nl_command
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Remove blank lines and replace " " with "/" in "struct.txt" as input to make directories with parents as needed | sed '/^$/d;s/ /\//g' struct.txt | xargs mkdir -p |
Find all files/directories under current directory that match the case insensitive extended regex .*/(EA|FS)_.* | find -E . -iregex '.*/(EA|FS)_.*' |
Add read permission for 'other' for all files/directories named 'rc.conf' under current directory tree | find . -name "rc.conf" -exec chmod o+r '{}' \; |
get a PID of a process | jobs -x echo %1 |
List all IP addresses assigned to current hostname, pausing for user interaction after each page. | more /etc/hosts | grep `hostname` | awk '{print $1}' |
create a backup of all the files in the current folder to the floppy and save the file list in the file /tmp/BACKUP.LOG | find . -cpio /dev/fd0 -print | tee /tmp/BACKUP.LOG |
Change permissions to 644 for all subdirectories | find . -type d -print0|xargs -0 chmod 644 |
display all the files in the file system which belong to the user "wnj" or which are modified after the file "ttt" | find / \( -newer ttt -or -user wnj \) -print |
SSH into "myhost.com" as user "myname" with a check every 60 seconds that the server is still alive | ssh -o ServerAliveInterval=60 [email protected] |
Generates temporary file name with full path by template 'fifo.XXXXXX' and saves it to variable 'fifo_name' | fifo_name=$(mktemp -u -t fifo.XXXXXX) |
Identify files that do not have a listing in the /etc/passwd or /etc/group file | find / -nouser -o -nogroup |
search the entire file system for the file "jan92.rpt" | find / -name jan92.rpt -print |
Search the dir_data directory and all of its sub-directories for regular files and remove the execute permission for all while adding the write permission for the user. | find ~/dir_data -type f -exec chmod a-x,u+w {} \; |
Find and print the names of all files found in the current directory and all of its sub-directories. | find . -print |
Find all php files in current directory and delete text matching the regex '<?php /\*\*/ eval(base64_decode("aWY.*?>' in those files | find ./ -name "*.php" -type f | xargs sed -i 's#<?php /\*\*/ eval(base64_decode("aWY.*?>##g' 2>&1 |
Print appended data in "file" and search for "my_pattern" without buffering | tail -f file | stdbuf -o0 grep my_pattern |
Find all directories containing 'linux' in their names under '/root' directory tree | find /root -type d -iname "*linux*" |
find all text files in current folder and delete them | find . -name ".txt" -exec rm "{}" \; |
Silently read $char number of symbols from file descriptor 4, without backslash escaping, and store received input in 'line' variable | read -u 4 -N $char -r -s line |
find all the configuration or text files in current directory | find . -type f \ -print |
Move all directories in the current directory tree that have been modified in the last day to "/path/to/target-dir" | find . -depth -type d -mtime 0 -exec mv -t /path/to/target-dir {} + |
List all hidden regular files from the current directory separating them with zeroes | find . -maxdepth 1 -type f -name '.*' -printf '%f\0' |
Search for utility "foo" in PATH, display its file type description. | file $ |
Find all *.m4a files/directories under /home/family/Music directory | find /home/family/Music -name *.m4a -print0 |
display all the directories in the current folder which are atleast one level deep | find . -mindepth 1 -type d -print0 |
Remove all *.txt files in the home directory tree with confirmation | find $HOME/. -name *.txt -ok rm {} \; |
split file "$file into pieces named with 5 character suffix | split -a 5 $file |
Sort lines in "FILE" to standard output preserving only unique lines | sort -u FILE |
Shows strings that NOT match regex '^' | echo "${line}" | egrep --invert-match '^' |
Print content of all files ending with '*.foo' in current directory recursively | find . -name '*.foo' -exec cat {} \; |
Search the entire file system for .jpg files. | find / -name “*.jpg” |
Save the list of files modified within a fortnight ago to `deploy.txt' stripping the file names of any leading directories | find . -type f -mtime -14 -printf '%f\n' > deploy.txt |
Force create a symbolic link as a file named "/usr/lib/jvm/default-java" to "$default_java_dir" with verbose output | sudo ln -sTfv "$default_java_dir" "/usr/lib/jvm/default-java" |
Move all *.log files under $sourcePath that were modified more than 10 days ago to a zip archive $zipFile | find $sourcePath -type f -mtime +10 -name "*.log" | xargs zip -mT $zipFile -@ |
search for all pdf files in the folder "/home/pdf" which have been accessed in the last 60*24 hours | find /home/you -iname "*.pdf" -atime -60 -type -f |
Find all directories in directory tree `httpdocs' | find httpdocs -type d |
remove all the "core" files in the current folder which have not been changed in the last 4 days. | find . -name core -ctime +4 -exec /bin/rm -f {} \; |
find the count of all the charcters of the list of regular files present in the current folder | find . -type f | xargs | wc -c |
Print lines in the sorted contents of "second.txt" that are not in the sorted contents of "first.txt" | comm -13 <(sort first.txt) <(sort second.txt) |
Reports count of characters in the value of ${FOO} variable as follows: "length==<counted number of characters>" | echo -e "length==$" |
Find all directories under /path/to/base/dir and change their permission to 755 | find /path/to/base/dir -type d -exec chmod 755 {} + |
display long listing of all the symbolic links in the current folder | find . -type l -exec ls -l {} \; |
find all the text files in the home folder | find ~ -name "*.txt" — print |
Find all files in your home directory and below that are smaller than 100M. | find ~ -size -100M |
File 'mydatafile' has a number on each line, display the sum of these numbers rounded to lowest integer. | awk '{s+=$1} END {printf "%.0f", s}' mydatafile |
Gets IP addresses of all active network interfaces on host. | ifconfig | awk -F':' '/inet addr/&&!/127.0.0.1/{split($2,_," ");print _[1]}' |
Delete file with inode number 314167125 | find . -type f -inum 314167125 -delete |
Replace 'company' with 'newcompany' in all files under current directory and keep backups with .bakup extension | find -type f -print0 | xargs -0 sed -i .bakup 's/company/newcompany/g' |
Delete all files/directories with node number $inum under current directory tree | find . -inum $inum -exec rm {} \ |
Unzip and untar "file.tar.gz" | zcat file.tar.gz |tar x |
Find files in the current directory tree which are larger than 5 MB in size | find . -size +5000k -type f |
Get a list of all hidden files from the current directory tree | find . -type f -name '.*' -print0 | while IFS= read -r -d '' f; do basename "$f"; done |
Counts lines of /etc/fstab file. | cat /etc/fstab | wc -l |
run command './bin/elasticsearch -d --default.path.conf=/etc/elasticsearch' as user elasticsearch | sudo su elasticsearch -c './bin/elasticsearch -d --default.path.conf=/etc/elasticsearch' |
Find files in entire file system that are writable by group or other | find / -perm /g+w,o+w |
search for the folder .dummy in the entire directory structure of "test folder" and remove it. | find -depth "Test Folder" -type d -name .dummy -exec rm -rf \{\} \; |
Find all files/directories named 'articles.jpg' under current directory tree | find . -name "articles.jpg" |
Search the current directory tree for regular files whose names begin with "orapw" | find . -name "orapw*" -type f |
Find all top-level files in the current folder but ones with name like '*Music*' to the 'dest/' folder. | find . -maxdepth 1 -name '*Music*' -prune -o -print0 | xargs -0 -i cp {} dest/ |
Copies all files under the current folder like "file.ext" with "FooBar" in the path to the root of the current folder, preserving mode, ownership and timestamp attributes. | find . -name "file.ext"| grep "FooBar" | xargs -i cp -p "{}" . |
Archive "/path/to/sfolder/" to "[email protected]:/path/to/remote/dfolder" preserving hard links and compressing the data during transmission | rsync -aHvz /path/to/sfolder/ [email protected]:/path/to/remote/dfolder |
Recursively change the owner and group of "subdir2" to "user2" | chown user2:user2 -R subdir2 |
Prints sequentially listing of a current folder and calendar of a current month. | echo `ls` "`cal`" |
show all the files in the current folder which has the word "ITM" | find . -name ‘*ITM*’ |
display all the ".c" files in the current folder excluding those that are present in the .svn sub folder | find . -name .svn -prune -o -name "*.c" -print |
Print the list of files from the "/zu/durchsuchender/Ordner" directory tree whose names begin with "beispieldatei" and which contain string "Beispielinhalt" | find "/zu/durchsuchender/Ordner" -name "beispieldatei*" -print0 | xargs -0 grep -l "Beispielinhalt" |
Search the specified group for the given "filename | find / -group users -iname "filename" |
search for all the files having spaces in the current folder and save the output to the variable founddata | founddata=`find . -name "filename including space" -print0` |
Find all files with the SUID bit set | find / -perm -u+s |
display the filename and size of all the files in the file system which are bigger than 20MB | find / -type f -size +20000k -exec ls -lh {} \; | awk '{ print $8 ": " $5 }' |
Create intermediate directories as required and directory /my/other/path/here | mkdir -p /my/other/path/here |
Find '.git' directories in directory tree /path/to/files and print the pathnames of their parents | find /path/to/files -type d -name '.git' -exec dirname {} + |
Find all regular files residing in the current directory tree and search them for string "/bin/ksh" | find . -type f -print | xargs grep -i 'bin/ksh' |
Remount "/dev/block/mtdblock3" on "/system" with read and write permission | mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system |
Archive all filepattern-*2009* files/directories under data/ into 2009.tar | find data/ -name "filepattern-*2009*" | cpio -ov --format=ustar > 2009.tar |
Find all files ignoring hidden files under current directory and replace every occurrences of 'subdomainA.example.com' with 'subdomainB.example.com' in those files | find . -not -path '*/\.*' -type f -print0 | xargs -0 sed -i 's/subdomainA\.example\.com/subdomainB.example.com/g' |
dispaly a long listig of all the files in the current folder which are bigger than 100KB | find . -size +100000 -ls |
Get current directory name without full path, ie. the part after the last / | basename "$(pwd)" |
find all the files that are modified in the last 7 days | find -daystart -mtime -7 |
Print every file's type, name, and inode | find -printf "%y %i %prn" |
Find all files under /somefolder matching the extended regex '\./$' in their paths | find -E /somefolder -type f -regex '\./$' |
Gets domain name from dig reverse lookup and save in variable 'go'. | go=$(dig -x 8.8.8.8| awk '/PTR[[:space:]]/{print $NF}') |
Split "complete.out" into files with at most "$lines_per_file" lines each | split --lines $lines_per_file complete.out |
Print "new.txt" with line numbers prepended and lines 3 and 4 deleted | cat new.txt | nl |sed "3d;4d" |
Find all files under current directory and print only the filenames (not paths) | find . -type f -execdir echo '{}' ';' |
Find all regular files in the home directory tree that were modified in the last 24 hours | find ~ -type f -mtime 0 |
Print the contents of "my_script.py" | cat my_script.py |
find all the text files in current folder and change the extension of these files and move them to another folder | find ./ -name \*.txt | perl -p -e 's/^(.*\/\.txt)$/mv $1 .\/foo\/$2.bar.txt/' | bash |
search for the file foo in the current folder and display a long listing of it in sorted order of modification date | find . -name foo | xargs ls -tl |
find all the fles that have .ssh in the end and redirect the output to ssh-stuff | find / -name .ssh* -print | tee -a ssh-stuff |
find all the normal/regular files in the current folder which are present in the pattern file "file_list.txt" | find . type f -print | fgrep -f file_list.txt |
Locate logo.gif in the /var/www directory tree | find /var/www -name logo.gif |
Show file type information for files in /usr/bin | find /usr/bin | xargs file |
display the version of find command | find -version |
List the current directory recursively ignoring ./src/emacs/ and all its contents | find . -path ./src/emacs -prune -o -print |
Remove files that are greater than 1MB in size under current directory | find . -type f -size +1M -exec rm {} + |
find regular files and directories that have been modified in the last seven days | find . -mtime -7 -type f |
download contents from "https://www.npmjs.com/install.sh" and execute | curl https://www.npmjs.com/install.sh | sh |
Delete all files with '.old' extension under current directory tree | find . -name “*.old” -exec rm {} \; |
create directory dir | mkdir -p dir |
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