trapcommandsignal [signal ...] 其中command是在接收到任何列出的signal时要执行的命令或脚本。如果command是空字符串,那么接收到信号时将忽略该信号。 使用trap捕捉和处理信号 捕捉并执行命令 假设你想在脚本接收到SIGINT信号(通常是Ctrl+C)时执行特定的清理操作,比如打印一条消息并退出脚本。你可以这样写: #!/bin...
unix command trap can somebody help me about the following usage of "trap". i know what "trap" do, but i don't known the usage in the Script below :"trap ... ; ; trap - 0 1 2 3 15 ; exit 2" 0 1 2 3 15"what does "trap -" do ?example of a SHELL Scripttest_prozed...
trap命令de参数分为两部分,前一部分是接收到指定信号时将要采取de行动,后一部分是要处理de信号名。 trapcommand signal 它you三种形式分别对应三种不同de信号回应方式。 第一种: trap"commands" signal-list 当脚本收到signal-list清单内列出de信号时,trap命令执行双引号中de命令。 第二种: trap signal-list trap...
Command to displayperltrapmanual in Linux:$ man 1 perltrap NAME perltrap - Perl traps for the unwary DESCRIPTION "use warnings" -w "use strict" Awk Traps awk • A Perl program executes only once, not once for each input line. You can do an implicit loop with"-n"or"-p". ...
Set a trap which, on shell error or shell exit, deletes atemporary filexyz$$. Related commands csh— The C shell command interpreter. exit— Exit the command shell. ksh— The Korn shell command interpreter. sh— The Bourne shell command interpreter....
6881492.2.010.trap.txtis a trap file whose process and thread is running on partition 10. You can generate trap files on demand using thedb2pdcommand with the-stack allor-dumpoption. In general, though, this should only be done as requested by IBM Software Support. ...
The SNMP TRAP command sends a TRAP PDU to an SNMP agent. Operand Descriptions -Ci Specifies to send an INFORM request PDU to an SNMP agent or manager instead of a TRAP request PDU. This option is only valid for SNMP Version 2c and 3. ...
command(1) comp_err(1) compare(1) composite(1) compress(1) config.guess(1) config.sub(1) config_data(1) conflict(1) conjure(1) constype(1) continue(1) convert(1) convmv(1) corelist(1) cp(1) cp(1g) cpack(1) cpan(1) cpan2dist(1) cpanp(1) cpio(1) cpp(1) cpp(1) cpu...
A built-in function of the Bourne Shell and KornShell on UNIX systems. The ability to handle EXIT traps in the KornShell style is an extension to the POSIX.2 and XPG standards. NOTE This is a special built-in command of the MKS KornShell. AVAILABILITY PTC MKS Toolkit for Power Use...
As seen in the image below, the MOTD banner displays “PivotBox” as well as an options command. These appear to be custom-set by the attacker as we witnessed many edits to /etc/motd and the user’s .ashrc file (see history section below). This file is the user’s profile co...