写脚本实现,可以用shell,perl等。...脚本实现把/tmp/目录下所有创建超过7天的文件删除 find /tmp -mtime +7 -exec rm -rf {} \; 26...设计一个shell程序,在2012年12月23日凌晨3点备份并压缩前一天/svn目录的所有内容,存放在/root/bak目录里,且文件名为如下形式svn.2008.05.06.tar.gz,试写脚本。 1.5...
echo$1# Unquoted variablesfind . -name *.ogg# Unquoted find/grep patternsrm"~/my file.txt"# Quoted tilde expansionv='--verbose="true"'; cmd$v# Literal quotes in variablesforfin"*.ogg"# Incorrectly quoted 'for' loopstouch$@# Unquoted $@echo'Don't forget to restart!' # Singlequote c...
# find will not truncate filenames containing spaces find $DIR -type f | while read file; do # using POSIX class [:space:] to find space in the filename if [[ "$file" = *[[:space:]]* ]]; then # substitute space with "_" character and consequently rename the file mv "$file...
n Repeat previous search, for N-th line containing the last pattern. If the previous search was modified by ^N, the search is made for the N-th line NOT containing the pattern. If the previous search was modified by ^E, the search continues in the next (or previous) file if not sat...
entriesin$PATH are used tofindthe directory containing FILENAME. If any ARGUMENTS are supplied, they become the positional parameters when FILENAME is executed. ###在当前shell中,从FILENAME中读取并执行命令。在$PATH中的项目是被用作查找包括FILENAME的目录。当FILENAME被执行时,如果有参数供应,他们将成...
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# string containing descriptive error message # --- echo"${PROGNAME}:${1:-"Unknown Error"}"1>&2 exit1 } # Example call of the error_exit function. Note the inclusion # of the LINENO environment variable. It contains the current # line number. echo"Example ...
shell 使用find处理bash脚本的文件夹名(包含空格和')失败printf的%q生成的输出被正确地加了引号以供...
find_lock.sh - tries to find if a lockfile is used in the given or current working directory by taking snapshots of the file list before and after a prompt in which you should open/close an application foreach_path_bin.sh - runs each binary of the given name found in $PATH with the...
A unit of text that is the result of one of the shell expansions. After expansion, when executing a command, the resulting fields are used as the command name and arguments. filename A string of characters used to identify a file.