nl_command
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387
bash_code
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532
Prepend the reverse history number as negative values to the output of the history command with arguments "$@"
history "$@" | tac | nl | tac | sed 's/^\( *\)\([0-9]\)/\1-\2/'
Compress all files in the "$FILE" directory tree that were last modified 30 days ago
find $FILE -type f -mtime 30 -exec gzip {} \;
List all *.ogg files under your home directory along with their size
find $HOME -name '*.ogg' -type f -exec du -h '{}' \;
Search for all zero-byte files and move them to the /tmp/zerobyte folder
find test -type f -size 0 -exec mv {} /tmp/zerobyte \;
Create a copy of index.html in all directories in current directory, pausing for confirmation before overwriting any existing files - names may not contain spaces - names may not contain spaces.
find . -mindepth 1 -maxdepth 1 -type d| xargs -n 1 cp -i index.html
Find all *.p[lm] files under /users/tom directory that matches both the regex '->get(' and '#hyphenate' in their contents
find /users/tom -name '*.p[lm]' -exec grep -l -- '->get(' {} + | xargs grep -l '#hyphenate'
Find Flash videos stored by browsers on a Mac
find /private/ 2>/dev/null | grep /Flash
search for the file "abc" in the current folder or display all the directories
find . -name abc -or -type d
Find all directories under current directory tree that were modified $FTIME days ago
find . -type d -mtime $FTIME
Create a symbolic link in target directory "$tmpdir" for each file under the current directory
find $PWD -type f -exec ln -st $tmpdir {} +
Display file type description of 'file-name' based on contents.
file file-name
Copy the current directory tree to "newdirpathname" preserving directory hierarchy
find ./ -depth -print | cpio -pvd newdirpathname
force delete all the files in the current folder expect xml files
find . | grep -v xml | xargs rm -rf {}
SSH into host "$1" using key file "/path/to/ssh/secret/key" and execute command "$2"
ssh -i /path/to/ssh/secret/key $1 $2
Find all regular files under '/usr/bin' directory tree that are less than 50 bytes in size
find /usr/bin -type f -size -50c
discard all the errors and search for the file "program.c" in the entire file system
find / -name 'program.c' 2>/dev/null
Search the ./in_save directory for regular files and view the result using pager `more'
find ./in_save/ -type f -maxdepth 1| more
Print the last space separated word from "Your string here"
echo "Your string here"| tr ' ' '\n' | tail -n1
Write "error" to both the log file "log" and standard error
echo "error" | tee -a log 1>&2
Count the number of equal lines in sorted files "ignore.txt" and "input.txt"
comm -12 ignore.txt input.txt | wc -l
Find all broken symlinks under current directory
find -type l -xtype l
remove all the regular/normal files in the temp folder and do not delete in the sub folders
find /tmp -maxdepth 1 -type f -delete
Rename all *.jpg files under current directory by appending parent directory name at the beginning of their names
find . -name '*.jpg' -exec bash -c 'd="${1%/*}"; mv "$1" "$d/$d-${1##*/}"' - '{}' \;
Prints total count of lines of all files in a current folder and subfolders.
find . -type f -exec wc -l {} \; | awk '{ SUM += $0} END { print SUM }'
split file t.txt into pieces per 30000000 lines named as "t.NN" with numeric suffix
split --lines=30000000 --numeric-suffixes --suffix-length=2 t.txt t
List the largest file prefixed by its size in bytes of all files under the current directory
find . -type f -name '*.gz' -printf '%s %p\n'|sort -nr|head -n 1
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
find all the directories with the name "c" in the current folder which are at least 3 levels deep and which are not present in the path "/p/".
find -mindepth 3 -type d ! -path '*/p/*' -name c -print
Recursively removes $TMPDIR folder, prompting user on each deletion.
rm -r $TMPDIR
Set 644 permission to all regular files under current directory
chmod 644 `find . -type f`
search for a word in all the files in the current directory and display the list of matched files.
find . -type f -exec grep -l 'needle' {} \;
find directory which case-insensitive name is foo in current directory.
find . -iname foo -type d
search for a word in all c files in the current folder
find . -name '*.c' | xargs grep 'stdlib.h'
Remount "/home/evgeny" with the "suid" flag set
sudo mount -i -o remount,suid /home/evgeny
Get files that last had their meta information changed more than 3 days ago
find / -ctime +3
Copy recursively "/source/backup" to "/destination" preserving symbolic links, modification times, and permissions
rsync -rtvpl /source/backup /destination
change the permission of all the normal/regular files from 777 to 755 in the folder "/home/user/demo"
find /home/user/demo -type f -perm 777 -print -exec chmod 755 {} \;
Show a listing of files not modified in over 20 days or not accessed in over 40 days
find /mydir \(-mtime +20 -o -atime +40\) -exec ls -l {} \;
Find writable regular files in the current directory
find . -maxdepth 1 -type f -writable
Truncate all non-empty regular files under the current directory
find . -type f -maxdepth 1 -not -empty -print0 | xargs -0i sh -c "cat /dev/null > \"{}\""
Make directories and parents as needed to "${raw_folder}" and "${split_folder}"
mkdir -p ${raw_folder} ${split_folder}
Count number of lines in all files matching "*R1*.fastq.gz"
zcat *R1*.fastq.gz | wc -l
Provide a list of all the files edited today to pr, and pipe pr's output to the printer
pr -n 'find . -type f -mtime -1 -print'|lpr
find all the files in the current folder which are readable
find . -readable
Recursively copy everything in /source/path whose name doesn't begin with a period, to /destination/path, without overwriting existing files, and outputting a line for each file copied or skipped.
cp -Rvn /source/path/* /destination/path/
search for a word in all the java files in the current directory
find . -name "*.java" | xargs grep "Stock" find . -name "*.java" | xargs grep "Stock" find . -name "*.java" | xargs grep "Stock" find . -name "*.java" | xargs grep "Stock" find . -name "*.java" | xargs grep "Stock" find . -name "*.java" | xargs grep "Stock
Read a single character from standard input with prompt "Are you sure? (y/n) "
read -p "Are you sure? (y/n) " -n 1
Change to parent directory and resolve any symlinks in the resulting path, making the physical path the current one.
cd -P ..
Split "input.txt" into files with 1 line each and use a prefix "output." and a suffix length of 5
split --lines=1 --suffix-length=5 input.txt output.
Update the timestamp of '/tmp/$$' to the current month and day
touch -t `date +%m%d0000` /tmp/$$
Traverse the filesystem just once, listing setuid files and directories into /root/suid.txt and large files into /root/big.txt.
find / \ , \ \
List all leaf directories under current directory
find . -type d -links 2
Set the timestamp of B to the same one as A
touch -r A B
List all files in /home/bozo/projects directory tree that were modified within the last day
find /home/bozo/projects -mtime -1
Make a copy of the entire contents of SRCFOLDER called "DESTFOLDER", if DESTFOLDER exists, the copy will be placed within it.
cp -R SRCFOLDER DESTFOLDER/
Find all files/directories under current directory tree excluding files/directories with name 'query_to_avoid'
find \! -name "query_to_avoid"
display a long listing of all the files in the current directory
find . -name * -exec ls -a {} \;
Download "Louis Theroux's LA Stories" using rsync over ssh
rsync -ave ssh '"Louis Theroux"''"'"'"'"''"s LA Stories"'
Copy all files below the current directory whose names contain "FooBar" to directory foo/bar/ in user's home directory.
find . | grep FooBar | xargs -I{} cp {} ~/foo/bar
SSH into "localhost" with forced pseudo-terminal allocation, execute "$heredoc", and save the output to variable "REL_DIR"
REL_DIR="$"
ERROR - this is for DOS
ping -n 1 %ip% | find "TTL"
Mount "nifs" filesystem "/dev/mapper/myldm" on "/mnt" as read only
mount -t ntfs -o ro /dev/mapper/myldm /mnt
change owner and group of the directory $dstdir" to the user and group of the file "$srcdir"
chown $ "$dstdir"
display the long listing detials of all the files in the folder junk which is in home folder.
find ~/junk -name "*" -exec ls -l {} \;
find all files in the current folder which have been modified after a specific time stamp and do not search in the subfolders;
find -maxdepth 1 -type f newermt "$timestamp"'
Exclude directory from find . command
find . -path ./misc -prune -o -name '*.txt' -print
Copies all files like "*foo*" under the current directory to the '/your/dest' directory.
find . -name "*foo*" | sed -e "s/'/\\\'/g" -e 's/"/\\"/g' -e 's/ /\\ /g' | xargs cp /your/dest
Find all the files in entire file system which are greater than 50MB and less than 100MB.
find / -size +50M -size -100M
find all the files in the current folder which which have been modified yesterday and day before yesterday and whose name is of length 1
find . -name \? -daystart -mtime +0 -mtime -3
Delete all lines matching "pattern to match" in "./infile" and make a backup with suffix ".bak"
sed -i.bak '/pattern to match/d' ./infile
Find files matching regular expression regexp
find . | xargs grep regexp
Save 'foo' into variable 'bar' in ksh
echo foo | read bar
Print numbers from 1 to 10 with 2 values per line
seq 10 | awk 'NR%2{printf("%s ", $0); next}1'
Read a line from standard input into variable "date" with prompt "BGC enter something", and storing typed backslash as backslash symbol
read -p 'BGG enter something:' -r data
Print the line number of each matching "<phrase>" in "<filename>"
nl -b a "<filename>" | grep "<phrase>" | awk '{ print $1 }'
find all files in the file system which have not been accessed in the last 2 days
find / -atime +2
Find a 400 permission file under /data directory
find /data -type f -perm 400 -print -quit
Search the current directory tree for files without "test" in their path names
find . -not -regex ".*test.*"
Save absolute path of "/home/nohsib/dvc/../bop" in variable "absolute_path"
absolute_path=$(readlink -m /home/nohsib/dvc/../bop)
Find all files/directories named 'pattern' under current directory tree
find . -name "pattern" -print
display the count of all the directories present in a folder
find /mount/point -type d | wc -l
Installs 'firefox' package.
yum install firefox
Write "Hello, world" to standard output and to "/tmp/outfile"
echo "Hello, world" | tee /tmp/outfile
Print the last 10 lines of "great-big-file.log"
tail great-big-file.log
find all symbolic links in the current folder
find -type l
Find all *.gz files/directories under asia and emea directory
find asia emea -name \*.gz -print0 | xargs -0
Prefix all files and folders in the current directory with "PRE_"
find * -maxdepth 0 ! -path . -exec mv {} PRE_{} \;
Delete all __temp__* files/directories under current directory tree
find . -depth -name '__temp__*' -exec rm -rf '{}' \;
Determine the user associated with stdin
who -m
Find the largest original ".gz" file in the current directory tree
find . -name '*.gz' | xargs gzip -l | tail -n +2 | head -n -1 | sort -k 2 | tail -n 1 | awk '{print $NF}'
Remove duplicate lines in "file_name" and print the output on stdout
awk '{print}' file_name | sort -t$'\t' -k2,2 | uniq -u --skip-fields 1 | sort -k1,1 -t$'\t' | cut -f2 -d$'\t'
List empty directories in the current directory tree
find . -depth -empty -type d
display a long listing of the files all non emoty files in current folder which have been modified 60 minutes ago
find . -mmin 60 -print0 | xargs -0r ls -l
Executes 'true'. then makes 'xargs' fail executing 'false' and return 123 exit code.
true | xargs false
Print a tab separated table in "table.txt" with cell borders
sed -e 's/\t/_|/g' table.txt | column -t -s '_' | awk '1;!{print "-----------------------------------------------------------------------";}'
Gets MAC address of 'eth0' network interface.
ifconfig eth0 | grep -o -E '([[:xdigit:]]{1,2}:){5}[[:xdigit:]]{1,2}'
Prints line count of each file within current directory.
find . -type f -print | xargs -L1 wc -l
Stores system load average number in the 'proc_load_average' variable.
proc_load_average=$(w | head -1 | cut -d" " -f13 | cut -d"," -f1-2 | tr ',' '.')
Remove leading and trailing spaces or tabs from "$string"
echo "$string" | sed -e 's/^[ \t]*//' | sed -e 's/[ \t]*$//'
find all js files which path neither ./dir1 nor ./dir2 nor ./dir3
find . -name '*.js' -not \