A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
-bash/zsh: tcsh: command not found # Windows (WSL2) sudo apt-get update sudo apt-get install tcsh # Debian apt-get install tcsh # Ubuntu apt-get install tcsh # Alpine apk add tcsh # Arch Linux pacman -S tcsh # Kali Linux apt-get install tcsh # CentOS yum install tcsh # Fedora dnf install tcsh # OS X brew install tcsh # Raspbian apt-get install tcsh # Dockerfile dockerfile.run/tcsh # Docker docker run cmd.cat/tcsh tcsh
tsch 也称为 - TENEX C Shell，和 csh - C Shell 是两种不同的 Unix / Linux 命令 Shell，tsch 是 csh 的一种改进和扩展，由 Paul Placeway 和 Chris Zimmerman 开发，旨在修复一些 csh 的问题和限制。它最早出现在 TENEX 操作系统上，因此得名 TENEX C Shell。
tcsh 不同于其他的 shell(如 bash)，因为控制结构更符合程序设计语言的格式。如 tcsh 的 test 条件的控制结构是表达式，而不是 Linux 命令，得到的值是逻辑值 true 或 false，tcsh 的表达式与 C 语言中的表达式基本相同。
tcsh [-bcdefFimnqstvVxX] [-Dname[=value]] [arg ...] tcsh -l
If the first argument (argument 0) to the shell is ‘-’ then it is a login
shell. A login shell can be also specified by invoking the shell with the
-l flag as the only argument.
The rest of the flag arguments are interpreted as follows:
-b Forces a “break” from option processing, causing any further shell
arguments to be treated as non-option arguments. The remaining
arguments will not be interpreted as shell options. This may be
used to pass options to a shell script without confusion or
possible subterfuge. The shell will not run a set-user ID script
without this option.
-c Commands are read from the following argument (which must be
present, and must be a single argument), stored in the command
shell variable for reference, and executed. Any remaining
arguments are placed in the argv shell variable.
-d The shell loads the directory stack from ~/.cshdirs as described
under Startup and shutdown, whether or not it is a login shell. (+)
-Dname[=value]
Sets the environment variable name to value. (Domain/OS only) (+)
-e The shell exits if any invoked command terminates abnormally or
yields a non-zero exit status.
-f The shell does not load any resource or startup files, or perform
any command hashing, and thus starts faster.
-F The shell uses fork(2) instead of vfork(2) to spawn processes. (+)
-i The shell is interactive and prompts for its top-level input, even
if it appears to not be a terminal. Shells are interactive without
this option if their inputs and outputs are terminals.
-l The shell is a login shell. Applicable only if -l is the only flag
specified.
-m The shell loads ~/.tcshrc even if it does not belong to the
effective user. Newer versions of su(1) can pass -m to the shell.
(+)
-n The shell parses commands but does not execute them. This aids in
debugging shell scripts.
-q The shell accepts SIGQUIT (see Signal handling) and behaves when it
is used under a debugger. Job control is disabled. (u)
-s Command input is taken from the standard input.
-t The shell reads and executes a single line of input. A ‘\’ may be
used to escape the newline at the end of this line and continue
onto another line.
-v Sets the verbose shell variable, so that command input is echoed
after history substitution.
-x Sets the echo shell variable, so that commands are echoed
immediately before execution.
-V Sets the verbose shell variable even before executing ~/.tcshrc.
-X Is to -x as -V is to -v.
--help Print a help message on the standard output and exit. (+)
--version
Print the version/platform/compilation options on the standard
output and exit. This information is also contained in the version
shell variable. (+)
tcsh 启动交互式 shell 会话：
tcsh
启动 tcsh 交互式 shell 会话而不加载启动配置：
tcsh -f
tcsh 执行具体命令：
tcsh -c "echo 'tcsh is executed'"
tcsh 执行特定脚本：
tcsh path/to/script.tcsh
tcsh 检查特定脚本是否存在语法错误：
tcsh -n path/to/script.tcsh
tcsh 从 stdin 执行特定命令：
echo "echo 'tcsh is executed'" | tcsh