Linux命令行与shell脚本编程大全_第3版.mobi，mobi版本，可以在电子书阅读
2021-11-25 09:25:49
3.89MB
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Mastering Linux Shell Scripting(2nd) 英文azw3 第2版
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2021-11-24 16:28:45
4.37MB
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编写一段bash Shell程序，根据从键盘输入的学生成绩，显示相应的成绩等级，其中60分以下为“Failed！”，60-70分为“Passed！”......
2021-11-24 15:52:00
340B
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Shell脚本高级编程教程，希望对你有所帮助。
Example 10-23. Using continue N in an actual task：
1 # Albert Reiner gives an example of how to use "continue N":
2 # ---------------------------------------------------------
3
4 # Suppose I have a large number of jobs that need to be run, with
5 #+ any data that is to be treated in files of a given name pattern in a
6 #+ directory. There are several machines that access this directory, and
7 #+ I want to distribute the work over these different boxen. Then I
8 #+ usually nohup something like the following on every box:
9
10 while true
11 do
12 for n in .iso.*
13 do
14 [ "$n" = ".iso.opts" ] && continue
15 beta=${n#.iso.}
16 [ -r .Iso.$beta ] && continue
17 [ -r .lock.$beta ] && sleep 10 && continue
18 lockfile -r0 .lock.$beta || continue
19 echo -n "$beta: " `date`
20 run-isotherm $beta
21 date
22 ls -alF .Iso.$beta
23 [ -r .Iso.$beta ] && rm -f .lock.$beta
24 continue 2
25 done
26 break
27 done
28
29 # The details, in particular the sleep N, are particular to my
30 #+ application, but the general pattern is:
31
32 while true
33 do
34 for job in {pattern}
35 do
36 {job already done or running} && continue
37 {mark job as running, do job, mark job as done}
38 continue 2
39 done
40 break # Or something like `sleep 600' to avoid termination.
41 done
42
43 # This way the script will stop only when there are no more jobs to do
44 #+ (including jobs that were added during runtime). Through the use
45 #+ of appropriate lockfiles it can be run on several machines
46 #+ concurrently without duplication of calculations [which run a couple
47 #+ of hours in my case, so I really want to avoid this]. Also, as search
48 #+ always starts again from the beginning, one can encode priorities in
49 #+ the file names. Of course, one could also do this without `continue
2021-11-23 12:41:33
2.74MB
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使用：1、vim firewallOpenPort.sh
2、将里面的端口号更改
3、保存退出
4、赋执行权限chmod 744 ./firewallOpenPort.sh
5、执行 ./firewallOpenPort.sh
2021-11-16 18:00:35
211B
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mysql8，linux版全自动安装shell脚本，一键安装；适合自动化安装环境，学习shell编程。可读性高
2021-11-11 16:01:49
4KB
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