_repeat() { #@ USAGE: _repeat string number _REPEAT=$1 while (( ${#_REPEAT} < $2 )) ## Loop until string exceeds desired length do _REPEAT=$_REPEAT$_REPEAT$_REPEAT ## 3 seems to be the optimum number done _REPEAT=${_REPEAT:0:$2} ## Trim to desired length } repeat() { ...
case结构用于多种情况的条件判断,类似于其它语言的switch/case,但从语法结构上有很大的不同,常用格式。2 3 4 5 6 7 8 9 10 11 12 case 字符串 in 模式) 语句 ;; 模式2 | 模式3) 语句 ;; *) 默认执行的 语句 ;; esac例如2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 #!/bin/bash ...
# 每一句指令以换行或分号隔开:echo 'This is the first line'; echo 'This is the second line'# 声明一个变量:Variable="Some string"# 下面是错误的做法:Variable = "Some string"# Bash 会把 Variable 当做一个指令,由于找不到该指令,因此这里会报错。# 也不可以这样:Variable= 'Some string'# ...
echo– sends the following string or command to the specified file (if no file is specified, the string will output back to your terminal screen. In other words, if you typeecho hello, the Terminal will print “Hello” on the next line; hence the term ‘echo’! ) Related Posts: learnin...
/bin/bash# ---params---name=$1switch_domain(){conf_file="/opt/challenge/ctf.sh"sed -i"s/Bytectf.*!/Bytectf,$name!/""$conf_file"}# 调用函数switch_domain 发现这里利用ops.sh利用sed命令借助传入的参数进行替换ctf.sh里面从Bytectf开始到!结尾的字符串,替换完成后执行ctf.sh就能进行命令执行...
强类型(变量) 关键字: 事先转换成可执行格式 c,c++,JAVA,C# 动态语言:解释型语言 on th...
/bin/bash## Script to split a string based on the delimitermy_string="Ubuntu;Linux Mint;Debian;Arch;Fedora"IFS=';'read-ramy_array<<<"$my_string"#Print the split stringfor i in "${my_array[@]}"doecho $idone 1. 2. 3. 拆分字符串的部分如下:...
typedef struct word_desc{char*word;/* Zero terminated string. */int flags;/* Flags associated with this word. */}WORD_DESC; WORD_DESC表示一个单词,字符指针word指向一个以\0结尾的字符串,整型成员flags定义了该单词的类型。 当前源码中定义了二十多种单词类型,如W_HASDOLLAR表示该单词包含扩展字符$,...
下面内容是在windows系统下进行的操作,对应的软件是由安装git软件时自带的。其中所说的bash为Git bash,详细见博文:版本控制系统学习笔记1--《windows下安装和配置git》 1、在bash命令行中,用vim打开一个文件:vim 文件名 注:如果当前工作目录中存在该文件,则打开该文件,否则以此文件名在当前目录下新建文件并打开。
on jobs that are running the background,and on foreground jobs that were killed by anything ! exceptSIGINT (and possibly SIGTERM and SIGPIPE). */ switch(JOBSTATE (job)) { *** *** 4318,4321 *** --- 4351,4355 --- elseif(IS_FOREGROUND job)) { + /* foregroundjobs...