_upword() #@ USAGE: upword STRING { local word=$1 while [ -n "$word" ] ## loop until nothing is left in $word do to_upper "$word" _UPWORD=$_UPWORD$_UPR word=${word#?} ## remove the first character from $word done } upword() { _upword "$@" printf "%s\n" "$_UP...
In bash, there are several ways to truncate a string, including by character count, specified length, or from the beginning of the string. The syntax for truncating a string variable in bash is as follows: ${<string-name>:<starting-position>:<length>} ...
OPTIONS In addition to the single-character shell options documented in the description of the set builtin command, bash inter- prets the following options when it is invoked: -c string If the -c option is present, then commands are read from string. If there are arguments after the string...
@查尔斯达菲,你说得对。似乎我不理解tldp.orgstringZ=abcABC123ABCabc; echo ${stringZ:-4} Defaults to full string, as in ${parameter:-default}上的例子。bash语法很误导人,${3: -1}和${3:-1}之间只有一个空格,我得到了两个不同的东西… @Piotrekkr,我强烈推荐使用bash hacker参考(wiki.bash hack...
Trim all white-space from string and truncate spacesThis is an alternative to sed, awk, perl and other tools. The function below works by abusing word splitting to create a new string without leading/trailing white-space and with truncated spaces....
EN# -*- coding:utf-8 -*- #用户输入 && 格式化输出 #getpass 模块是内置的，可以将输入的内容...
the Unicode (ISO/IEC 10646) character whose value is the hexadecimal value HHHHHHHH (one to eight hex digits) \cx a control-x character The expanded result is single-quoted, as if the dollar sign had not been present. A double-quoted string preceded by a dollar sign ($"string") will ...
filename="bash.string.txt" echo ${filename#*.} echo ${filename%.*} $ ./shortest.sh After deletion of shortest match from front: string.txt After deletion of shortest match from back: bash.string In the first echo statement substring ‘*.’ matches the characters and a dot, and # st...
, the *: pattern matched everything up to the last colon, and the ## operator is used to remove all of it, leaving only the last element of the string you?. You can replace the colon(:) with any character that we want to match. Let"s see another example where you want to get ...
The inner query removes the largest substring that starts with a non-space character from the end of the string.This leaves us with the leading whitespaces.The outer query removes them, by matching each at the beginning of the string. ...