= "x" ; then fail "list_things_in_dir called with too many arguments" fi # Use quotes when accessing $dir in order to preserve # any spaces that might be in the directory name. dir="${dirs[$1]}"; # Catch directory names that start with a dash - they # confuse pushd. if ...
:n Examine the next file (from the list of files given in the command line). If a number N is specified, the N-th next file is examined. :p Examine the previous file in the command line list. If a number N is specified, the N-th previous file is examined. :x Examine the first...
<<高级Bash脚本编程指南>> 一本深入学习shell脚本艺术的书籍 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...
Tildes are expanded in file names as described below under Tilde Expansion in the EXPAN- SION section. When bash is invoked as an interactive login shell, or as a non-interactive shell with the --login option, it first reads and executes commands from the file /etc/profile, if GNU Bash-...
Please give your payload a unique, descriptive and appropriate name. Do not use spaces in payload, directory or file names. Each payload should be submit into its own directory, with-or_used in place of spaces, to one of the categories such as exfiltration, phishing, remote_access or recon...
Donotdepend on always using “--”between options and pathnames as the primary countermeasure against filenames beginning with “-”. Some guidance recommends this, but I think it's bad advice. You have to do this witheverycommand for this approach to work, without error; this doesn't wor...
If you have a list of default packages you want installed every time you install a new version, we support that too -- just add the package names, one per line, to the file $NVM_DIR/default-packages. You can add anything npm would accept as a package argument on the command line....
Working with spaces and quotation marks Spaces are used for separating commands, options, and arguments. Use quote marks to tell the Bash shell to ignore all special characters, of which a white space is a special character. When the Bash shell sees the first quote mark, it ignores special ...
Let's put that to work. Imagine you have 1000 files with spaces in their filename and you want to replace each space by an undescore "_". replace_source=' 'replace_target='_'forfilenamein./*.csv;donew_filename=${filename//$replace_source/$replace_target}mv"$filename""$new_file...
In the following example, you are simply picking the columns from a text file with a predictable format and printing the values that you want to use to populate an/etc/hostsfile. Here the assumption is that the file has columns delimited by spaces or tabs and that there arenospaces in th...