Commands using wc sorted by votes

Commands using wc (172)

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Report summary of string occurrence by time period (hour) - alternate

useful to count events in logs @see: http://www.commandlinefu.com/commands/view/10327/report-summary-of-string-occurrence-by-time-period-hour#comment Show Sample Output
This is sample output - yours may be different.
```
2012-02-24 08 28
2012-02-24 09 122
2012-02-24 10 110
2012-02-24 11 95
```
0

cat z.log | cut -d ':' -f1 | sort | uniq | xargs -l1 -iFF echo 'echo FF $(cat z.log | grep -e "^FF" | grep -e Timeout | wc -l )' | bash

hute37 · 2012-02-28 17:25:14 3
Get Total Line Count Of All Files In Subdirectory (Recursive)
This is sample output - yours may be different.
0

find . -type f -name "*.*" -exec cat {} > totalLines 2> /dev/null \; && wc -l totalLines && rm totalLines

philwc · 2012-03-22 13:11:53 3
Count total number of subdirectories in current directory starting with specific name.

To get all directories, replace pattern*/ by just */ Show Sample Output
This is sample output - yours may be different.
```
28
```
0

ls -d1 pattern*/ | wc -l

jozilla · 2012-04-20 08:58:07 5
Count git commits since specific commit
This is sample output - yours may be different.
0

git log --summary 223286b.. | grep 'Author:' | wc -l

wr8cr8 · 2012-07-10 13:20:02 3
Output centralized text on command line

Echoes text horizontally centralized based on screen width
This is sample output - yours may be different.
0

centralized(){ L=`echo -n $*|wc -c`; echo -e "\x1b[$[ ($COLUMNS / 2) - ($L / 2) ]C$*"; }

xenomuta · 2012-08-16 18:19:26 6
Number of open connections per ip.

Count on a specific port (80) - FreeBSD friendly. Show Sample Output
This is sample output - yours may be different.
```
 25
```
0

netstat -an | grep 80 | wc -l

mrhassell · 2012-09-05 06:17:09 5
Count the number of lines of code, returns total

Searches for *.cpp and *.h in directory structure, counts the number of lines for each matching file and adds the counts together. Show Sample Output
This is sample output - yours may be different.
```
27586
```
0

find . $ -iname '*.cpp' -o -iname '*.h' $ -exec wc -l {} \; | sort -n | cut --delimiter=. -f 1 | awk '{s+=$1} END {print s}'

jecxjoopenid · 2012-09-19 15:21:01 5
Display CPU usage in percentage

Using the output of 'ps' to determine CPU usage is misleading, as the CPU column in 'ps' shows CPU usage per process over the entire lifetime of the process. In order to get *current* CPU usage (without scraping a top screen) you need to pull some numbers from /proc/stat. Here, we take two readings, once second apart, determine how much IDLE time was spent across all CPUs, divide by the number of CPUs, and then subtract from 100 to get non-idle time. Show Sample Output
This is sample output - yours may be different.
```
1.84% CPU Usage
```
0

NUMCPUS=`grep ^proc /proc/cpuinfo | wc -l`; FIRST=`cat /proc/stat | awk '/^cpu / {print $5}'`; sleep 1; SECOND=`cat /proc/stat | awk '/^cpu / {print $5}'`; USED=`echo 2 k 100 $SECOND $FIRST - $NUMCPUS / - p | dc`; echo ${USED}% CPU Usage

toxick · 2012-10-02 03:57:51 6
avoid ssh hangs using jobs

Execute commands serially on a list of hosts. Each ssh connection is made in the background so that if, after five seconds, it hasn't closed, it will be killed and the script will go on to the next system. Maybe there's an easier way to set a timeout in the ssh options...
This is sample output - yours may be different.
0

for host in $MYHOSTS; do ping -q -c3 $H 2>&1 1>/dev/null && ssh -o 'AllowedAuthe ntications publickey' $host 'command1; command2' & for count in 1 2 3 4 5; do sleep 1; jobs | wc -l | grep -q ^0\$ && continue; done; kill %1; done

a8ksh4 · 2012-11-13 23:12:27 5
avoid ssh hangs using jobs

Cleaned up and silent with &>/dev/null at the end. Show Sample Output
This is sample output - yours may be different.
```
Nothing.
```
0

for host in $HOSTNAMES; do ping -q -c3 $host && ssh $host 'command' & for count in {1..15}; do sleep 1; jobs | wc -l | grep -q ^0\$ && continue; done; kill %1; done &>/dev/null

somaddict · 2012-11-16 02:31:27 4
Returns top ten (sub)directories with the highest number of files

A lot of files in one dir is not so cool for filesystem.
This is sample output - yours may be different.
0

find . -type d | while read dir ; do num=`ls -l $dir | grep '^-' | wc -l` ; echo "$num $dir" ; done | sort -rnk1 | head

stderr · 2012-12-13 13:13:16 9
The letter your commands most often start with

Kind of fun if you're that was inclined. I figured most of my commands start with s. sudo, screen, ssh etc. This script tells me what else they start with. Show Sample Output
This is sample output - yours may be different.
```
685 s
255 g
251 c
193 l
130 p
83 n
81 m
70 r
56 d
24 u
23 a
22 t
14 i
14 h
13 f
11 o
7 e
4 w
4 v
4 j
3 k
3 b
1 x
0 z
0 y
0 q
```
0

for i in {a..z}; do echo $(cat ~/.bash_history | grep ^$i.* | wc -l) $i; done | sort -n -r

yaMatt · 2013-01-23 18:59:13 4
Count open file handles for a specific user ID
This is sample output - yours may be different.
0

for x in `ps -u 500 u | grep java | awk '{ print $2 }'`;do ls /proc/$x/fd|wc -l;done

akashrpatel · 2013-02-02 20:29:31 5
Count total processes for specific program and user
This is sample output - yours may be different.
0

ps -u user_name_here | grep process_name_here | wc -l

TuxLyn · 2013-02-07 01:46:29 8
calculate how many different lines between two files

calculate how many different lines between two files Show Sample Output
This is sample output - yours may be different.
```
jin@hellojinjie /cygdrive/d/tmp
$ grep -Fvxf va vb | wc -l
134
```
0

grep -Fvxf $(file1) $(file2) | wc -l

hellojinjie · 2013-03-27 05:25:15 4
Get the number of open sockets for a process
This is sample output - yours may be different.
0

ps aux | grep [process] | awk '{print $2}' | xargs -I % ls /proc/%/fd | wc -l

auser · 2013-04-03 09:40:03 7
find potentially malicious PHP commands used in backdoors and aliked scripts

I have found that base64 encoded webshells and the like contain lots of data but hardly any newlines due to the formatting of their payloads. Checking the "width" will not catch everything, but then again, this is a fuzzy problem that relies on broad generalizations and heuristics that are never going to be perfect. What I have done is set an arbitrary threshold (200 for example) and compare the values that are produced by this script, only displaying those above the threshold. One webshell I tested this on scored 5000+ so I know it works for at least one piece of malware.
This is sample output - yours may be different.
0

for ii in $(find /path/to/docroot -type f -name \*.php); do echo $ii; wc -lc $ii | awk '{ nr=$2/($1 + 1); printf("%d\n",nr); }'; done

faceinthecrowd · 2013-04-05 19:06:17 10
how much time restart the wls service?
This is sample output - yours may be different.
0

more restart_weblogic.log | grep "LISTEN" | awk '{ print $7 }' | uniq | wc -l

cuizhaohua · 2013-05-16 08:40:57 6
Count words in a TeX/LaTeX document.

Bases word count on the genreated PDF file; so make sure to update this first. The PDF file also includes references and output of any macros. Show Sample Output
This is sample output - yours may be different.
```
6756
```
0

pdftotext file.pdf - | wc -w

computermacgyver · 2013-06-01 16:29:04 14
total number of files inside current directory
This is sample output - yours may be different.
0

ls -R | wc -l

PradeepAmradi · 2013-06-05 08:56:00 8
One liner to check out CLOSE_WAIT and TIME_WAIT connection every five seconds while debugging network apps

This has saved me many times while debugging timeout issues to "too many open files" issues. A high number of the order of thousand, indicates that somewhere connection is not being closed properly. Show Sample Output
This is sample output - yours may be different.
```
      7
      7
```
0

while true; do netstat -a|grep WAIT|wc -l; sleep 5; done

adimania · 2013-06-19 09:19:41 13
find the number of files, date masked

RU: Найдет число файлов в папке по данной маске в цикле по дням месяца
This is sample output - yours may be different.
0

for i in {1..31}; do ls -1 *${YYYY}${MM}`printf "%02d" $i`* | wc -l; done

Paulus · 2013-07-26 07:08:04 8
Count music files in each directory

This lists the number of ogg/mp3/wav/flac files in each subdirectory of the current directory. The output can be sorted by piping it into "sort -n". Show Sample Output
This is sample output - yours may be different.
```
9955 .
82 ./16 Horsepower
17 ./17 Hippies
11 ./Abney Park
44 ./AC DC
10 ./Accept
1 ./Acceptance
9 ./Adiemus
6 ./Bran? Ketern?
10 ./Budapest Gypsy Symphony Orchestra
20 ./Budapester Klezmer Band
35 ./Buena Vista Social Club
12 ./Burlap To Cashmere
```
0

find . -type d -maxdepth 1 -print0 | xargs -0 -I{} sh -c 'find "{}" -type f | grep "ogg\|mp3\|wav\|flac$" | wc -l | tr -d "\n"; echo " {}"'

dbrgn · 2013-12-22 13:40:29 11
Count music files in each directory
This is sample output - yours may be different.
0

for i in */; do echo $(find $i -type f -regextype posix-extended -regex ".*\.(mp3|ogg|wav|flac)" | wc -l) $i ; done

mindfuckup · 2013-12-22 14:33:56 7
Save a result based on a command's output in a variable while printing the command output

Many circumstances call for creating variable of a summary result while still printing the original pipe. Inserting "tee >(cat >&2)" allows the command output to still be printed while permitting the same output to be processed into a variable. Show Sample Output
This is sample output - yours may be different.
```
Mar 11 18:02:35 hostname kernel: [    0.896119] [drm:intel_dp_i2c_aux_ch] *ERROR* 
Mar 11 18:02:35 hostname kernel: [    0.898782] [drm:intel_dp_i2c_aux_ch] *ERROR* 
Mar 11 18:02:35 hostname kernel: [    3.123365] [drm:udl_parse_] *ERROR* 

>> echo $num_errs
3
```
0

num_errs=`grep ERROR /var/log/syslog | tee >(cat >&2) | wc -l`

accountholder · 2014-03-12 00:04:24 11
‹ First < 3 4 5 6 7 >

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Easy and fast access to often executed commands that are very long and complex.

When using reverse-i-search you have to type some part of the command that you want to retrieve. However, if the command is very complex it might be difficult to recall the parts that will uniquely identify this command. Using the above trick it's possible to label your commands and access them easily by pressing ^R and typing the label (should be short and descriptive). UPDATE: One might suggest using aliases. But in that case it would be difficult to change some parts of the command (such as options, file/directory names, etc).

Console clock

A console clock with the current time.

List only hidden files

You can omit the -d to see what's inside directories. In that case, you may want -a to see dotfiles inside those directories. (Otherwise you don't need -a since you're explicitly looking at them.)

pretend to be busy in office to enjoy a cup of coffee

using seq inside a subshell instead of a bash sequence to create increments.

Rsync two directories with filtered extensions

print all except first collumn

Terminal redirection

can display the commands and their output to another user who is connected to another terminal, by example pts/3

worse alternative to

worse alternative to ctrl+r: grep the history removing duplicates without sorting (case insensitive search).

Create a new file

check open ports without netstat or lsof

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Commands using wc (172)

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