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find all the normal/regular files in the current directory which have been modified in the last 24 hours | find . -mtime -1 -type f -print |
search for a folder junk in the home directory and create files cart1, cart2, cart3 ... cart6 in the folder junk. Discard all the errors. | find ~/junk -exec touch ~/junk/cart{1,2,3,4,5,6} {} \; 2> /dev/null |
Display the 5 smallest files in the current directory and its sub-directories ignoring any empty files. | find . -not -empty -type f -exec ls -s {} \; | sort -n | head -5 |
Find all files/directories under current directory that were modified later than /reference/file | find . -newer /reference/file |
Display the number of regular files under current directory tree | find . -type f -exec echo {} \; | wc -l |
Prints only first ten characters of each string of file $file. | cat $file | cut -c 1-10 |
Removes all files but 5 newest ones from current folder. | ls -tp | grep -v '/$' | tail -n +6 | tr '\n' '\0' | xargs -0 rm -- |
find all the directories in the current folder which have been modified in 24 hours and move them to the folder /path/to/target-dir | find . -type d -mtime -0 -exec mv -t /path/to/target-dir {} + |
Extract path and query part from URL | echo "$url" | cut -d'/' -f4- |
Print output of script 'trap.sh' | ~ $ . trap.sh | cat |
Print sorted list of strings from 'ip_addresses' file, with number of occurrences of each string. | sort ip_addresses | uniq -c |
Search for first match of the regex 're' in all *.coffee files under current directory and print the file names | find . -name \*.coffee -exec awk '/re/ {print FILENAME ":" $0;exit}' {} \; |
list all javascipts file expect files under proc folder | find . -type d -name proc -prune -o -name '*.js' |
List all regular files from the current directory tree that were modified less than 60 minutes ago | find . -mmin -60 -type f -ls |
Extract any line in "file1" or "file2" which does not appear in the other | comm -3 <(sort file1) <(sort file2) |
Recursively search through directory "test" in home directory, displaying names of all directories without full paths, ie. only the name part following the last slash of each directory. | find ~/test -type d -exec basename {} \; |
Copy all files below the current directory whose names contain "foobar" to directory foo/bar/ in user's home directory. | find . -iname "*foobar*" -exec cp "{}" ~/foo/bar \; |
Measure the disk space taken up by all *.txt files in directory tree /home/d | find /home/d -type f -name "*.txt" -printf "%s\n" | awk '{s+=$0}END{print "total: "s" bytes"}' |
Print mount point of the file system containing $filename. | df "$filename" | awk 'NR==1 {next} {print $6; exit}' |
Format each line as 3 columns based on extraneous columns | awk '{for(i=3;i<=NF;i++){print $1,$2,$i}}' file | column -t |
Find all regular files that reside in the current directory tree and were last modified 1 day ago | find . -type f -mtime 0 |
Mount "ext4" filesystem "/dev/xvdf1" on "/vol" | sudo mount /dev/xvdf1 /vol -t ext4 |
List all non-empty files under under current directory | find . -type f ! -size 0 |
Unzip "file.gz" to stdout | zcat file.gz |
Copy all files/directories excluding *.flac files under current directory to /media/wd/network_sync/music directory | find . -type f -iname "*.flac" -o -print0 -iname "*.mp3" -print0 -o -iname "*.wav" -print0 -o -iname "*.aac" -print0 -o -iname "*.wma" -print0 | while read -d $'\0' file; do cp -ruv "$file" "/media/wd/network_sync/music/$file"; done |
Print 7 spaces in a row | yes ' ' | head -7 | tr -d '\n' |
Interpret backslash sequences and delete whitespace characters in variable $FOO and save the result to variable 'FOO_NO_WHITESPACE' | FOO_NO_WHITESPACE="$" |
On host "server_b", connect as ssh user "user" and copy "/my_folder/my_file.xml" to directory "/my_new_folder/", with all transfer data relayed through local host. | scp -3 user@server_b:/my_folder/my_file.xml user@server_b:/my_new_folder/ |
Make directories a, b, c, ..., z under path2 as needed. | mkdir -p path2/{a..z} |
Print the last line of the alphabetically sorted lines in file "set" | tail -1 < |
Output the string 'yes' continously until killed | yes |
display files in current folder ending with "pdf" or "PDF" | find . -name '*.pdf' -or -name '*.PDF' |
search for all regular/normal files in the current folder and display the number of lines in the file | find . -type f -print | xargs -L1 wc -l |
Remove files whose names start with `Foo' | find . -type f -name "Foo*" -exec rm {} \; |
Recursively removes all files in a current folder but '*txt' files. | find . -type f -not -name '*txt' | xargs rm |
Find all hidden files | find /tmp -type f -name ".*" |
change permission of all the files in the entire file system which have the permissions 777. | find / -type f -perm 0777 -print -exec chmod 644 {} \; |
Print all lines of "seq 1 10" except the last 3 | seq 1 10 | perl -e'@x=<>;print@x[0..$#x-3]' |
Copy "src" to "dest" if "src" is newer than "dest" | rsync -u src dest |
Search for '/usr/bin/perl' in all regular files under current dirctory tree and also show a long listing of them | find . -type f -exec grep "/usr/bin/perl" {} \; -ls |
Remove symbolic links and get absolute path of "${the_stuff_you_test}" and save to variable "DIR_PATH" | DIR_PATH=`readlink -f "${the_stuff_you_test}"` |
Remove all files from the current directory tree whose names do not end with ".tex" or ".bib" | find . | egrep -v "\.tex|\.bib" | xargs rm |
Print the names and sizes of regular files residing in the "tmp" directory tree | find tmp -type f -printf "%s %p\n" | awk '{sub(/^[^ ]+/,sprintf)}1' |
Get current hosts's IPv4 address. | host $ | grep "address" | grep -v "IPv6" | head -n 1 | awk '{print $4}' |
Create compressed archive of all the files in the current directory tree that have been modified in the last 7 days | find . -type f -mtime -7 -print -exec cat {} \; | tar cf - | gzip -9 |
Display permissions, user, group, and full path for each file in the current directory tree | tree -p -u -g -f |
Search the /usr/bin directory tree for regular files accessed more than 100 days ago | find /usr/bin -type f -atime +100 |
Print a single line of numbers from "001" to "100" | yes | head -n 100 | awk '{printf}' ##for 001...100 |
Find files/directories named 'filename' in the entire filesystem | find / -name filename -print |
find all the files in the folder /home which are exactly of size 10MB | find /home -size 10M |
find all the undo files in the current folder and display the toal lines, words, characters | find ./ -name *.undo | xargs wc |
Find all * * regular files under current directory | find . -type f -name "* *" |
Count total number of lines in all *txt files in current directory | wc -l `find . -type f -name '*.txt' ` |
Print a sorted list of the subdirectories of ~/Music | find ~/Music/ -maxdepth 2 -mindepth 2 -type d | sort |
Find all files/directories that start with 'onlyme' in their names under maximum 2 levels down the current directory | find . -maxdepth 2 -name 'onlyme*' |
Find all executable files under {} and reverse sort them | find {} -type f -depth 1 -perm +0111 | sort -r |
Search for "whatever" in all files under /dir directory ensuring white space safety in filenames | find /dir -type f -print0 | xargs -0i cat {} | grep whatever |
Find files in the current directory tree that match pattern "*sub*" | find ./ -name "*sub*" |
Generates name for temporary file with 6-letter suffix, and saves path to that new file in 'fn' variable. | fn=$(mktemp -u -t 'XXXXXX') |
Find all files in entire file system which are larger than 20000KB | find / -type f -size +20000k |
display all files in the current folder | find . |
Find files owned by nonexistent users | find / -nouser -print |
Disables shell option 'nocasematch'. | shopt -u nocasematch |
Find file size in bytes | du -b FILE |
Find all directories under and below /home/admin/public_html/, and change their permissions to 755 | find /home/admin/public_html/ -type d -exec chmod 755 {} \; |
Remove the regular files from the current directory tree that were last modified on November, 21 | find -type f -newermt "Nov 21" ! -newermt "Nov 22" -delete |
Split "<file_name>" into files of at most 1024 KiB in size | split -b 1024k <file_name> |
Save the absolute path of "$path" to variable "fullpath" | fullpath=`readlink -f "$path"` |
Prints strings with text "texthere" in all files recursively in a current folder. | grep -r "texthere" . |
Print right aligned numbers from 11 to 24 | yes '' | nl -ba | sed -n -e 11,24p -e 24q |
Print space separated numbers from 1 to 10 | seq 10 | xargs echo |
Print the current shell | ps | tail -n 4 | sed -E '2,$d;s/.* /\1/' |
Print a frequency count of column two for every file in the current directory | awk -F '\t' '{print $2}' * | sort | uniq -c | sort -nr |
Find all files/directories with space in their names under current directory | find . -name '* *' |
Add prefix "prefix_" to all ".jpg" files in the current directory | for filename in *.jpg; do mv "$filename" "prefix_$filename"; done; |
delete all text files in the entire file system | find / -type f -name "*.txt" -print | xargs rm |
Find all PNG and JPG files and append them to archive `images.tar' | find . \ -print -exec tar -rf images.tar {} \; |
Copy "/new/x/y/z/" over the network to "user@remote:/pre_existing/dir/" preserving the directory hierarchy | rsync -a --relative /new/x/y/z/ user@remote:/pre_existing/dir/ |
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 {} \; |
Archive "/home/path" to "path" on host "server" showing progress and statistics and remove files in the destination not found in the source | rsync -a --stats --progress --delete /home/path server:path |
Print unique list of who is logged in and the time of login formatted in columns | who -su | sort | uniq | column |
Counts lines in file $file and prints number only. | wc -l $file | awk '{print $1}'; |
Find all files/directories starting with 'app-' and ending with '.log' in their names and have been modified in the last 5 minutes | find /var/log/crashes -name app-\*\.log -mmin -5 |
display in a list of all the files that are bigger than 10KB in current folder | find . -size +10k -ls |
Find all image.pdf files/directories under ./polkadots with null character as the delimiter | find ./polkadots -name "image.pdf" -print0 |
List all regular files from the current directory tree that were modified less than 60 minutes ago | find . -type f -mmin -60 -print0 | xargs -r0 ls -l |
Search for "CONFIG_64BIT" in gzip compressed file "/proc/config.gz" | zcat /proc/config.gz | grep CONFIG_64BIT |
Find all *foo* files/directories under current directory and copy them to /your/dest | find . -name "*foo*" | sed -e "s/'/\\\'/g" -e 's/"/\\"/g' -e 's/ /\\ /g' | xargs cp /your/dest |
Show what content owned by root has been modified within the last day | find /etc/ -user root -mtime 1 |
Compress "hello world" and save to variable "hey" | hey=$(echo "hello world" | gzip -cf) |
Print appended data in "file" that match "my_pattern" | tail -f file | grep --line-buffered my_pattern |
search for the word "redeem reward" in all the regular/normal files in the current folder and discard all the errors | find . -type f -exec grep -i “redeem reward” {} \; -print 2>/dev/null |
Find all files called "file1.txt" that reside under and below /home/wsuNID/ | find /home/wsuNID/ -name file1.txt |
List all paths to files or directories under "/data/" that start with "command-" and end with "-setup", sort the result by the version number specified between "command-" and "-setup" | find /data/ -name 'command-*-setup' | sort -t - -V -k 2,2 |
Counts lines of /dir/file.txt file. | cat /dir/file.txt | wc -l |
Search all .pdf files from directory tree ~/.personal/tips for "hot" | find ~/.personal/tips -type f -iname "*.pdf" -exec pdftotext '{}' - ';' | grep hot |
Get the sizes of all files under dir1 directory | find dir1 ! -type d |xargs wc -c |
change the permission of all php files in current folder. Plus symbol at the end is used to give multiple files as input to the chmod command | find . -name "*.php" -exec chmod 755 {} + |
find all the links in the current folder and following it to the pointed path | find -L /target -type l |
find all the database files in the folder /var/named | find /var/named -type f -name *.db |
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