shell -- include 文件

最新推荐文章于 2021-06-07 17:39:20 发布

转载最新推荐文章于 2021-06-07 17:39:20 发布 · 1.2w 阅读

文章标签：

#include #shell #path #service #input #function

shell 专栏收录该内容

13 篇文章

订阅专栏

本文介绍了Shell脚本中使用include方法来引入其他脚本文件的技术，包括如何通过相对路径加载函数和变量，以及如何在sysv启动文件中利用此方法。此外还提供了几个示例，如状态检查和进程终止等。

shell文件 include 的方法——“ 。文件”

[macg@localhost testshell]$ ls
testget testlib

[macg@localhost testshell]$ cat testlib
#!/bin/bash
test() {
echo "hello "
}

[macg@localhost testshell]$ cat testget
#!/bin/bash

. /home/macg/testshell/testlib include 文件
test 调用include文件里的函数

[macg@localhost testshell]$ sh testget
hello

shell include 不止可以包含函数，也可以包含全局变量

[macg@localhost testshell]$ cat testlib
#!/bin/bash

test() {
echo "hello "
}

TESTPRARAM="THIS IS A TEST"

[macg@localhost testshell]$ cat testget
#!/bin/bash

. /home/macg/testshell/testlib
test
echo $TESTPRARAM

[macg@localhost testshell]$ sh testget
hello
THIS IS A TEST

实际上sys v的启动文件都采用此种办法include 事先定义在/etc/rc.d/init.d/functions中的函数
[root@localhost macg]# cat /etc/init.d/sendmail
#!/bin/bash

# Source function library.
. /etc/rc.d/init.d/functions

for in 语句include *.sh文件的方法

for i in /etc/profile.d}
        local pid

        # Test syntax.
        if [ "$#" = 0 ] ; then
                echo $"Usage: status {program}"
                return 1
        fi

        # First try "pidof"
        pid=`pidof -o $$ -o $PPID -o %PPID -x $1 || /
             pidof -o $$ -o $PPID -o %PPID -x ${base}`
        if [ -n "$pid" ]; then
                echo $"${base} (pid $pid) is running..."
                return 0
        fi

        # Next try "/var/run/*.pid" files
        if [ -f /var/run/${base}.pid ] ; then
                read pid < /var/run/${base}.pid
                if [ -n "$pid" ]; then
                        echo $"${base} dead but pid file exists"
                        return 1
                fi
        fi
        # See if /var/lock/subsys/${base} exists
        if [ -f /var/lock/subsys/${base} ]; then
                echo $"${base} dead but subsys locked"
                return 2
        fi
        echo $"${base} is stopped"
        return 3
}

[root@mm testtip]# vi test.sh

#!/bin/bash
. ./functions

echo -n "input:"
read para
status $para
result=$?
echo "$result"

[root@mm testtip]# sh test.sh
input:bgpd
bgpd (pid 3430) is running...
0

[root@mm testtip]# sh test.sh
input:xxx
xxx is stopped
3

killproc()

以名字的方式杀掉一个进程

[root@mm testtip]# vi test.sh

#!/bin/bash
. ./functions

echo -n "input:"
read para
killproc $para
result=$?
echo "$result"

[root@mm testtip]# ps -ef
UID        PID PPID C STIME TTY          TIME CMD
root      4769     1 0 14:47 ?        00:00:00 rpc.mountd
root      4795     1 0 14:47 ?        00:00:00 /usr/sbin/dhcpd
root      4942 4408 0 16:32 pts/0    00:00:00 ps –ef

[root@mm testtip]# sh test.sh
input:dhcpd
0 OK ]

[root@mm testtip]# ps -ef
UID        PID PPID C STIME TTY          TIME CMD
root      4769     1 0 14:47 ?        00:00:00 rpc.mountd
root      4950 4408 0 16:34 pts/0    00:00:00 ps -ef

confirm() 系统暂停，输入y/n/c

# Confirm whether we really want to run this service
confirm() {
[ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=yes
while : ; do
      echo -n $"Start service $1 (Y)es/(N)o/(C)ontinue? [Y] "
      read answer
      if strstr $"yY" "$answer" || [ "$answer" = "" ] ; then
         return 0
      elif strstr $"cC" "$answer" ; then
         rm -f /var/run/confirm
         [ -x /usr/bin/rhgb-client ] && /usr/bin/rhgb-client --details=no
         return 2
      elif strstr $"nN" "$answer" ; then
         return 1
      fi
done
}

[machome@mm testtip]$ cat test.sh
#!/bin/bash
. ./functions

confirm
result=$?
echo "$result"

[machome@mm testtip]$ sh test.sh
Start service (Y)es/(N)o/(C)ontinue? [Y] y
0
[guan@mm testtip]$ sh test.sh
Start service (Y)es/(N)o/(C)ontinue? [Y] n
1
[guan@mm testtip]$ sh test.sh
Start service (Y)es/(N)o/(C)ontinue? [Y] c
2

/etc/profile中的的函数pathmunge()，给$PATH增加一个路径

#!/bin/bash

pathmunge () {
        if ! echo $PATH | /bin/egrep -q "(^|:)$1($|:)" ; then
           if [ "$2" = "after" ] ; then
              PATH=$PATH:$1
           else
              PATH=$1:$PATH
           fi
        fi
}

[root@vm test]# vi tip.sh

pathmunge /home/macg
pathmunge /home/mac
echo $PATH

[root@vm test]# ./tip.sh
/home/mac:/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/bin:/usr/bin:/usr
/X11R6/bin:/home/macg/bin:/home/macg
[root@vm test]#