command[dmtsai@study~]$!!选项与参数:number:执行第几笔指令的意思;command:由最近的指令向前搜寻『指令串开头为 command』的那个指令,并执行;!!:就是执行上一个指令(相当于按↑按键后,按 Enter)[dmtsai@study~]$ history66man rm67alias68man history69history[dmtsai
查阅 网页原文内容 on Command root# curl www.sina.com 保存/下载 指定URL的网页 on FileSystem/Disk 如果要把这个网页保存下来,可以使用-o参数(output),这就相当于使用wget命令了。 不带文件路径值时,默认下载到当前窗口所在的本地路径。 root# curl -o [Dir/文件名] www.sina.com 若想显示下载进度条,...
of each created directory to the default type --context[=CTX] like -Z, or if CTX is specified then set the SELinux or SMACK security context to CTX --help display this help and exit --version output version information and exit GNU coreutils online help: <http://www.gnu.org/software/...
get_cursor_pos() { # 用法: get_cursor_pos IFS='[;' read -p $'\e[6n' -d R -rs _ y x _ printf '%s\n' "$x $y" }示例用法:# Output: X Y $ get_cursor_pos 1 8转换将十六进制颜色转换为RGB示例函数:hex_to_rgb() { # Usage: hex_to_rgb "#FFFFFF" # hex_to_rgb "...
## Colorize the grep command output for ease of use (good for log files)## alias grep = 'grep --color=auto' alias egrep = 'egrep --color=auto' alias fgrep = 'fgrep --color=auto' #4:让计算器默认开启 math 库 alias bc = 'bc -l' ...
--dump-header FILE Write the headers to FILE--egd-fileFILE EGD socket pathforrandom data (SSL)--engine ENGINE Crypto engine (use"--engine list"forlist) (SSL)--expect100-timeout SECONDS Howlongtowaitfor100-continue (H)-f, --fail Fail silently (no output at all) on HTTP errors (H)-...
问在运行命令bash之前保存输入ENgpedit.msc－－－---组策略 sndrec32－－－---录音机 nslooku...
CAT(1) User Commands CAT(1) NAME cat - concatenate files and print on the standard output SYNOPSIS cat [OPTION]... [FILE]... DESCRIPTION Concatenate FILE(s) to standard output. With no FILE, or when FILE is -, read standard input. -A, --show-all equivalent to -vET -b, --number...
you can install eagerly loaded files incompatdir(see a couple of questions further down for more info. To get the path ofcompatdirfor the current system, the output ofpkg-config bash-completion --variable compatdircan be used) and install a completion for the commands to override our complet...
3. Using tail Command 4. Using awk Command 5. Using sed Command 6. Using mapfile Command 7. Using head Command 8. Performance 9. Conclusion 1. Overview In this article, we will see how to get last line of output in Bash using tail, awk, sed, mapfile, and head commands with variou...