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find files (under root file system /) that were accessed within the last 24 hours | find / -atime -1 |
find all the files that have been modified in the last 7 days, | find . -mtime -7 -print |
search for all the files with the name "dummy" in the current folder and discard all the errors. | find / -type f -name dummy 2>/dev/null |
Find all SUID set files | find / -perm /u=s |
search for files which are writable by both their owner and their group | find . -perm -g+w,u+w |
Print a single line of numbers from "001" to "100" | yes | head -n 100 | awk '{printf( "%03d ", NR )}' ##for 001...100 |
Search the home directory for filenames starting with "xx" except for "xxx" files | find ~ -name 'xx*' -and -not -name 'xxx' |
Print each character in "orange" on a new line | echo orange | fold -w 1 |
run ksh shell as user apache | su apache -s /bin/ksh |
Search the current directory tree for all .java files that were last modified at least 7 days ago | find . -name '*.java' -mtime +7 -print |
search for a string in gzip'd files | find . -type f -name "*.gz" -exec zgrep 'GET /foo' {} \; |
Count the number of differing lines in "file1" and "file2" | diff file1 file2 | grep ^[\>\<] | wc -l |
Read a line from standard input | read |
Print 'file' content, formatting output as 29-symbol wide column | cat file | fold -w29 |
List all IPV4 addresses found in all files under /etc directory | find /etc -type f -exec cat '{}' \; | tr -c '.[:digit:]' '\n' | grep '^[^.][^.]*\.[^.][^.]*\.[^.][^.]*\.[^.][^.]*$' |
Extract number from $filename of the form "something_12345_else" and set the variable "number" to this number. | number=$(echo $filename | awk -F _ '{ print $2 }') |
Copy the current directory tree to "newdirpathname" preserving directory hierarchy | find ./ -depth -print | cpio -pvd newdirpathname |
search for all the regular/normal files ending with sdw or sdc or sdd in the current folder and save the output to list_1 file | find . -type f | egrep '$' > list_1 |
display all the html files in the folder /var/www | find /var/www -type f -name "*.html" |
Merge lines whose first comma-separated field in file 'in1' also appears as a first comma-separated in file 'in2' - both files must be sorted. | join -t, in1 in2 |
Search for 'keyword' in all javascript files under current directory tree excluding all paths that includes the directory 'node_modules' | find ./ -not -path "*/node_modules/*" -name "*.js" | xargs grep keyword |
Calculate the md5sum of all the files with name "MyCProgram.c", ignoring case | find -iname "MyCProgram.c" -exec md5sum {} \; |
Checks your Homebrew system for potential problems. | brew doctor |
Search for all files with the same inode number 41525360 | find . -follow -inum 41525360 |
Recursively finds all '*.png' files older than 50 days in a current folder and removes them. | find . -name "*.png" -mtime +50 -exec rm {} \; |
Find all files under current directory and show their file information | find . -type f -print0 | xargs -0 file |
Print the last 10 lines of the file '/var/log/syslog' | tail /var/log/syslog |
Collect process information and display only lines containing pattern specified by variable "app_name". | top -l 1 | grep $app_name |
Find all files under /path and below writable by `group' or `other' | find /path -perm /g+w,o+w |
Save the first word of the first difference in ".dir_list_2" compared to ".dir_list_1" into variable "extract_dir" | extract_dir=$(diff .dir_list_1 .dir_list_2 | grep '>' | head -1 | cut -d' ' -f2) |
Remount "/dev/sda7" partition as executable | sudo mount -o remount -o exec /dev/sda7 |
Find all files/directories with '.o' extension under '/lib/modules' directory tree | find /lib/modules -name '*.o' |
Print "RDBMS exit code : $RC " to the console and append to "${LOG_FILE}" | echo " RDBMS exit code : $RC " | tee -a ${LOG_FILE} |
Find all files in directory tree "dirname" | find dirname -exec echo found {} \; |
find all the files in the folder Musica and display them in a single line null separated | find Música/* | egrep -Z \/\\. | xargs -0 echo |
List all symlinks under current directory and search for targetfile.txt in this list | find . -type l | xargs -I % ls -l % | grep targetfile.txt |
display all the tex files in the current folder | find . -name \*.tex |
Find all files/directories named '.todo' under $STORAGEFOLDER directory tree and print their parent paths | find "$STORAGEFOLDER" -name .todo -printf '%h\n' |
Find all files named 'foo' under your home directory and list them with confirmation prompt | find ~ -type f -name 'foo*' -ok ls -l '{}' ';' |
Send at most 3 ping requests to "8.8.8.8" with a timeout of 3 seconds on interface "eth9" | ping 8.8.8.8 -I eth9 -c 3 -w 3 |
Print second field from semicolon-seprated line $string. | echo $string | cut -d';' -f2 |
display all the normal/regular files in the current folder and do not go beyond 3 levels | find . -maxdepth 3 -type f |
Find all directories that have been modified in the last seven days. | find . -mtime -7 -type d |
Make a directory in the current working directory with a random 32 alphanumeric character name | cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1 | xargs mkdir |
Set 644 permission to all regular files under current directory | find . -type f -print0 | xargs -0 chmod 644 |
get all files in a current directory modified in the last 7 days | find . -mtime -7 -print0 | xargs -0 tar -cjf /foo/archive.tar.bz2 |
print all files in the file system excluding those ending with ".c" | find / \! -name "*.c" -print |
prints full path of given file | echo $(cd $ && pwd -P)/$ |
Find *.java files in the current directory and replace foo with bar in those files | find . -name "*.java" -exec sed -i '' s/foo/bar/g \; |
display long listing of all the text files in the current folder | find . -name "*.txt" -exec ls -la {} \; |
Remove all files with a txt extension under current directory | find . -type f -name "*.txt" -print|xargs rm |
Print the files in the current directory as a list of comma separated values | ls -1 | tr '\n' ',' |
Print file information of command "studio" | which studio | xargs ls -l |
Replace all spaces with underscores in directory paths under current directory. | find -name "* *" -type d | rename 's/ /_/g' |
find .bmp or .txt files | find /home/user/Desktop -name '*.bmp' -o -name '*.txt' |
search for swap files (.swp files) in temp folder and remove them | find /tmp -name '*.swp' -exec rm {} \; |
Print second field from semicolon-seprated line $string. | echo $string | cut -d';' -f2 |
Find all directories named 'octave' under current directory tree | find . -name "octave" -type d |
Remove files in current directory according to the filenames found in ~/clang+llvm-3.3/bin/ | find ~/clang+llvm-3.3/bin/ -type f -exec basename {} \; | xargs rm |
Unsets all locale variables. | unset $ |
Copy the directory hierarchy of the current directory to "destdir" | find . -type d | cpio -pdvm destdir |
Set the 'xtrace' shell variable | set -x |
Search the .java files from the /Applications/ directory tree for TODO lines | find /Applications/ -name "*.java" -exec grep -i TODO {} \; |
Find all files whose names begin with 'Makefile' in the /usr/ports directory tree and count how many of them contain 'QMAKESPEC' | find /usr/ports/ -name Makefile\* -exec grep -l QMAKESPEC '{}' '+' | wc -l |
display all the files in the current folder | find . -print |
Find all files/directories named orm.properties in entire file system | sudo find / -name "orm.properties" |
Read a line from standard input into variable "message" with escaped prompt "\nPlease Enter\na Message: '" | read -p "`echo -e '\nPlease Enter\na Message: '`" message |
Replace "foo" with "bar" in all files in the current directory tree | find . | xargs sed -i ‘s/foo/bar/g’ |
create symbolic links in directory "folder2" to all files located in current directory that filename not started with "." | |
Print the current directory name without full path | echo "$PWD" | sed 's!.*/!!' |
Remove sess_* files that were modified more than 2 days ago | find sess_* -mtime +2 -exec rm {} \; |
create a md5sum for all the instances of the file MyCProgram.c in current folder | find -iname "MyCProgram.c" -exec md5sum {} \; |
Archive "fileToCopy" to "/some/nonExisting/dirToCopyTO" on host "ssh.myhost.net" via ssh | rsync -ave ssh fileToCopy ssh.myhost.net:/some/nonExisting/dirToCopyTO |
Search the /tmp/ directory recursively for regular files | find /tmp -type f |
Shows state of shell option 'extglob'. | shopt extglob |
Print the size for every *.ogg file found under the home directory | find $HOME -name '*.ogg' -type f -exec du -h '{}' \; |
Recursively change the owner and group of "/home/el/svnworkspace" and "775" to "your_user_name" | chown -R your_user_name.your_user_name 775 /home/el/svnworkspace |
Delete all *.zip files under current directory that are older than 2 days | find . -name "*.zip" -mtime +2 -print0 | xargs -0 -I {} rm {} |
Execute the file utility for each file found under /etc and below | find /etc -print0 | xargs -0 file |
find all the directories in current folder and do not search in sub directories | find . -maxdepth 1 -type d -print0 |
Find all *.java files under current directory containing the string 'String' | find . -name "*.java" -exec grep "String" {} \+ |
Check if command "c++" and command "g++" are equal | [ `md5sum $ | cut -d' ' -f1` == `md5sum $ | cut -d' ' -f1` ] && echo Yes, equal content || echo No, unequal content |
Finds strings with dot-separated sequence of numbers, and prints part of that sequence before the first dot. | echo "$f" | grep -Eo '[0-9]+[.]+[0-9]+[.]?[0-9]?' | cut -d. -f1 |
Find all regular files under and below /home/admin/public_html/, and change their permissions to 644 | find . /home/admin/public_html/ -type f -exec chmod 644 {} \; |
display the content of the files in the file system with the name "lilo.conf" and save the output to the file lilo.txt | find / -type f -name lilo.conf 2>/dev/null -exec cat {} \; >lilo.txt |
Print "new.txt" with line numbers prepended | cat new.txt | nl |
Search the system for files named "findcommandexamples.txt", ignoring the case | find / -iname findcommandexamples.txt |
Print 'file' content, formatting output as 29-symbol wide column, regarding space symbol as a word separator | cat file | fold -s -w29 |
Search for 'It took' in all $srch1* (case insensitive) files under current directory | find . -iname "$srch1*" -exec grep "It took" {} \; -print |
search for a word in all the files with the extension "ch" in the current folder | find -name '*.[ch]' | xargs grep -E 'expr' |
Create a symbolic link named the basename of "$file" to "$file" | ln -s $file `basename $file` |
display the change owner command for all the regular files in the current folder. | find . -type f -exec echo chown username {} \; |
find all the regular/normal files in the /path folder and delete them | find /path -type f -delete |
Find all files that have been modified in the last seven days. | find . -mtime -7 -type f |
find the file with the name "esxcfg-firewall" in the current folder | find -print | grep esxcfg-firewall |
long list al the files in the current directory which have all the permissions | find . -perm 777 -type f -exec ls -l {} \; |
Search all the regular files from the current directory tree for "search string" | find . -type f -print -exec grep --color=auto --no-messages -nH "search string" "{}" \; |
find all the files in the current folder and display adding quotations to each file and replace spaces with new line | find $PWD | sed -e 's/^/"/g' -e 's/$/"/g' | tr '\n' ' ' |
Search for 'mystring' in all *.txt files under current directory | find . -iname *.txt -exec egrep mystring \{\} \; |
Combine every two lines of standard input | paste -d "" - - |
Subsets and Splits