This construction replaces all occurrences of';'(the initial//means global replace) in the stringINwith' '(a single space), then interprets the space-delimited string as an array (that's what the surrounding parentheses do). 这个构造替换了字符串中所有出现的“;”(初始//意味着全局替换),然后...
_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() { ...
https://ryanstutorials.net/bash-scripting-tutorial/bash-if-statements.php https://stackoverflow.com/questions/4277665/how-do-i-compare-two-string-variables-in-an-if-statement-in-bash http://www.masteringunixshell.net/qa36/bash-how-to-add-to-array.html https://www.cyberciti.biz/faq/linux-u...
BASH_VERSION Expands to a string describing the version of this instance of bash. COMP_CWORD An index into ${COMP_WORDS} of the word containing the current cursor position. This variable is available only in shell functions invoked by the programmable completion facilities (see Programmable ...
Duplicate: Adding double quotes while string concatenation in bash Join several lines to create a string separated by a specific character Joining Texts Using Explicit Tab and Line Break Characters Why can’t I concatenate two variables in a shell script?
But the string is divided using-as the delimiter, in our case, and to access the first field, we pass the argument1to the-foption, and we do the same to access the second field by passing2to the-foption. The values are assigned to theip_oneandip_twovariables, respectively. Theprintf...
EN常用的内置命令忽略，来看看shell编程中其他一些重要的内置命令： 1、help：显示所有内置命令列表，或显示一个具体命令的用法。 -s： 表示列出命令的语法格式 例子： help -s help help: help [-dms] [pattern ...] 2、echo：用来显示一行文字。默认自动换行。 -n：取消自动换行。 -e：让字符串中的特殊...
Bash provides a one-dimensional array variables. See also: When calling a function, quote the variable otherwise bash will not see the string as atomic. The separator is variable $IFS. There is: ... Bash - (Builtin|Intern|System|Reserved|Shell) variable name Reserved variable name are nam...
(str-replace STRING FIND REPLACE)- Replace all occurrences of the stringFINDinSTRINGwith the stringREPLACE. (str-split STRING SPLIT-CHARACTER)- SplitSTRINGinto a list of strings on the single charactersSPLIT-CHARACTER. (str-pos HAYSTACK NEEDLE)- Returns the position of stringNEEDLEin stringHAYSTACK...
Useful to take a large generated AWS config.ini from aws_sso_configs.sh and then split it into subdirectories for direnvs aws_s3_bucket.sh - creates an S3 bucket, blocks public access, enables versioning, encryption, and optionally locks out any given user/group/role ARNs via a bucket ...