Question:
Write a command that finds the Linux file by using your search path and checks each directory on it for an executable with the file name youâre looking for.
Article: 7 commands to find Linux files
Source: https://www.networkworld.com/article/3268768/linux/finding-what-you-re-looking-for-on-linux.html (Links to an external site.)
find
The most obvious is undoubtedly the find command, and find has become easier to use than it was years ago. It used to require a starting location for your search, but these days, you can also use find with just a file name or regular expression if youâre willing to confine your search to the local directory.
$ find e*
empty
examples.desktop
In this way, it works much like the ls command and isn’t doing much of a search.
For more relevant searches, find requires a starting point and some criteria for your search (unless you simply want it to provide a recursive listing of that starting pointâs directory. The command find . -type f will recursively list all regular files starting with the current directory while find ~nemo -type f -empty will find empty files in Nemoâs home directory.
$ find ~nemo -type f -empty
/home/nemo/empty
locate
The name of the locate command suggests that it does basically the same thing as find, but it works entirely differently. Where the find command can select files based on a variety of criteria â name, size, owner, permissions, state (such as empty), etc. with a selectable depth for the search, the locate command looks through a file called /var/lib/mlocate/mlocate.db to find what youâre looking for. That db file is periodically updated, so a locate of a file you just created will probably fail to find it. If that bothers you, you can run the updatedb file and get the update to happen right away.
$ sudo updatedb
mlocate
The mlocate command works like the locate command and uses the same mlocate.db file as locate.
which
The which command works very differently than the find and locate commands. It uses your search path and checks each directory on it for an executable with the file name youâre looking for. Once it finds one, it stops searching and displays the full path to that executable.
The primary benefit of the which command is that it answers the question, âIf I enter this command, what executable file will be run?â It ignores files that arenât executable and doesnât list all executables on the system with that name â just the one that it finds first. If you wanted to find all executables that have some name, you could run a find command like this, but it might take considerably longer to run the very efficient which command.
$ find / -name locate -perm -a=x 2>/dev/null
/usr/bin/locate
/etc/alternatives/locate
In this find command, weâre looking for all executables (files that cen be run by anyone) named âlocateâ. Weâre also electing not to view all of the âPermission deniedâ messages that would otherwise clutter our screens.
whereis
The whereis command works a lot like the which command, but it provides more information. Instead of just looking for executables, it also looks for man pages and source files. Like the which command, it uses your search path ($PATH) to drive its search.
$ whereis locate
locate: /usr/bin/locate /usr/share/man/man1/locate.1.gz
whatis
The whatis command has its own unique mission. Instead of actually finding files, it looks for information in the man pages for the command you are asking about and provides the brief description of the command from the top of the man page.
$ whatis locate
locate (1) – find files by name
If you ask about a script that youâve just set up, it wonât have any idea what youâre referring to and will tell you so.
$ whatis cleanup
cleanup: nothing appropriate.
apropos
The apropos command is useful when you know what you want to do, but you have no idea what command you should be using to do it. If you were wondering how to locate files, for example, the commands âapropos findâ and âapropos locateâ would have a lot of suggestions to offer.
$ apropos find
File::IconTheme (3pm) – find icon directories
File::MimeInfo::Applications (3pm) – Find programs to open a file by mimetype
File::UserDirs (3pm) – find extra media and documents directories
find (1) – search for files in a directory hierarchy
findfs (8) – find a filesystem by label or UUID
findmnt (8) – find a filesystem
gst-typefind-1.0 (1) – print Media type of file
ippfind (1) – find internet printing protocol printers
locate (1) – find files by name
mlocate (1) – find files by name
pidof (8) – find the process ID of a running program.
sane-find-scanner (1) – find SCSI and USB scanners and their device files
systemd-delta (1) – Find overridden configuration files
xdg-user-dir (1) – Find an XDG user dir
$
$ apropos locate
blkid (8) – locate/print block device attributes
deallocvt (1) – deallocate unused virtual consoles
fallocate (1) – preallocate or deallocate space to a file
IO::Tty (3pm) – Low-level allocate a pseudo-Tty, import constants.
locate (1) – find files by name
mlocate (1) – find files by name
mlocate.db (5) – a mlocate database
mshowfat (1) – shows FAT clusters allocated to file
ntfsfallocate (8) – preallocate space to a file on an NTFS volume
systemd-sysusers (8) – Allocate system users and groups
systemd-sysusers.service (8) – Allocate system users and groups
updatedb (8) – update a database for mlocate
updatedb.mlocate (8) – update a database for mlocate
whereis (1) – locate the binary, source, and manual page files for aâ¦
which (1) – locate a command
Wrap-up
The commands available on Linux for locating and identifying files are quite varied, but they’re all very useful.
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Question:
Write a command that finds the Linux file by using your search path and checks each directory on it for an executable with the file name youâre looking for.
Sample Solution
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You can utilize the gained VeThor to advance network exercises and further extend the extent of the VeChain biological system. The Foundation surveys all applications dependent on the definition models of every classification and step by step allots specialists’ mediators to candidates considered qualified by the Foundation after dispatch of the primary system. As the stage advances, the Foundation can distinguish members in different classifications. Network Foundation. These establishments gather assets from the nearby network and contribute and rejoin the network. They regularly deal with a few little families and corporate establishments and gather assets from the general. Since they for the most part have a lot of adaptability as far as financing, their endowments can frequently be utilized to improve offices in different manners. Activists of the network dissident network, notwithstanding acting naturally inhabitants, may at first assistance sort out the work and may think a lot about issues and related facilities.Although the meaning of socialism is exact and totally precise, it just shows the hypothesis of socialism, it doesn’t clarify how it works. It is difficult to make it work, so it doesn’t state that the hypothesis has never been settled. My folks lived there always, yet when I was conceived it vanished. In this way, a large portion of what I need to state depends on what my folks and grandparents informed me regarding the living of the Soviet Union. There are two essential kinds of network networks, networks characterized by geologically characterized networks and topographically various factors. Instances of geologically characterized networks are networks or neighborhoods. The accumulated houses share a typical space. Nearby economies and local organizations are additionally viewed as a major aspect of the neighboring network. Individuals from the network are invested individuals in network wellbeing, and I am keen on this The foundation of national security has been found in neighborhood networks. There are two sorts of networks. These are domains and affiliations. The previous alludes to a gathering of individuals living in explicit regions close to urban areas and towns and the last in reality is shared and advanced and supported normal interests despite the fact that they are scattered and away in a few urban areas and nations It alludes to a gathering of individuals to do. Instances of the last incorporate graduated class affiliations and professional gatherings. Since the start of progress, every single human gathering have consistently taken two structures. Network and Society The people group the world over need to make individual discussions out in the open spots without conversing with the entire society. It is a discussion, it makes network awareness, not different things. The likely vitality of messages in these discussions influences the entire society. Cypherpunks showed us this. The correspondence field I am generally inspired by is powerful correspondence. I imagine this is the most normally utilized field of correspondence in our general public. It is to persuade your educator to give your folks an extra ‘A’ point whether your folks are to cause you to accept that you have to go to Cancun to spend the spring excursion Regardless of whether. This specific correspondence field is the region that I am generally inspired by. I don’t have a clue what number of relational connections, life, influence, and wellbeing correspondence are utilized in our every day life. I found that each of these was especially fascinating to me. 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