isvalidip() #@ USAGE: isvalidip DOTTED-QUAD { case $1 in ## reject the following: ## empty string ## anything other than digits and dots ## anything not ending in a digit "" | *[!0-9.]* | *[!0-9]) return 1 ;; esac ## Change IFS to a dot, but only in this functio...
to point to just after the last character parsed. */staticchar*get_history_word_specifier(spec, from, caller_index)char*spec, *from;int*caller_index; {registerinti = *caller_index;intfirst, last;intexpecting_word_spec =0;char*result;/* The range of words to return doesn't exist yet. ...
character whose value is the hexadecimal value (one or two hexadecimal digits). 要得到更多关于 printf命令的信息以及允许你格式化输出的方法,请参阅 Bash Info 页面. 8.2. 捕获用户输入8.2.1. 使用内建 read 命令8.2.2. 提示用户输入 以下例子向你展示了使用提示来向用户解释应该输入什么. 71/91 ...
character whose value is the hexadecimal value (one or two hexadecimal digits). 要得到更多关于 printf命令的信息以及允许你格式化输出的方法,请参阅 Bash Info 页面. 8.2. 捕获用户输入8.2.1. 使用内建 read 命令8.2.2. 提示用户输入 以下例子向你展示了使用提示来向用户解释应该输入什么. 71/91 ...
compare according to string numerical value -R, --random-sort sort by random hash of keys --random-source=FILE get random bytes from FILE -r, --reverse 降序 reverse the result of comparisons --sort=WORD sort according to WORD: general-numeric -g, human-numeric -h, ...
When applied to a string-valued variable, value is expanded and appended to the variable's value. Positional Parameters A positional parameter is a parameter denoted by one or more digits, other than the single digit 0. Positional parame- ters are assigned from the shell's arguments when it ...
if [[ -z "$string" ]]; then echo "String is empty" elif [[ -n "$string" ]]; then echo "String is not empty" fi 字符串引号 str="czx" echo "Hello ${str}" # 显示 Hello czx echo 'Hello ${str}' # 显示 Hello ${str} 函数 get_name() { echo "czx" } echo "My nam...
-s, –set=String It sets the time set by the String value. -f or –file=DateFile It is used to process multiple dates. -I or –iso-8601[=Timespec] It is used to create an ISO 8601 compliant date/time string output. -r or –reference=File It is used to display the last modific...
Remove Character from String in Bash sed Add Line to End of File Bash Print Array Bash Log Output to File Echo Multiple Lines in Bash Bash Split String and Get Last Element Bash Escape Single Quote Bash Create Folder if Not Exists Bash Append to Array Sort CSV by Column in BashAuthor...
[vwx]*: Support completing arg of last bundled short option (bbd6296) fio: New completion (c92a426) ngrep: Add "any" to -d arg completions (507d593) tshark: Get available interfaces from -D output (8d7d24d) pylint: Option arg completion improvements (fe69cb5) mplayer: Associate with...