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Unix 系统实用脚本：进程管理、定时任务验证与日志处理

1. 按名称杀死进程

在 Linux 和部分 Unix 系统中，killall命令十分实用，它能杀死所有匹配指定模式的运行进程。若系统没有该命令，可通过 shell 脚本模拟实现。

1.1 脚本代码

#!/bin/sh # killall - Sends the specified signal to all processes that match a # specific process name. # By default it only kills processes owned by the same user, unless # you're root. Use -s SIGNAL to specify a signal to send to the process, # -u user to specify the user, -t tty to specify a tty, # and -n to only report what'd be done, rather than doing it. signal="-INT" # default signal user="" tty="" donothing=0 while getopts "s:u:t:n" opt; do case "$opt" in # Note the trick below: kill wants -SIGNAL but we're asking # for SIGNAL so w