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

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2
votes
2answers
54 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
70 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 ...
0
votes
2answers
606 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
votes
2answers
304 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
votes
3answers
2k 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
votes
0answers
130 views

How to check if Nginx + Ruby on Rails web application is down?

I am very new to *nix system. I have below setup: OS - Ubuntu 14.14 Web Server - Nginx with Passenger Web Application Ruby on Rails web application Please tell me what tools to use to achieve: ...
8
votes
2answers
692 views

Finding a file type assuming wrong extension

I have an image archive I keep up. Sometimes, the sites I pull them from reformat the file while keeping the extension the same, most often making PNG images into JPG's that are still named ".png". ...
0
votes
2answers
57 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 ...
5
votes
0answers
192 views

What are the differences between xdotool and xautomation?

xdotool and xautomation are two command line X11 automation tools. I've used the former for a while and only recently found out about the existence of the latter, and I'm curious to know what someone ...
-1
votes
2answers
54 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?
1
vote
0answers
77 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?
1
vote
0answers
510 views

What does mt -f /dev/st0 erase do exactly on a tape drive?

What does mt -f /dev/st0 erase do exactly with a (LTO-6) tape drive at /dev/st0? It takes hours and seems to write many times. Does it write random data on the tape several times to delete the ...
32
votes
5answers
16k views

Is there any option with 'ls' command that I see only the directories?

Sometimes, I need to check only the directories not files. Is there any option with the command ls? Or is there any utility for doing that? EDIT: I'm using Mac OS X, and ls -d gives me . even though ...
4
votes
1answer
379 views

What tool to use to view an object file?

I'm reading an old book on linkers and loaders and it has images of object code. But I can't figure out what tools is used to display the contents of these files. I'd appreciate if someone could point ...
2
votes
1answer
447 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
votes
7answers
27k 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 ...
9
votes
2answers
2k 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
votes
2answers
100 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 ...
1
vote
1answer
169 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 ...
2
votes
4answers
4k 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' ...
10
votes
5answers
47k 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
vote
1answer
101 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?
37
votes
4answers
58k views

Usage of dash (-) in place of a filename

For a command, if using - as an argument in place of a file name will mean STDIN or STDOUT. But in this example, it creates a file with the name -: echo hello > - How can I make - in this ...
1
vote
1answer
4k 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. ...
3
votes
1answer
990 views

Problem with install command to copy a whole directory

So I have a repo with some of my config files and I'm trying to create a makefile to install them in the homedir. The problem I have is that when I run the following command straight in bash install ...
0
votes
0answers
24 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
votes
4answers
357 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
90 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 ...
11
votes
4answers
870 views

Store output of a command into a ring-buffer

I've got a long-running command that generates a lot of output on stdout. I'd like to be able to retain, for instance, only the last three days or the last gibibyte (avoiding cutting lines in the ...
6
votes
2answers
30k 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 ...
20
votes
4answers
10k views

Setting the window dimensions of a running application

I'm trying to start an application within Ubuntu (xfce or gnome) and via the command line and was wondering if there's a generic way to set the dimensions of a given window of a given app that is ...
0
votes
1answer
25 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. ...
7
votes
2answers
6k views

Does hexdump respect the endianness of its system?

On my machine I get the following output when I run these commands: $ echo foos > myfile $ hexdump myfile 6f66 736f 000a The output from hexdump is little-endian. Does this mean that my machine ...
18
votes
8answers
13k views

Tool in UNIX to subtract dates

Is there any tool in Solaris UNIX (so no GNU tool available) to subtract dates? I know that in Linux we have gawk that can subtract one date from another. But in Solaris the maximum we have is nawk ...
4
votes
2answers
1k 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 ...
6
votes
4answers
3k views
4
votes
2answers
251 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
votes
0answers
243 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 ...
0
votes
1answer
362 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 ...
2
votes
1answer
811 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.
0
votes
2answers
2k 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
527 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
votes
1answer
373 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
votes
2answers
466 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 ...
3
votes
2answers
213 views

Tool to force use FILE instead of RAM

I'm wondering why there is no such tool like ram2swap, similar to cpulimit in parts. E.g. There is program daemon.bin. Let's create temporary swap file ( 1 Gb ): % dd if=/dev/zero of=tmp.swap ...
1
vote
4answers
242 views

What are considered utilities and applications?

Commands like cp, ls, chmod, pwd etc are called as utilities. I seem to not able to define what kind of things are called applications. Let's abandon GUI to make the definition more precise.
7
votes
1answer
75 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
votes
3answers
147 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
vote
0answers
194 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: ...
1
vote
3answers
192 views

Use Unix tools to look for a definition block in an XML.

I am using an XML that has definitions in this form - <definition name="ticketOpen" extends="ticketUpdate"> <put name="title" value="Open Ticket" /> <put name="mainForm" ...