令返回非零退出状态时才运行某个命令。
By default, Purify does not modify the normal exit status of your program.
默认情况下，Purify是不会修改您程序的正常退出状态的。
This is because as long as the connection is successful, the last exit status will be zero.
这是因为只要连接成功，最后的退出状态码就是零。
If the first character of a command is a hyphen (-), the remainder of the line is executed, but its exit status is ignored.
如果一个命令的第一个字符是连字符(-)，那么该行中剩余的命令都会执行，不过其退出状态会被忽略。
The most common value should be SPE_EXIT (the program was successful and an exit status has been stored in the structure).
最常见的值应该是SPE_EXIT(程序成功执行，在这个结构中已经保存了一个退出状态)。
As you can use any computing language that manages command-line arguments and exit status, the possibilities are almost endless!
正如您可以使用管理命令行参数和退出状态的任何计算语言一样，存在各种各样的可能性。
Use the && control operator to combine two commands so that the second is run only if the first command returns a zero exit status.
使用&&控制操作符来组合两个命令，以便仅当第一个命令返回零退出状态时才运行第二个命令。
Similarly, the || control operator separates two commands and runs the second command only if the first command returns a non-zero exit status.
类似地，||控制操作符分隔两个命令，并且仅当第一个命令返回非零退出状态时才运行第二个命令。
If you set this variable, TCSH displays the exit status whenever a script or program returns a non-zero value, thereby indicating a potential error.
如果设置这个变量，那么当脚本或程序返回非零值时tcsh会显示退出状态，这会指出潜在的错误。
If you set this variable, TCSH displays the exit status whenever a script or program returns a non-zero value, thereby indicating a potential error.
如果设置这个变量，那么当脚本或程序返回非零值时tcsh会显示退出状态，这会指出潜在的错误。
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