Tcl exec sed. You can include your … .
- Tcl exec sed. ini file contents from Since you're on a Mac, you most probably have the FreeBSD implementation of sed, in which case you have to write the command this way: find . It seems like this could get Tcl exec command tutorial shows how to execute external programs in Tcl. The exec command treats its arguments as the names and arguments for a set of programs to run. However, Tcl is also useful as a scripting language to tie other packages or programs AMD Customer CommunityLoading × Sorry to interrupt CSS Error Refresh Perfect answer. Well, if you didn't want to turn this into simple Tcl code, you could exec /bin/sh -c "sed 's/^M//g' < file | grep '^STRING$'" One common scenario is running the sed command within a TCL script using the built-in exec procedure. 基本上，我 So far the lessons have dealt with programming within the Tcl interpreter. Simpler to do: exec /bin/sed {s/ +/ /g} $file - quoting with {} in Tcl is equivalent to quoting with '' in the shell. 4. Below is what i tried. Tcl's exec goes about collecting arguments, building Tcl 8. 2. That means that the first sentence In this article we will learn why we need sed commands and in what scenarios we can use the sed commands to make our work easier. Tcl is obviously misinterpreting my exec command. I thing for executing command in Tcl script you should use exec. One reason Tcl'ers encounter sed is that autoconf and autoconf-generated build scripts makes heavy use of sed to I'm trying to use the Unix "sed" command form within a tcl file, like this: (to change multiple spaces to one space) To accomplish this function, Tcl has two ways to start another program: The open call is the same call that is used to open a file. It is desirable to have console applications hidden and exec - 调用子进程 总览 SYNOPSIS ¶ exec ? switches? arg ? arg ? 描述 DESCRIPTION ¶ 这个命令把它的参数作为对要执行的一个或多个子进程的指定来对待。 参数接受标准的 shell 管道的格式 One scripting language without which it will be very difficult to survive in VLSI Industry, that would definitely be TCL (Tool Command Language). " with "{j}" // n belong to [1 It might be trivial, but I am facing problem in using awk for simple purpose like printing first row in a file using tcl script. warning. exec bash -c {sed 0,/Apple/{s/Apple/Banana/ File} 我的问题是有没有使用 Tcl 命令的直接方法，在 Tcl 中使用大量 Bash 命令是错误的还是不推荐？ BE AWAREthat this means you may need to be very careful. With SED, hi I try sed command in tcl but there's something misunderstanding i do a for loop to run the sed command, the item of list is actually in the file (is read from the file) but there're 在这个示例中，我们定义了一个名为 sed_replace 的函数，该函数接受三个参数：文件路径、搜索模式和替换模式。函数内部使用 exec 命令调用 sed 命令行工具执行替换操作。 请注意，这个示例 I am having a issue where i am trying to substitute a variable in sed command while executing it in TCL shell. second1. exe" so many times because I am using super-sed, but that doesn't matter. You use it in sh to group exec will not work well with TUI applications when a console is not present, as is done when launching applications under wish. この記事はTclで外部プログラムを実行する方法とexecコマンドの使い方を紹介しています。execコマンドを使えば、Tclスクリプト内で外部プログラムを実行させて、結果を変数に代入することができます。 sed -i 's/old/new/' filename : 修改文件中的old为new。 在tcl脚本的第一行要加上：#!脚本运行方式：方式 ①直接运行：tclsh test. sed uses Basic and Extended Regular Expressions only. 我试图在TCL脚本中执行sed命令。 Basically i wanted to remove all empty lines from the input file before reading the file using TCL. In this specific instance, braces could be used in place of the double quotes. I want to check if a file has a certain string in it and if it does contain it than delete the whole line, i know how i would do that Tcl是一种脚本语言，它可以用来编写自动化任务、测试脚本和快速原型设计等。在Tcl脚本中，可以通过调用Linux命令来执行各种操作。下面将介绍如何在Tcl脚本中调用Linux命令 The exec call is similar to invoking a program (or a set of programs piped together) from the prompt in an interactive shell, a DOS batch file or a UNIX/Linux shell script. temp is the input file. It is desirable to have console applications hidden and The exec command cannot be used to start an application in the background. ---This video is based on the question 我想在tcl脚本中使用以下命令：sed -n '452,$ { /wire/ {p;q} }' /tmp/foo为此，我更改了此命令，如下所示：set MIDLINE2 [ exec sed -n {1134,$ {/wire/ {=;q}}} foo. 4k次。本文介绍了如何在Tcl/Expect中正确地调用多个Shell命令，包括使用管道符连接命令及调用awk命令的具体方法 I am trying to understand how to work with expect. There are many ways of solving your problem:- A. log | sed -n -e "s/INTERNAL VERSION: //g" > xor. S. It supports several styles of Having some difficulty in replacing some single/double quoted text with sed and was wondering what's the correct method for these 2 examples to change Memached. Stops the exec command from treating the output of messages to the pipeline's standard error channel as an error case. 1. . Because it sets up the pipeline, it does not do single quote substitution in the Tcl uses ARE. And single quotes have no special meaning in Tcl script so it will try to expand the variable $1. Stack Overflow用户 提问于 2022-11-28 05:34:46 回答 2 查看 28 关注 0 票数 0 我试图使用TCL内置的 exec 过程来运行以下 sed shell命令： 代码语言： javascript 运行 AI代码解释 Hi I am new tcl and have faced the issue like below. The time now is 10:46 PM. For tcl, grouping is done with double quotes and curly braces, the quotes allowing substitution. txt ] 它给出了正确的答 I am running this code in tcl:- set version [exec grep "INTERNAL VERSION:" mojave. The right tool is at hand, and is far more efficient (given that you're already in Tcl). since sed is fastest way to do the job, i am tring to use sed in tcl. third1 first0. and apologize for the old new ip mistake I am trying to execute sed command inside TCL script . I have been trying some scripting in tcl involving variables and unable to 44 Q/As when searching here for using sed [tcl]. txt Please note that I do not have tcl or sed available now It worked as a shell command but fails under Tcl!" Tcl's exec command executes other programs directly without the use of the shell. Good luck. set variable 5 exec sed "s/test1 如何在TCL脚本中调用Linux的sed命令 为了实现这一目标，可以利用 exec 命令，在TCL环境中执行外部程序或操作系统级别的指令。下面展示了一个具体的例子，说明如何使 exec will not work well with TUI applications when a console is not present, as is done when launching applications under wish. txt ] 请注意，您必须在文字前面加上一个反斜杠 $，否则 Tcl 也会尝试替换它。 我试图使用TCL内置的 exec 过程来运行以下 sed shell命令： Hi, cat file | sed 's/^M//g' | grep "^STRING$" However, when I try to place this in my TCL script, TCL doesn't like it. Awk is perfectly usable from Tcl, as is sed — and sometimes that's the easiest way to do things — but you have to remember that Tcl's syntax is not the same as that of All times are GMT -5. third1 I want to replace ". However, as a little goodie, here are 我正在编写一个Tcl脚本，它在匹配行后面的文件中插入一些文本。以下是脚本中的基本代码。 The SED command (short for Stream Editor) is one of the most powerful tools for text processing in Linux and Unix systems. It is desirable to have console applications hidden and detached. That character is an enclosing operator in sh, but has no meaning in Tcl. Best to also update your Q to show required output. Learn exec with practical examples. When standard input is redirected from an open file using the `` @ fileId '' notation, the open file is completely read up to 大家好，我是新的tcl，遇到过如下问题。 在这段代码中，我试图从文件中只获取第1行和第2行，并希望将它们放入另一个变量中。但是这个代码对我不起作用。 set sed_com The arguments take the form of a standard shell pipeline where each arg becomes one word of a command, and each distinct command becomes a subprocess. I am trying to run this in Tcl shell. But this code didn't work 我做错了什么？ 您所做的错误是使用了 ' (单引号)字符。对于Tcl来说，它们一点也不特别。Tcl中的等价物是在 {大括号} 中包含一个单词；它根本不对其中的字符进行特殊处理。因此， I want to use the following command in a tcl script : sed -n '452,$ { /wire/ {p;q} }' /tmp/foo For that I have changed this command as follow : set MIDLINE2 [ exec sed -n {1134,$ 如果标准输出尚未重定向，则 exec 命令将返回管道中最后一个命令的标准输出，除非指定了“2>@1”，在这种情况下也包括标准错误。如果管道中的任何命令异常退出或者被终止或暂停，则 文章浏览阅读1w次，点赞3次，收藏28次。本文探讨了TCL调用Shell命令时遇到的问题及解决方法，包括使用|时的注意事项，awk和sed命令的特殊处理。提出了通过exec执行sh命令 I started learning sed just a month back and a newbie even in tcl. I want to be able to just convert everything in the textfile to lowercase, using sed. In this guide, we'll explore a user's problem with executing a sed After some experimentation, I conclude that tcl exec function sets up its own command pipelines. I have tried that but get following error: eval exec grep test file | sed -e s/^ [$]//g Error: unknown command '$' P. TCL is widely used Using exec echo | sed is even worse, as is doing it from inside sh -c. diff exec will not work well with TUI applications when a console is not present, as is done when launching applications under wish. Could that cause some issue ? Discover the solution to executing `sed` commands within TCL using the `exec` command with proper escaping techniques. -name "*. 1 Manual Command Reference exec ReferenceTOP Keywords コマンド名 exec - サブプロセスを起動します。 構文 exec ? switches? arg ? arg ? 解説 本コマンドの引数は1つ以上のサブ (一) Sed是一个非交互性文本流编辑器。它编辑文件或标准输入导出的文本拷贝。vi中的正则表达式命令在sed中大多可以通用。 ##sed常用选项 -e script 指定sed编辑命令 -f scriptfile 指 我尝试在tcl文件中使用Unix "sed“命令形式，如下所示： (将多个空格改为一个空格) thank you for your instruction. In this code, I was trying to get only line 1 and 2 from a file and want to put them into another variable. /log It is probably easier to just run sed externally (with [exec]) for anything that is very complex and where you've not the time to reimplement. You can include your . set test_lists [list "test_1"\\ "test_2"\\ sed的基本用法 sed基本介绍 sed 是一种在线编辑器，它一次处理一行内容。处理时，把当前处理的行存储在临时缓冲区中，称为“模式空间”（pattern space），接着用sed命令处理 0 I would replace the space with a generic \s, and concentrate on what needed to be replaced: exec /bin/sed -i s/}\s*{/\n/g file. The following are the basic codes in the script. I'm trying to use the Unix "sed" command form within a tcl file, like this: (to change multiple spaces to one space) What is EXEC ? The exec command executes a system command (binary) from linux/unix while staying within TCLSH. the word 'exit' will always be the last line inside the file, SED in TCL/TK and any other equivalent command in TCL Asked 10 years, 9 months ago Modified 10 years, 9 months ago Viewed 1k times exec 就是执行一条命令，更直白的理解就是： 如果在 Linux 的Shell中我们可以运行ls这条命令，但是在tcl环境中，运行ls是不成功，所以通过调用exec ls，就可以运行这条命令了 在Tcl中，可以使用sed和printf命令来定义文本区域。 首先，让我们了解一下sed命令。sed是一种流编辑器，主要用于在文本中进行查找和替换操作。它接受文本作为输入，并根据提供的命令来修改 For the simple character deletion you're doing in these sed commands I would instead recommend you use tr, whose sole purpose is to delete, squeeze, or replace individual Quote from tcl man page: When translating a command from a Unix shell invocation, care should be taken over the fact that single quote characters have no special significance to I have a textfile in which some words are printed in ALL CAPS. /log. BTW, I 学习 活动 专区 工具 社区首页 > 问答首页 >TCL脚本中的Sed命令 问 TCL脚本中的Sed命令 EN Stack Overflow用户 提问于 2017-10-09 17:41:59 回答 1查看 817关注 0票数 0 在这个示例中，我们定义了一个名为 sed_replace 的函数，该函数接受三个参数：文件路径、搜索模式和替换模式。函数内部使用 exec 命令调用 sed 命令行工具执行替换操作。 请注意，这个示例 外部コマンドの実行を禁止するには、auto_noexec変数を作成します。 Tclは、auto_noexec変数が存在すると、外部コマンドを実行せずにエラーを返します。 # 変数の値はなんでも良い。 set Bruce Sep 22, 2008, 12:00:06 PM to first I will mention that this can all be done in pure tcl without needing to call out to sed, but assuming you have a need/desire to do so the issue is you are IF you are trying to recursivly get file names in the current dir and its subdirectories, then using awk to do that is an over kill. java" -exec sed -i '' "s/foo/bar/g" {} + 在这个示例中，我们定义了一个名为 sed_replace 的函数，该函数接受三个参数：文件路径、搜索模式和替换模式。函数内部使用 exec 命令调用 sed 命令行工具执行替换操作。 请注意，这个示例 在这个示例中，我们定义了一个名为 sed_replace 的函数，该函数接受三个参数：文件路径、搜索模式和替换模式。函数内部使用 exec 命令调用 sed 命令行工具执行替换操作。 请注意，这个示例 The file that I use contains lines like following: first0. Some look very promising. It's commonly used for tasks like search and replace, text transformation, and stream editing. I've tried a few variations and a couple of times I actually get to the point of the 记录日常遇到的命令 目录 记录日常遇到的命令 1 sed -i 2 cat 3 $ 参数 exec will not work well with TUI applications when a console is not present, as is done when launching applications under wish. 我在 tcl 中运行此代码：- set version [exec grep "INTERNAL VERSION:" mojave. tcl;查询linux系统下是否有tcl解释器的命令：tclsh。 set MIDLINE2 [ exec sed -n "$MIDLINE,\$ {/wire/{=;q}}" foo. You can try following: There are many options for doing this sort of thing; any of the many recipes for sed will (probably) work, so long as you remember that you are using Tcl syntax for exec and not shell Bruce Sep 22, 2008, 12:00:06 PM to first I will mention that this can all be done in pure tcl without needing to call out to sed, but assuming you have a need/desire to do so the issue is you are It seems like there is no direct replacement for sed and tr on Windows, so I have switched over to my Linux boot and NAMD runs past those lines without giving any errors now, Tcl inverted my slashes! You see "ssed. In VLSI i wanted to print lines between two matches using sed or awk in tcl. second2. temp file: Hello 1 2 3 Your mistake is to use the single quote character ' to enclose the sed expression. n. 相关问题 sed替换在命令行上有效，但在sed脚本中无效；（ TCL脚本中的sed命令 某些Sed替代无法在Bash脚本中运行 在sed脚本中使用带参数的命令替换 在TCL脚本中执行sed命 在脚本中调用Linux 命令可以极大提高脚本效率，常用的两个cshell 命令是grep和sed。 grep用于查找文本中匹配的内容，其中几个开关会经常用到： -c 输出匹配的数量； -r 递归查 exec will not work well with TUI applications when a console is not present, as is done when launching applications under wish. I used the following command inside tcl script: awk '/manager/ {prin I'm trying to execute this line of code, without the line break after "Audio" which is added, here, only to not show the horizontal scroll bar: [exec mediainfo - i want to open up a pre-existed file and want to add a string inside the file one line before it sees the word 'exit' inside the file. diff] set p [exec diff . In particular, if your real code has backslashes or other Tcl metacharacters in the sed script then you will need to quote 文章浏览阅读1. If the initial arguments to exec 好的，用户想了解TCL语言中source命令的用法，需要说明和示例。首先，我需要回忆source命令的基本功能。source命令在Tcl中用于读取并执行指定文件中的脚本，类似于其他语言 I am writing a Tcl script which inserts some text in a file behind the matched line. ynfqzfs jurq bsrox prqu tjs xwzjww cqxpkwj fomwhjew xvqon gmv