Questions tagged [utilities]

small programs used on the command line to do a specific job

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1answer
576 views

Installing the BlueZ Utilities

I need to install the bluez utilities. On this site there are listed six utilities in a table, so I downloaded the latest bluez package bluez-5.33.tar.xz and extracted it. But how can I install these ...
1
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1answer
2k views

Password protect a PDF file with AES 256

I can't find a free/open-source software that password protects my PDFs with AES 256. pdftk just offers 128-bit strength.. In fact I didn't find any other tool that encrypts PDFs. What tool may I ...
5
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1answer
288 views

Why do some utilities parse operands before options?

According to several sources, the UNIX utility guidelines specify that operands should always be processed after options: utility_name[OPTIONS][operands...] Some older UNIX utilities are known to ...
0
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1answer
311 views

Languages to use for console tools - Go, Rust, Javascript? [closed]

I'm planning to write a data cruncher command line tool, I'm considering Go, Rust and Javascript. But I'm afraid of jeopardising the project by using something not stable enough or painful to deploy. ...
11
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2answers
3k views

Can hd and od replace each other?

hd and od are both dump viewers of binary content. Can hd be used wherever od is and vice versa?
1
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1answer
3k views

how to use ser2net control port

man ser2net says that by running ser2net with a -p flag I can execute a number of commands. If I run ser2net -p 12345 and, then, lsof -i :12345, I can see the service on that port. How would I, for ...
1
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3answers
1k views

Interactive cd (directory browser)

Sometimes when working in deeply nested file hierarchies (e.g. Java code) I find it annoying to traverse from one leaf to another. My usual cd-up looks like: $ cd ../../.. # Oops, not enough $ cd .. #...
3
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2answers
115 views

nm program - why such name?

Where does the name of nm come from? The IEEE standard defines nm as: nm - write the name list of an object file Is nm an abbreviated form of word name/names? Or does it have a completely different ...
8
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2answers
11k views

What does chmod stand for?

In order to memorize a command, it is usually a good idea to learn where it's name comes from. For example, cp comes from copy. usermod means "User Modifiy" (at least I guess so). Where does chmod ...
2
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2answers
115 views

Log new files in a directory

Is there a tool, which lets me know about the last newly created files? The still common way of using a hierarchically file system makes it hard to save files in different places, so sometimes I sort ...
1
vote
1answer
140 views

Is there a tool that automatically inserts and updates a script header block for e.g. shell or Python scripts?

I found scripts by a former admin who scripted quite nice things with Bash or Python. All his scripts are well formatted and equipped with a always similar looking "script header" or "code header", I ...
11
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2answers
9k views

sponge from moreutils - what's the difference to shell redirect? useful examples?

> brew install moreutils ==> Downloading https://homebrew.bintray.com/bottles/moreutils-0.55.yosemite.bottle.tar.gz #################...
3
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2answers
2k views

How to read lsusb?

What is the vendor id and what is the product id in the output of lsusb? ➜ lsusb Bus 001 Device 018: ID 0781:5576 SanDisk Corp. Bus 001 Device 011: ID 0e0f:000b VMware, Inc. Bus 001 Device 001: ID ...
8
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3answers
3k views

Combine input from multiple files/pipes without clobbering lines or blocking?

Is there a tool that will take input from multiple files or pipes and write it to stdout, without blocking on reads, such that individual input lines come out intact? I basically want to multiplex a ...
0
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2answers
87 views

Tool for managing local development repositories [closed]

I'm a web developer and I work with various languages and projects (who doesn't?). I've cloned many of these projects/repositories locally to various directories. Now, with dozens of projects cloned ...
-1
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2answers
201 views

if I delete usr/bin/chattr would other components of the system be affected?

I would like to delete chattr, as in /usr/bin/chattr, I am using Linux Mint, do you think other parts of the system would be affected?
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0answers
162 views

Difference between fsarchiver and dump

What is the difference between dump and fsarchiver? Are there features in dump which are not covered by fsarchiver? Can both backup to tape storage for example?
2
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1answer
2k views

Relation between system calls and shell commands/utilities

In POSIX, Does a system call function often but not always have a command or utility in shell? Is there some rule of thumb about what kinds of system calls have corresponding commands or utilities ...
7
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7answers
30k views

Console tool to test internet bandwidth

I'm looking for a tool that will test my internet connection bandwidth and create an simple report like speedtest does. Do you know some program/tool that do this? Something with CentOS packages ...
12
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2answers
4k views

Alternative to watch which support colors

I have a command (phpunit) which has a colored output. According to the watch, command I should be able to use the --color flag to allow color rendering to pass through. However, this isn't working. ...
3
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2answers
114 views

Select added lines from file

I have two versions of a file where the newer one has some lines added. The files are sorted (think of wordlists) and I want to print out the newly added lines (given file1 and file2). I know how to ...
2
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1answer
2k views

Is there a difference between gunzip -c and gunzip in terms of system utilization?

Is there a difference between zcat/gunzip -c and gunzip apart from the obvious one that one outputs it to the terminal and the other decompresses it to a file? I'm looking from a CPU utilization ...
3
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4answers
8k views

Count tabs per line in text file with utils

I have a tab-tabulated file. I would like to check if every line has the same number of tabs. For first step, I'd like to print the number of tabs for each individual line. I've tried grep -o '\t' ...
23
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5answers
93k views

How to recover data from a bad SD card?

I have a 4GB SD card with some family pictures on it that I need to recover. When I insert the card into my card reader, it shows up as an unknown 32MB device (as /dev/sde) and cannot be mounted. When ...
1
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1answer
186 views

Can I check how much energy a USB device is consuming?

Is there any utility I could use to check how much energy a USB device is consuming, for a given time frame?
4
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1answer
17k views

Ubuntu runuser command?

I am creating a bash script that requires to run commands as a specific user. As a result I am using the command: runuser I have tested this script and it works perfectly in Ubuntu Server 14.10. ...
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0answers
637 views

Change encoding of a text file in-place: iconv alternative? [duplicate]

Apparently, iconv is unable to use the same file as input and output file. Other tools, e.g. sed, have an -i switch that allows "updating" a file in-place. (Under the hood, temporary files are ...
4
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4answers
394 views

How do I show the numeric character sequence of a string?

Is there a command either standalone or in vi or similar (can be gui) that will show me the numeric sequence of a string? Input: The cat hopped in a box. Output: T h e c a t h o p p e d ...
2
votes
1answer
205 views

Tool to give only the built linux source code

Linux is large complex piece of software. A running kernel in the system would not be using all the code. I'm looking for a tool which can give me the source code needed for the .config I used to ...
7
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2answers
47k views

How do I get UUENCODE to work?

I have a server that I have inherited that has an older version of Redhat installed due to software requirements and now there is a need to use UUENCODE to allow email attachments. The uuencode and ...
0
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1answer
37 views

2.6.35 armel header files?

Debian does not seem to include a package linux headers 2.6.35-9 for the armel chipset - compiling drivers work, but insmod, and insmod -f is failing with a version mismatch and invalid moduel format. ...
4
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2answers
2k views

Convert file with integers written in ascii to binary file of integers

I have a file that contains a long list of integers written in ascii separated with newlines, like such: -175 2 -19345 345592 -45 2355 etc... I want to convert this file into a "binary" file ...
5
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2answers
785 views

Factor is too large

I'm trying to use a factor utility but it tells me that number is too large. Is there any utility that can do what factor doing but not tells that number is too large?
0
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0answers
725 views

Tools to inspect local network, and find local IP address of device?

This is my specific context (Latex/TikZ code for the diagram below): Now this local "Router", has broke down several times, and several different devices have had its role (sometimes they have a ...
1
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1answer
602 views

Is expect tool availabe for ARM platform

I need to get expect (tool for automating interactive applications) for the ARM platform. Is it a readily cross compiled to ARM and is it available? I tried googling but was unable to get the ...
3
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1answer
3k views

alternative for digest -a sha256 command from solaris in linux

I have file from solaris which have digest -a sha256. But this command is not working in linux. I want the alternative for this command.
3
votes
2answers
4k views

Phrase Express Equivalent for Linux?

Is there some sort of auto text-insertion program with macros, similar to PhraseExpress for Windows in Linux? In case you've never seen this application it offers the following features: Organize ...
1
vote
1answer
2k views

On why touch, mv, etc., won't create subdirectories “as needed”

There are many Unix commands that will fail unless some subdirectory already exists, even though it would be a trivial matter for such commands to go ahead and create the missing subdirectory before ...
-6
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1answer
1k views

What does -p do when creating directories

What does the following command do to my system? $ mkdir -p /tmp/aes I typed the following command into my command line and it executes as expected. I know the folder is created as when I attempt ...
2
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2answers
1k views

How can I get the version of the pgrep & pkill commands?

I looked at the manpages and there is no -v or --version argument for pgrep or pkill. How can i get some info on the version? I'm asking because on my version of Ubuntu man pgrep is giving me a ...
7
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1answer
82 views

Swap (exchange) two big files in limited environment

Let's say I have two flash memory devices 1GB capacity each. Let's also say each device contains one big file ~ 1GB size. Assuming, I have limited (64MB) RAM and no hard disk drive, what is the ...
0
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3answers
391 views

How to find the difference in tokens in two strings using Unix tools?

I have two strings as below- token1, token2, token3, token4, token5, token6, token8, token9, token10 token2, token7, token4, token3, token5, token6, token8, token10, token9 Visually, I can see ...
1
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0answers
444 views

List/query Open X11 Display Connections?

I am hitting this bug: NEWT errors when closing sketch on Linux · Issue #1651 · processing/processing · GitHub, when using Processing on Linux (Ubuntu 11.04); my messages are: X11Util.Display: ...
2
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1answer
42 views

Utility to tag regions of audio files

For example, say I have a recording with lots of noise and people speaking, I'd like to tag areas where people are speaking with a 1, and by default everywhere else is 0. Then save this file ...
75
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3answers
43k views

What is the point of the `yes` command? [duplicate]

This question concerns the yes command found in UNIX and Linux machines: Basically, what is the point (if any) and history of this tool? Are there practical applications for it? Can an example be ...
7
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2answers
966 views

What commands have -h human readable option, and how can I enable it by default w/env variable?

I'm tired of using aliases or typing -h. I want human readable output 24/7. Is there a way to enable it all the time for all commands that offer it?
2
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2answers
142 views

Is there a distribution-independent tool to autocompile+install dependencies?

I like the way e.g. ArchLinux' yaourt (or if you're not that lazy, abs+makepkg; and from what I read so far, Gentoo's ebuild as well) automatically take care of obtaining, compiling and installing ...
3
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2answers
338 views

When do `sort -k 2,3b` and `sort -k 2,3` differ?

The POSIX description of the -b flag for the sort command is Ignore leading characters when determining the starting and ending positions of a restricted sort key. I can understand the use for ...
2
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1answer
70 views

Checking the order of items in a shell environment variable

I am wanting to check that a certain directories always appear after other directories in an environment variable. List items are separated by a colon, as with the PATH variable. This is not simply ...
2
votes
1answer
2k views

Is there any tool to view live statistics about a Radeon GPU?

I've checked out GPU usage monitoring (CUDA), but are there similar tools for AMD/ATI cards? Or kind of universal tools? I want to check out if my applications use the 256 MB of RAM of the video card ...