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Find a used disk space of a target directory and files inside of it | du -h your_directory |
Find all regular files whose names do not end in "*.html" | find . -type f -not -name "*.html" |
long list al the files in the current directory which have read permission to the group | find . -perm -g=r -type f -exec ls -l {} \; |
Remove all *.swp files under current directory | find . -name "*.swp"|xargs rm |
List all defined bash functions | set | egrep '^[^[:space:]]+ [][[:space:]]*$' | sed -r -e 's/ [][[:space:]]*$//' |
Change owner of "folder" to "user_name" | chown user_name folder |
Print first 11 characters from $line, print a tab, print the md5 sum of the file specified by the 13th and onward characters from $line and print a null character at end without a trailing new line | echo -en "${line:0:11}" "\t" $(md5sum "${line:12}") "\0" |
search for the file, filename.txt in the folder /home | find /home -name filename.txt |
Find files modified between 6 and 9 minutes ago | find . -mmin +5 -mmin -10 |
replaces the last occurrence of 'a' with 'c' in file | tac file | awk '/a/ && !seen {sub; seen=1} 1' | tac |
Search all regular files in the current directory tree for "example" | find -type f -print0 | xargs -r0 grep -F 'example' |
Start program 'scriptname' with an empty environment. | env - scriptname |
Get A record for domain $domain | dig -t A $domain |
Force create a symbolic link named "$pdir" to "$pluginpath" with verbose output | sudo ln --symbolic --verbose --force "$pluginpath" "$pdir" |
Removes all empty folders under path '/foo/bar' and the path itself. | find /foo/bar -type d -depth -exec rmdir -p {} + |
find Texinfo source files in /usr/local/doc | find /usr/local/doc -name '*.texi' |
Split "file.tar.gz" into files of size 1024 MB | split -b 1024m file.tar.gz |
Decompresses file. | bzip2 -d /tmp/itunes20140618.tbz |
Search the current directory recursively for files last modified within the past 24 hours | find . -mtime 0 |
find all the files in the folder "/usr/app/etl/01/OTH/log/tra" which have been modified in the last 240 hours excluding hidden files and those with the name "/usr/app/etl/01/CLE/par/files_to_skip.par" | find /usr/app/etl/01/OTH/log/tra -type f ! -name ".*" -mtime -10 | egrep -vf /usr/app/etl/01/CLE/par/files_to_skip.par |
Find all files/directories under current directory that match the case insensitive glob pattern {EA,FS}_* | find . -iname "{EA,FS}_*" |
Decompress and unarchive "hello-0.2.tar.gz" | gzip -dc hello-0.2.tar.gz | tar -xf - |
Find files that are orphaned | find -nouser |
Save the absolute path of "$path" to variable "full_path" | full_path=`readlink -fn -- $path` |
Compress all files in the "$FILE" directory tree that were last modified 30 days ago and have not already been compressed with gzip | find $FILE -type f -not -name '*.gz' -mtime 30 -exec gzip {} \; |
Move "file1", "file2", "..." to "target" directory | mv -t target file1 file2 ... |
display all the files in the file system which do not belong to the user "wnj" and which are modified before the file "ttt" | find / \! \( -newer ttt -user wnj \) -print |
List all files under current directory that are greater than 10MB in size | find . -size +10M -exec ls -ld {} \; |
search for word linux in all the regular/normal files in the folder mail. | find ~/mail -type f | xargs grep "Linux" |
Search the files of the current directory tree for string "searched-string" | find . | xargs grep "searched-string" |
Find all files/directories under current directory that match the case insensitive extended regex .*/_.* | find -E . -iregex '.*/_.*' |
Mount a read only ntfs filesystem | mount -t ntfs |
Find all the Sticky Bit set files in entire file system whose permission are 551 | find / -perm 0551 |
Print the list of files and directories of the /etc directory | find /etc/. ! -name . -prune |
Executes 'sleep 10' in a subshell created by a pipeline of built-in function 'true'. | true | sleep 10 |
Print environment variable "IFS" and its value | set | grep ^IFS= |
Find all files with the extension jpg regardless of case | find . -type f -iname '*.jpg' -print0 |
Use awk command 'FNR==NR { array[$1,$2]=$8; next } in array { print $0 ";" array[$1,$2] }' on compressed files "input1.vcf.gz" and "input2.vcf.gz" | gzip -dc input1.vcf.gz input2.vcf.gz | awk 'FNR==NR { array[$1,$2]=$8; next } in array { print $0 ";" array[$1,$2] }' |
Print all files/directories under ... directory by terminating their paths with a null character | find ... -print0 |
Print login information of all users except the first two and replace all instances of " " with ", " | who | awk '{ if (NR!=1 && NR!=2) {print} }' | sed -e 's/ /, /g' |
Add "new." to the beginning of the name of "original.filename", renaming it to "new.original.filename". | rename 's/^/new./' original.filename |
display all the files in the folder /home which have the setuid bit enabled | find /home -perm /u=s |
Find files with group write permission and remove the permission | find . -perm -20 -exec chmod g-w {} ; |
find all the files in the current directory that have the extension "bar" and donot search in the subdirecotries directories. | find . -name *.bar -maxdepth 2 -print |
Append the parent directory name with a space in all 'text.txt' files in all sub directories of current directory | find . -name text.txt | sed 's|.*/\(.*\)/.*|sed -i "s@^@\1 @" & |' | sh |
Find all files/directories under /home/foo/public_html/ that were modified less than 60 minutes ago | grep ! error_log | find /home/foo/public_html/ -mmin -60 |
Execute /usr/bin/find with $* arguments | /usr/bin/find $* |
Search the home directory for files accessed more than 10 days ago | find ~/ -atime +10 |
Print content of 'a' file, showing all non-printing characters including TAB characters, and displaying $ at the end of each line. | cat -vet a |
List all *.java files/directories under /home/bluher with their full paths | find /home/bluher -name \*.java |
Find all files under current directory and set their permission to 775 | find -type f | xargs chmod 775 |
Print a 2 byte decimal integer from "/dev/random" | od -An -N2 -i /dev/random |
Removes 55, adds a 10-digit line number, and rearranges the date for each line in "input" on OSX | nl -nrz -w10 -s\; input | sed -E 's/55//; s/([0-9]{2})-([0-9]{2})-([0-9]{4})/\3\2\1/' |
list files that the user does not have permissions to read, do not try to descend into directories that cannot be read. | find . ! -readable -prune |
Find all .txt files in the /home/user directory tree and copy them to /home/backup | find /home/user -name '*.txt' | xargs cp -av --target-directory=/home/backup/ --parents |
search for the word "search-pattern" in all the regular/normal files in the current folder and display the matched file name | find . -type f | xargs grep -l "search-pattern" |
Prints full path to files with dot in name in a current folder. | ls -d -1 $PWD/*.* |
Move all files and directories in the current directory to "/foo" | mv * /foo |
Print all lines of "seq 10" except the last 3 | seq 10 | tac | sed '1,3d' | tac |
Counts lines of all *.txt files in a current folder. | cat *.txt | wc -l |
Force delete all files in the temp folder which have not been accesses in the last 240 hours | find /tmp/* -atime +10 -exec rm -f {} \; |
Print the contents of "somefile" as input to "splitter 16224-16482" | cat somefile | splitter 16224-16482 |
Find all files/directories under 'my key phrase' directory | find 'my key phrase' |
Print "on" to standard output and to files matching "/sys/bus/usb/devices/usb*/power/level" | echo "on" | tee /sys/bus/usb/devices/usb*/power/level |
Print summary of new/missing files, and which files differ between dir_one and dir_two, sorted alphabetically. | diff -qr dir_one dir_two | sort |
Removes 55, adds a 10-digit line number, and rearranges the date for each line in "input" on OSX | nl -nrz -w10 -s\; input | sed -E 's/55//; s/--/\3\2\1/' |
Recursively remove all "*.txt" files and answer "n" to any prompt | yes n | rm -r *.txt |
change the owner of all the files in the current directory | find . -exec chown myuser:a-common-group-name {} + |
Remove all regular files from the current directory tree whose names do not end with "ignore1" or "ignore2" | find . -type f -not -name '*ignore1' -o -not -name '*ignore2' | xargs rm |
Search for 'birthday' in all regular files under ~/Documents directory tree and show only the filenames | find ~/Documents -type f -print0 | xargs -0 grep -il birthday |
Delete all files/directories under current directory | find -delete |
Search current directory for any directory named "config" and go to first match found. | cd "$" |
Find all files/directories with 755 permission under current directory tree | find ./ -perm 755 |
Decompresses file 'xac.bz2', redirecting output to standard out. | bzip2 -dc xac.bz2 |
change the ownership of all the files in the file system from edwarda to earnestc | find / -user edwarda -print | xargs chown earnestc |
Find all directories under /var/www directory and set their permission to 755 | sudo find /var/www -type d -print0 | xargs -0 chmod 755 |
List all cron jobs which contain "word". | crontab -l | grep 'word' |
Split "randn20M.csv" into files of at most 5000000 lines each with prefix "_tmp" | split -l5000000 randn20M.csv '_tmp'; |
Redirects output of 'time' built-in function and prints only real-time statistic. | { time ls -l >/dev/null; } |& grep real |
Prints listing of a root folder including hidden files, and saves output to 'output.file'. | ls -a | tee output.file |
get all files in a current directory modified in the last 7 days | find . -mtime -7 -print0 | xargs -0 tar -rf /foo/archive.tar |
Search for all files newer than file /tmp/t1 but not newer than file /tmp/t2 | find / -newer /tmp/t1 -and -not -newer /tmp/t2 |
Copy entire directory structure from dir1 as a subdirectory of dir2, omitting empty directories, special files and any directory named "exclude". | mkdir dir2; find dir1 \ -not -wholename '*/exclude/*' -exec cp -P --parents '{}' dir2/ \; |
List all aliencoders.[0-9]+ files/directories under /home/jassi/ directory | find /home/jassi/ -name "aliencoders.[0-9]+" -exec ls -lrt {} + | awk '{print $9}' |
find all the files in the current folder which have set guid bit on and list the top 10 files. | find . -perm /g+s | head |
find all files in the current folder which have not been accessed in the last 7 days or which are bigger than 20KB | find . -atime +7 -o -size +`expr 10 \* 1024 \* 2` -print |
Replace all negative numbers in the 3rd comma-separated column of inputfile by the number notated in parenthesis instead of with a minus sign. | awk -F, 'BEGIN {OFS = ","} {gsub("-", "(" substr ")", $3); print}' inputfile |
Find all HTML files starting with letter 'a' in the current directory and below ignoring the case | find . -iname a\*.html |
searching for all files with the extension mp3 | find / -name *.mp3 |
change the extension of all the files in the current folder to html excluding those html files and those which are present in another disk partition | find . -xtype f \! -iname *.html -exec mv -iv "{}" "{}.html" \; |
delete all the core files in the folder /prog which are bigger than 1KB | find /prog -type f -size +1000 -print -name core -exec rm {} \; |
Save absolute path of "$path" whose parents exist to variable "abspath" | abspath=$ |
Print lines 15967 to 16224 in file "dump.txt" | cat dump.txt | head -16224 | tail -258 |
Find all directories under /fss/fin | find /fss/fin -type d |
Change the user to daisy for directories and subdirectories owned by harry | find . -type d -user harry -exec chown daisy {} \; |
Find all files/directories named 'query' under current directory tree | find -name "query" |
Search all the .c and .h files in the current directory tree for "expr" | find -name '*.[ch]' | xargs grep -E 'expr' |
Print directories in the the current directory as a list with no report information | tree -d -L 1 -i --noreport |
Calculate the md5 sum of the contents of all files sorted in directory tree "/path" | find /path -type f | sort -u | xargs cat | md5sum |
List all ~/bin/FilesDvorak/.* (non-recursive) and ~/.PAST_RC_files/.* (recursive) files/directories and take common entries between these two lists | comm -12 <(find ~/bin/FilesDvorak/.* -maxdepth 0) <(find ~/.PAST_RC_files/.*) |
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