nl_command
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Show the last 10 .conf files found by `find' in the /etc directory | find /etc -maxdepth 1 -name "*.conf" | tail |
Calculate the sum of all the numbers from 1 to 10 | seq 10 | jq -s 'add' |
Silently read exactly 1 character ignoring any delimiters into variable "SELECT" | read -s -N 1 SELECT |
find file end with '.txt' in current directory. | find . -name "*.txt" |
List all regular files from the current directory tree that were modified less than 60 minutes ago | find . -mmin -60 -type f -exec ls -l {} \; |
Print the ping time of a single request to "8.8.8.8" | ping -c 1 8.8.8.8 | awk 'FNR == 2 { print $ }' |
Search the current directory tree for files containing "bash" in their names | find . -name "*bash*" | xargs |
Find files in the current directory tree of size between 700k and 1000k | find . \( -size +700k -and -size -1000k \) |
display all the regular files in current folder excluding all the directories and all the sub directories having "normal" in their name | find . \( \ -o -path "*normal*" \) -prune -o \ -print |
Print the names of all files and directories in the current directory tree | find . -print |
Add '.avi' extension to all files/directories with '.mkv' extension under '/volume1/uploads' directory tree | find /volume1/uploads -name "*.mkv" -exec mv \{\} \{\}.avi \; |
find all the normal/regular files in the current directory | find -type f |
display the list of all the files in the current directory which have been accssed in the last 500 days exluding hidden files | find . -type f \ -mtime +500 -exec ls {} \; |
Search for the regex ... in the manual of the find command | man find | grep ... |
List the files from the current directory tree that contain lines matching regular expression '^From:.*unique sender', ignoring ~/src and ~/bin | find . -name bin -prune -o -name src -prune -o -type f -print | xargs egrep -il '^From:.*unique sender' |
Load keybindings from a file ~/.inputrc | bind -f ~/.inputrc |
List the directory paths of all file.ext files under present working directory | find `pwd` -name file.ext |xargs -l1 dirname |
Print the last 10 lines of "great-big-file.log" | tail great-big-file.log |
Make directorie 'es/LC_MESSAGES' as needed in the current directory | mkdir -p es/LC_MESSAGES |
Delete all empty directories under root | find root -type -d -empty -delete |
Print the calendar for February 1956 | cal 02 1956 |
search for a shell script in the current folder and display the current folder path but search from the sub directories | find . -name onlyme.sh -execdir pwd \; |
search for all regular/normal files in current folder and display all the files which contain 16 lines | find . -type f -print0 | xargs -0 grep -cH '' | awk -F: '$2==16' |
Search the /path directory tree for files that do not have a valid user or group | find /path -nouser -or -nogroup |
find files ending with .jpg | find . -name '*.jpg' -print ./bar/foo.jpg |
lists txt or html files older than 5 days, null separated | find . \( -name '*.txt' -o -name '*.html' \) -mtime +5 -print0 |
Find files/directories writable by group and others under the /path directory | find /path -perm -022 |
Remove all *.txt files in the home directory tree with confirmation | find $HOME/. -name *.txt -ok rm {} \; |
Remove all directories called "test" from the current directory tree | find -path "*/test/*" -delete |
find all the patch files in current folder and copy them to separate folder patches | find -name '*.patch' -print0 | xargs -0 -I {} cp {} patches/ |
Print output of command "stdbuf -o 0 ./a" to standard output and "output.txt" | stdbuf -o 0 ./a | tee output.txt |
Counts lines of myfile.txt file. | cat myfile.txt | wc -l |
copy all the regular files in the current directory to the temporary diectory. | find . -type f -exec cp {} /tmp + |
Print lines in the sorted contents of "file1" that are not in the sorted contents of "file2" | comm -23 <(sort file1) <(sort file2) |
Find file size in blocks | du -s <file> |
excute script makeallsizes with all '*.jpg' file under originals directory in 2 processes parallelly | find originals -name '*.jpg' | xargs -1 -P 2 makeallsizes |
Count the number of files/directories with '.php' extension under current directory tree and change the permissions to 755 | find . -name "*.php" -exec chmod 755 {} \; -exec /bin/echo {} \; | wc -l |
Change directory to the directory containing the "oracle" executable | cd $ |
display all instances of the file tkConfig.sh in the folder /usr | find /usr -name tkConfig.sh |
Save the logical current working directory to variable "basedir" | basedir=$ |
create backup of all the text files present in the current folder | find -name "*.txt" cp {} {}.bkup \; |
Search .c and .h files in the current directory tree for "expr" | find . -name '*.[ch]' | xargs grep -E 'expr' |
Print the compressed size, uncompressed size, compression ratio, and uncompressed filename of "file.zip" | gunzip -l file.zip |
Find all directories under $FOLDER, take the first fields (dot as the delimiter) from their timestamps and reverse sort them numerically | find "$FOLDER" -type d -printf "%T@\n" | cut -f 1 -d . | sort -nr |
Find all the regular files under '/your/dir' directory tree which are bigger than 5 MB and display them in decreasing order of their sizes | find /your/dir -type f -size +5M -exec du -h '{}' + | sort -hr |
Find all files with the SUID bit set beginning with the root directory | find / -perm -u+s |
Print the last 10 commands in history | history | tail |
find all the files which have not been modified in the last 1 year and display the total disk usage of them in GB | find . -type f -mtime +356 -printf '%s\n' | awk '{a+=$1;} END {printf "%.1f GB\n", a/2**30;}' |
Print a colon-separated list of all directories from the ~/code directory tree, except hidden ones and those below them | find ~/code -name '.*' -prune -o -type d -printf ':%p' |
Display 798 backwards | echo 798|rev |
Extract 8 bytes as an unsigned integer that is "$o" offset into "$pkg" | set `od -j $o -N 8 -t u1 $pkg` |
find all files in the current folder which have been modified in the last 24 hours and whose file name is of length 1 | find . -name \? -mtime -1 |
change the permission of all the rpm files in the entire file system to 755 | find / -name *.rpm -exec chmod 755 '{}' \; |
split file /usr/bin/gcc into pieces per 100000 lines | split -n 100000 /usr/bin/gcc |
Display standard input as a table with "${tab}" separators | column -s"${tab}" -t |
Update timestamps of all files in entire filesystem which are not newer than /tmp/timestamp | find / ! -newer /tmp/timestamp -exec touch {} \; |
Print which files differ in "dir1" and "dir2" recursively | diff -qr dir1/ dir2/ |
Search the /mnt/raid/upload directory tree for files that have not been modified within the last 5 days | find /mnt/raid/upload -mtime +5 -print |
Read a line from standard input into variable "dir" | read dir |
Find .java files in the current directory tree that contain 'TODO', and print their names | find . -name "*.java" -exec grep -Hin TODO {} + | basename `cut -d ":" -f 1` |
Find all files in current directory that were modified less than 1 day ago excluding hidden files and put the output to full_backup_dir variable | full_backup_dir=$(find . -depth \ -prune -o -mtime -1 -print) |
delete all the files in the current folder which are bigger than 1KB | find . -size +1024 ?print|xargs -i rm \; |
Set the setup connection timeout to 3 seconds for connecting to "user@ip" via ssh | ssh -o ConnectTimeout=3 user@ip |
Find files in the current directory tree whose pathnames contain "sub" | find ./ | grep "sub" |
Replace "foo" with "bar" in all files in the current directory tree except hidden ones | find . -type f -not -name “.*” -print | xargs sed -i ‘s/foo/bar/g’ |
Search for 'Processed Files' in all $srch* files under current directory run the sed script 'N;s/\n/\2 \1/' on the output | find . -iname "$srch*" -exec grep "Processed Files" {} \; -print| sed -r 'N;s/\n/\2 \1/' |
Print the average time of 4 ping requests to "www.stackoverflow.com" | ping -c 4 www.stackoverflow.com | sed '$!d;s|.*/\([0-9.]*\)/.*|\1|' |
Find all directories in /var/www/html/zip/data/*/*/*/*/* that are older than 90 days and print only unique paths | find /var/www/html/zip/data -type d -mtime +90 | uniq |
create a backup of all the files in the current folder excluding those that are present in the .snapshot sub directory and excluding the swap files | find . -name .snapshot -prune -o \ | cpio -pmd0 /dest-dir |
Search for all files named foo, FOO, or any other combination of uppercase and lowercase characters beneath the current directory. | find . -iname foo -type f |
Find files that don’t have 644 permissions | find / -type f ! -perm 644 |
Check all .txt files whose names may contain spaces whether they contain "needle" | find . -type f -iname "*.txt" -print0 | xargs -0 grep "needle" |
Move all files not matching "Tux.png" in "~/Linux/Old" to "~/Linux/New/" using zsh with "EXTENDED_GLOB" | mv ~/Linux/Old/^Tux.png ~/Linux/New/ |
display all the java, xml and action scripts (.as) files in a directory | find dir1 -type f -a \( -name "*.java" -o -name "*.as" -o -name "*.xml" \) |
Find all regular files under current directory tree that contain 'some text' in their names excluding paths that contain dot files/directories | find . -not -path '*/\.*' -type f -name '*some text*' |
Remove all files matching the pattern *[+{;"\\=?~<>&*|$ ]* under current directory | find . -name '*[+{;"\\=?~<>&*|$ ]*' -exec rm -f '{}' \; |
Find user daniel's files of type jpeg | find . -user daniel -type f -name *.jpg |
Save the user name of the current user to variable "x" | x=$(whoami) |
Search the current directory tree for regular files omitting directory `omit-directory' | find . -name omit-directory -prune -o -type f |
find all the files that have been modified in the last 24 hours | find . -type f -mtime -1 |
Rename all *$lower1* files under current directory without descending into .git directory by replacing the first occurrence of $lower1 with $lower2 in their paths | find . -name .git -prune -o type f -name "*$lower1*" -exec mmv "*$lower1*" "#1$lower2#2" {} + |
Search all regular files in the /var/log directory tree for string "19:26" | find /var/log/ -type f -exec grep -H ‘19:26′ {} \; |
Remove files erroneously named `-F' | find . -name "-F" -exec rm {} \; |
Recursively search current directory for all files with name ending with ".t1", change this to .t2 | find . -name "*.t1" -exec rename 's/\.t1$/.t2/' '{}' \; |
Recursively compress every file in the current directory tree and keep the original file | gzip -kr . |
Read first column of each row, find all other first columns which have a difference less than 10, and append that comma separated list to the row | awk 'FNR==NR { array[$1]++; next } { n = asorti(array,sort); for (i=1; i<=n; i++) if (sort[i] <= $1 + 10 && sort[i] >= $1 - 10 && $1 != sort[i]) line = (line ? line "," : line) sort[i]; print $0, line; line = "" }' file.txt{,} | column -t |
display all the files in the home folder excluding directories which have been modified in the last 24 hours | find /home/ -mtime -1 \! -type d |
Find all regular files starting from level 3 of directory tree ~/container and move them one level up | find ~/container -mindepth 3 -type f | while read file; do mv "$file" "$/.."; done |
Prints folder path where $mystring file is located. | echo dirname: $(dirname $mystring) |
Look for `regexp' in binary files | find . -type f -print|xargs file|grep -i text|cut -fl -d: | xargs grep regexp |
display all the java script files in the current folder | find . -name "*.js" |
find all the png files in the current folder which are present in the pattern list search .txt | find . -name '*.png' | grep -f search.txt |
Count the number of regular files with 755 permission under current directory tree | find . -type f -perm 755 | wc -l |
Search for 'Processed Files' in all $srch* (case insensitive) files under current directory | find . -iname "$srch*" -exec grep "Processed Files" {} \; -print |
Replace the leading spaces in the output of "history" with periods | history | sed 's/^ */&\n/; :a; s/ \(.*\n\)/.\1/; ta; s/\n//' |
find all the files in the entire file system that have been changed exactly 60 days and display ten files | find / -cmin -60 | head |
FInd all .txt files from current directory , Redirecting errors to /dev/null | find . -name "*.txt" 2>>/dev/null |
Delete files in /var/tmp/stuff and below that have not been modified in over 90 days | find /var/tmp/stuff -mtime +90 -print0 | xargs -0 /bin/rm |
Delete all files in the $DIR directory that have not been accessed in 5 or more days. | find "$DIR" -type f -atime +5 -exec rm {} \; |
Find all 664 permission files/drectories under current directory tree | find . -perm -664 |
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