ShellCheck can make suggestions to improve style: [[ -z $(find /tmp | grep mpg) ]]# Use grep -q insteada >>log; b >>log; c >>log# Use a redirection block insteadecho"The time is `date`"# Use $() insteadcddir; process *;cd..;# Use subshells insteadecho$[1+2]# Use sta...
"which is not read as a comment. First line is also a place where you put your interpreter which is in this case: /bin/bash. Here is our first bash shell script example: #!/bin/bash # declare STRING variable STRING="Hello World" #print variable on a screen echo $STRING Navigate to...
find-unique-completion-pair 2.10 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.99 1.90 1.3 1.99-alt3 1.2 1.99-alt2 1.1 1.0-alt2 1.0 克隆/下载 克隆/下载 HTTPSSSHSVNSVN+SSH下载ZIP 该操作需登录 Gitee 帐号,请先登录后再操作。 立即登录没有帐号,去注册 ...
Concatenated string of 'Bash, ' and 'Script!' is: 'Bash, Script!' Explanation: In the exercise above, We define three functions: "string_length()", "substring_extraction()", and "string_concatenation()". "string_length()" function calculates the length of the given string using ${#str...
grep: This is a command-line utility for searching plain-text data sets for lines that match a regular expression. -n: This option is used to display line numbers along with the matching lines. "word": This is the string pattern to search for. In this case, it's "word". ...
Version 3.7.2 2005/11/16 作者:Mendel Cooper mail:thegrendel@theriver.com 这本书假定你没有任何脚本或一般程序的编程知识,但是如果你有相关的知识,那么你将很容易 达到中高级的水平...all the while sneaking in little snippets of UNIX? wisdom and lor... ...
A Unix shell is both a command interpreter and a programming language. As a command interpreter, the shell provides the user interface to the rich set ofGNUutilities. The programming language features allow these utilities to be combined. Files containing commands can be created, and become comman...
The script allows for simple manipulation of a file, allowing users to find and replace strings as needed. By running the script, a new bash file is created which replaces the specified string with a new one, ensuring that the information in the file is up-to-date and accurate. This ...
The $BASH_REMATCH environment variable is a read-only Bash Array containing the values matched by the extended regular expression at the right side of the =~ binary operator in a double-bracket [[ conditional expression. Captured groups are stored in the BASH_REMATCH array variable. The strin...
git_log_empty_commits.sh - find empty commits in git history (eg. if a git filter-branch was run but --prune-empty was forgotten, leaking metadata like subjects containing file names or other sensitive info) git_files_in_history.sh - finds all filename / file paths in the git log his...