Find files quickly in linux
When using Linux, you often need to search for files. The main search commands are find and grep, and there are differences between the two commands.
Difference:
(1) The find command searches based on the attributes of the file, such as file name, file size, owner, group, whether it is empty, access time, modification time, etc. .
(2) grep searches based on the contents of the file, and searches each line of the file according to a given pattern (patter).
(3)which View the location of the executable file, only programs with environment variables set can be used
(4)whereis To find specific files, it can only be used to find binary files and sources Code files and man pages
(5) locate Use the database to view the file location, details: locate -h to view help information
1. Find command
Basic format: find path expression
1. Search according to the file name
(1)find / -name httpd.conf #Search for the file httpd.conf in the root directory, which means searching on the entire hard disk
around over /etc directory httpd.conf ute d.conf | file httpd.conf
## /etc -name '*srm*' multiple). Indicates searching for files in the /etc directory whose file names contain the string 'srm' (4)find . -name 'srm*' File 2. Search according to file characteristics (1)find / -amin -10 #Find the files accessed in the last 10 minutes in the system (access time) (2)find / -atime -2 #Find files accessed in the last 48 hours in the system (3)find / -empty #Find files or folders that are empty in the system (4)find / -group cat #Find files belonging to the group cat in the system / -mmin -5 / -mmin -5 time) (6)find / -mtime -1 #Find files that have been modified in the last 24 hours in the system (7)find / -user fred #Find files that have been modified in the system in the last 24 hours Files of the user fred (8)find/-size 10000c #Find files larger than 10000000 bytes (c: bytes, w: double words, k: KB, M: MB, G: GB ) (9)find / -size -1000k #Find files less than 1000KB 3. Use mixed search method to find files The parameters are: ! ,-and(-a),-or(-o). (1)find /tmp -size 10000c -and -mtime 2 #Find files in the /tmp directory that are larger than 10000 bytes and modified within the last 2 minutes (2)find / -user fred -or -user george #Find files in the / directory where the user is fred or george (3)find /tmp ! -user panda #Find all files in the /tmp directory that do not belong to panda User’s file 2. grep command Basic format: find expression 1. Main parameters[options]Main Parameters: -c: Only output the count of matching lines. -i: Case-insensitive -h: File names are not displayed when querying multiple files. -l: When querying multiple files, only the file names containing matching characters will be output. -n: Display matching lines and line numbers. -s: Do not display error messages that do not exist or have no matching text. -v: Display all lines that do not contain matching text. The main parameters of pattern regular expression: \: Ignore the original meaning of special characters in the regular expression. ^: Matches the starting line of the regular expression. $: Matches the end line of the regular expression. \<: Start from the line matching the regular expression. \>: To the end of the line matching the regular expression. [ ]: A single character, such as [A] means A meets the requirements. [-]: Range, such as [A-Z], that is, A, B, C to Z all meet the requirements. .: All single characters. *: There are characters, and the length can be 0. 2. Example grep -r "string" is very convenient (1) grep 'test' d* #Display all files starting with d that contain test Lines (2)grep 'test' aa bb cc #Display lines containing test in aa, bb, cc files (3)grep '[a-z]\{5\ }' aa #Display all lines containing strings with at least 5 consecutive lowercase characters in each line of string (4)grep magic /usr/src #Display files in the /usr/src directory (not Contains subdirectories) Lines containing magic(5)grep -r magic /usr/src #Display files in the /usr/src directory (including subdirectories) containing magic lines
(6)grep -w pattern files: only match The whole word, not part of the string (such as matching 'magic', not 'magical')
For more Linux-related technical articles, please visitLinux usage tutorial column for learning!
The above is the detailed content of Find files quickly in linux. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
How to install software on Linux using the terminal?
Aug 02, 2025 pm 12:58 PM
There are three main ways to install software on Linux: 1. Use a package manager, such as apt, dnf or pacman, and then execute the install command after updating the source, such as sudoaptininstallcurl; 2. For .deb or .rpm files, use dpkg or rpm commands to install, and repair dependencies when needed; 3. Use snap or flatpak to install applications across platforms, such as sudosnapinstall software name, which is suitable for users who are pursuing version updates. It is recommended to use the system's own package manager for better compatibility and performance.
The Ultimate Guide to High-Performance Gaming on Linux
Aug 03, 2025 am 05:51 AM
ChoosePop!_OS,Ubuntu,NobaraLinux,orArchLinuxforoptimalgamingperformancewithminimaloverhead.2.InstallofficialNVIDIAproprietarydriversforNVIDIAGPUs,ensureup-to-dateMesaandkernelversionsforAMDandIntelGPUs.3.EnabletheperformanceCPUgovernor,usealow-latenc
What are the main pros and cons of Linux vs. Windows?
Aug 03, 2025 am 02:56 AM
Linux is suitable for old hardware, has high security and is customizable, but has weak software compatibility; Windows software is rich and easy to use, but has high resource utilization. 1. In terms of performance, Linux is lightweight and efficient, suitable for old devices; Windows has high hardware requirements. 2. In terms of software, Windows has wider compatibility, especially professional tools and games; Linux needs to use tools to run some software. 3. In terms of security, Linux permission management is stricter and updates are convenient; although Windows is protected, it is still vulnerable to attacks. 4. In terms of difficulty of use, the Linux learning curve is steep; Windows operation is intuitive. Choose according to requirements: choose Linux with performance and security, and choose Windows with compatibility and ease of use.
Understanding RAID Configurations on a Linux Server
Aug 05, 2025 am 11:50 AM
RAIDimprovesstorageperformanceandreliabilityonLinuxserversthroughvariousconfigurations;RAID0offersspeedbutnoredundancy;RAID1providesmirroringforcriticaldatawith50�pacityloss;RAID5supportssingle-drivefailuretoleranceusingparityandrequiresatleastthre
Linux how to enable and disable services at boot
Aug 08, 2025 am 10:23 AM
To manage the startup of Linux services, use the systemctl command. 1. Check the service status: systemctlstatus can check whether the service is running, enabled or disabled. 2. Enable the service startup: sudosystemctlenable, such as sudosystemctlenablenginx. If it is started at the same time, use sudosystemctlenable--nownginx. 3. Disable the service startup: sudosystemctldisable, such as sudosystemctldisablecups. If it is stopped at the same time, use sudosystemctldisabl
Linux how to list all running processes
Aug 08, 2025 am 06:42 AM
Usepsauxforacompletesnapshotofallrunningprocesses,showingdetailedinformationlikeUSER,PID,CPU,andmemoryusage.2.Usetoporhtopforreal-timemonitoringofprocesseswithdynamicupdates,wherehtopoffersamoreintuitiveinterface.3.UsepgreporpidoftoquicklyfindthePIDs
How to clean up your Linux system
Aug 22, 2025 am 07:42 AM
Removeunusedpackagesanddependencieswithsudoaptautoremove,cleanpackagecacheusingsudoaptcleanorautoclean,andremoveoldkernelsviasudoaptautoremove--purge.2.Clearsystemlogswithsudojournalctl--vacuum-time=7d,deletearchivedlogsin/var/log,andempty/tmpand/var
Linux how to view the contents of a file
Aug 19, 2025 pm 06:44 PM
ToviewfilecontentsinLinux,usedifferentcommandsbasedonyourneeds:1.Forsmallfiles,usecattodisplaytheentirecontentatonce,withcat-ntoshowlinenumbers.2.Forlargefiles,uselesstoscrollpagebypageorlinebyline,searchwith/search_term,andquitwithq.3.Usemoreforbasi
