Recent questions tagged Unix

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unix - How to generate a sequence of dates given starting and ending dates using AWK of BASH scripts?

I have a data set with the following format The first and second fields denote the dates (M/D/YYYY) of starting ... 2002 12/31/2001 12/30/2001 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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734 views

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unix - Setting LD_LIBRARY_PATH from inside R

I have installed an R package but, in order to load it via library, the LD_LIBRARY_PATH needs to be set ... solution is editing that variable. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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610 views

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unix - Debian $PATH variable change

How can I change the $PATH variable in Debian? I tried to change /etc/profile but this affected only normal ... know where could be problem? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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614 views

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unix - How can I diff two files with full context?

I have two files with slight differences. A normal diff will show me the differences between the files. With -c or ... as a single, large hunk? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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587 views

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unix - Setting up pipelines reading from named pipes without blocking in bash

I'm looking to call a subprocess with a file descriptor opened to a given pipe such that the open() call ... solution, should one be possible. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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613 views

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unix - How can I add a footer to the bottom of each page of a postscript or pdf file in linux?

So I'd like to add a "footer" (an attribution) to the bottom of every page of a pdf file I am ... is proving to be quite complicated... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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730 views

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unix - Create a custom symbolic link to a library at install time with CMake

Under Linux with CMake, I'm building a shared library libIex-2_0.so.10.0.1 ADD_LIBRARY (Iex SHARED [*.cpp] ) ... way to create such a link ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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807 views

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unix - Create a custom symbolic link to a library at install time with CMake

Under Linux with CMake, I'm building a shared library libIex-2_0.so.10.0.1 ADD_LIBRARY (Iex SHARED [*.cpp] ) ... way to create such a link ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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507 views

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unix - How can I print the lines in STDIN in random order in Perl?

I want to do the inverse of sort(1) : randomize every line of stdin to stdout in Perl. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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657 views

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unix - How to create a pseudo-tty for reading output and writing to input

I am using fork() and execvp() to spawn a process that must believe it is connected to an interactive terminal ... snippet on how to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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485 views

1 answer

unix - How do I include a blank line between files I'm concatenating with "cat"?

I want to cat all the files in a directory, but include some spacer between each one. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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561 views

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unix - Why should a Java programmer care about year 2038 bug?

Year 2038 Bug is all over the web, But this seems to be a unix issue. How will this affect java Date ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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632 views

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unix - Sort by third column leaving first and second column intact in Linux?

I need to sort a flat file by third column leaving first column intact [First column is already sorted] (in ... . Can someone please help ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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644 views

1 answer

unix - "Variable $foo will not stay shared" Warning/Error in Perl While Calling Subroutine

Update3: If you like this posting please don't upvote me but upvote the genius answer by DVK below. I have ... Line 49 } return @all_ccomp; } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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784 views

1 answer

unix - how to use sed from a tcl file

I'm trying to use the Unix "sed" command form within a tcl file, like this: (to change multiple spaces to ... terminal What am I doing wrong? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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588 views

1 answer

unix - Bash script containing binary executable

Is it possible to write a bash script, which would contain a binary executable program inside? I mean a script, ... . Is it possible? Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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645 views

1 answer

unix - Android NDK mmap call broken on 32-bit devices after upgrading to Lollipop

I'm trying to grab 784 MiB of memory. Yes, I know that is a lot for a 32-bit phone, but the following ... flags 0x21, errno 12(Out of memory)) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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554 views

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unix - using bash: write bit representation of integer to file

I have a file with binary data and I need to replace a few bytes in a certain position. I've come up with ... to binary (possibly from a hex)? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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511 views

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unix - cat file | ... vs ... <file

Is there a case of ... or context where cat file | ... behaves differently than ... <file? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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920 views

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unix - Best Method to run a Java Application as a *nix Daemon or Windows Service?

I am looking for the best method to run a Java Application as a *NIX daemon or a Windows Service. I' ... friendly" licensed products out there. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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679 views

1 answer

unix - How can I merge PDF files (or PS if not possible) such that every file will begin in a odd page?

I am working on a UNIX system and I'd like to merge thousands of PDF files into one file in order to print ... place to write is an even page. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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642 views

1 answer

unix - Symlink in windows XP

The question is how to make the similar thing like symlink in windows like in *nix. It's really hard to write ... I'm looking for console app. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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648 views

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unix - Macro `__unix__` not defined in MacOS X

I noticed that in MacOS X (Lion), the macro __unix__ is not defined. Since MacOS has its roots in BSD UNIX, ... to be considered a UNIX system? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

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unix - How do I mount a filesystem using Python?

I'm sure this is a easy question, my Google-fu is obviously failing me. How do I mount a filesystem using Python, ... a nice, easy os.mount(). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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627 views

1 answer

unix - Print lines between two regex using sed

I have a text file which contains multiple sections and I want to print one of those sections. Part of ... lines in the screenshots section? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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653 views

1 answer

unix - How to remove duplicate lines from a file

I have a tool that generates tests and predicts the output. The idea is that if I have a failure I can compare ... line tool that can do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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602 views

1 answer

unix - How do I tell what type my shell is

How can I tell what type my shell is? ie, whether it's traditional sh, bash, ksh, csh, zsh etc. Note that ... that does that, that'd be great. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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667 views

1 answer

unix - Joining two consecutive lines using awk or sed

How would I join two lines using awk or sed? I have data that looks like this: abcd joinabcd ... below: joinabcdabcd joinefghefgh joinijklijkl See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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