Commands using tr sorted by votes

Commands using tr (349)

sorted by

Show the command line for a PID, converting nulls to spaces and a newline
This is sample output - yours may be different.
2

tr '\0' ' ' </proc/21679/cmdline ; echo

pdxdoughnut · 2015-09-25 22:08:31 16
detect the fastest ldap server on a intranet

This command line detect ldap hosts, by mandatory dns entry, then ping them to detect response average. based on ping response average it sorts and print the faster server in first output line Show Sample Output
This is sample output - yours may be different.
```
0.431   srv4-srv-dc-p01.yourdomain.br
0.431   srv1-srv-dc-p01.yourdomain.br
0.668   srv1-srv-dc-p02.yourdomain.br
1.168   srv3-srv-dc-p01.yourdomain.br
7.778   srv2-srv-dc-p01.yourdomain.br
```
2

host -t srv _ldap._tcp | sed "s/.*[ ]$[^ ]*$[.]$/\1/g" | xargs -i ping -c 1 {} | grep -E "(statistics|avg)" | sed "s/^--- $[^ ]*$.*/,\1:/g"|tr -d "\n" | tr "," "\n" | sed "1d;s|^$[^:]*$.*=[^/]*/$[^/]*$.*|\2\t\1|g" |sort -n

glaudiston · 2016-09-02 03:26:29 15
draw mesh
This is sample output - yours may be different.
2

seq -s " \\_/" 256|tr -d "0-9"|fold -70

knoppix5 · 2018-11-12 23:25:25 1034
command shell generate random strong password

shell generate random strong password Show Sample Output
This is sample output - yours may be different.
```
NXuc2VjRcOhW7zyQDBhH
```
2

len=20; tr -dc A-Za-z0-9_ < /dev/urandom | head -c ${len} | xargs

aysadk · 2019-04-16 20:20:46 38
draw line separator

Even shorter: seq -s '*' 120|tr -d '[0-9]'
This is sample output - yours may be different.
2

seq -s '*' 40|tr -c '*' '*' && echo

knoppix5 · 2019-06-30 13:40:53 88

Get all upgradable deb packages in a single line

Works for debian and ubuntu based distros. Show Sample Output

apt list --upgradable | grep -v 'Listing...' | cut -d/ -f1 | tr '\r\n' ' ' | sed '$s/ $/\n/'

bugmenot · 2019-12-13 16:16:19 214

rename / move Uppercase filenames to lowercase filenames current directory

move filename/rename filenames with Uppercase to lowercase in current directory Show Sample Output
This is sample output - yours may be different.
```
 FileList=$(ls); for FName in $FileList; do LowerFName=$(echo "$FName" | tr '[:upper:]' '[:lower:]'); echo $FName" rename/move to $LowerFName"; mv $FName $LowerFName;  done
```
2

FileList=$(ls); for FName in $FileList; do LowerFName=$(echo "$FName" | tr '[:upper:]' '[:lower:]'); echo $FName" rename/move to $LowerFName"; mv $FName $LowerFName; done

aysadk · 2021-01-06 16:11:00 297
Output requirements.txt packages pinned to latest version

Given a requirements.txt file with unpinned package names, output the packages pinned to the latest version. Handy to copy/paste back into your requirements.txt when you start a new project. Note that this will download packages but not install them. Show Sample Output
This is sample output - yours may be different.
```
Django==4.1
black==22.6.0
django-filter==22.1
djangorestframework==3.13.1
ipython==8.4.0
requests==2.28.1
```
2

pip install -r requirements.txt --dry-run --no-deps --ignore-installed | tail -n1 | tr ' ' '\n' | tail -n+3 | sed -e "s/$.*$-/\1==/"

katylava · 2022-08-12 20:33:11 462
Validate openssh key & print checksum
This is sample output - yours may be different.
1

ssh-keygen -l -f [pubkey] | awk '{print $2}' | tr -ds ':' '' | egrep -ie "[a-f0-9]{32}"

wwest4 · 2009-02-05 17:42:30 16
Delete newline
This is sample output - yours may be different.
1

tr -d "\n" < file1 > file2

speirs · 2009-02-18 06:53:57 8
Scan a gz file for non-printable characters and display each line number and line that contains them.

Scans the file once to build a list of line numbers that contain non-printable characters Scans the file again, passing those line numbers to sed as two commands to print the line number and the line itself. Also passes the output through a tr to replace the characters with a ? Show Sample Output
This is sample output - yours may be different.
```
1
Hi, I'm a line with ctrl?characters
53
I?m another line
```
1

zcat a_big_file.gz | sed -ne "$(zcat a_big_file.gz | tr -d "[:print:]" | cat -n | grep -vP "^ *\d+\t$" | cut -f 1 | sed -e "s/$[0-9]\+$/\1=;\1p;/" | xargs)" | tr -c "[:print:]\n" "?"

DEinspanjer · 2009-02-24 02:57:37 13
Simple word scramble

enlubtsqyuse cat /tmp/out subsequently Show Sample Output
This is sample output - yours may be different.
```
enlubtsqyuse
```
1

shuf -n1 /usr/share/dict/words | tee >(sed -e 's/./&\n/g' | shuf | tr -d '\n' | line) > /tmp/out

jnash · 2009-04-05 05:29:06 7
Find and delete oldest file of specific types in directory tree

This works on my ubuntu/debian machines. I suspect other distros need some tweaking of sort and cut. I am sure someone could provide a shorter/faster version.
This is sample output - yours may be different.
1

find / $ -name "*.log" -o -name "*.mylogs" $ -exec ls -lrt {} \; | sort -k6,8 | head -n1 | cut -d" " -f8- | tr -d '\n' | xargs -0 rm

ghazz · 2009-05-10 10:45:48 8
Check wireless link quality with dialog box

The variable WIRELESSINTERFACE indicates your wireless interface
This is sample output - yours may be different.
1

while [ i != 0 ]; do sleep 1 | dialog --clear --gauge "Quality: " 0 0 $(cat /proc/net/wireless | grep $WIRELESSINTERFACE | awk '{print $3}' | tr -d "."); done

ncaio · 2009-05-31 16:09:23 12
Beep siren

Infinitely plays beeps with sinusoidally changing sound frequency. Ideal for alarm on an event.
This is sample output - yours may be different.
1

tempo=33; slope=10; maxfreq=888; function sinus { echo "s($1/$slope)*$maxfreq"|bc -l|tr -d '-'; }; for((i=1;;i++)); do beep -l$tempo -f`sinus $i`; done

5z474n · 2009-07-10 21:24:11 3
Analyze awk fields

translate and number lines is simpler and you use tr to choose your delimiter (eg for csv files) Show Sample Output
This is sample output - yours may be different.
```
 echo foo bar this is line one | tr " " "\n" | nl
     1  foo
     2  bar
     3  this
     4  is
     5  line
     6  one
```
1

tr " " "\n" | nl

dendoes · 2009-08-13 14:36:18 17
check the fucking weather

grab the weather, with a little expletive fun. replace the 48104 with a US zipcode, or the name of your city (such as ZIP="oslo"), unless you want to know what the weather is like for me (and that's fine too) Show Sample Output
This is sample output - yours may be different.
```
70 - ITS FUCKING NICE
```
1

ZIP=48104; curl http://thefuckingweather.com/?zipcode=$ZIP 2>/dev/null|grep -A1 'div class="large"'|tr '\n' ' '|sed 's/^.*"large" >$..$/\1/;s/&d.* <br \/>/ - /;s/<br \/>//;s/<\/div.*$//'

sleepynate · 2009-08-29 19:33:35 102
Sort a character string

Sorts a character string, using common shell commands. Show Sample Output
This is sample output - yours may be different.
```
$ echo sortmeplease | grep -o . | sort | tr -d '\n'; echo
aeeelmoprsst
```
1

echo sortmeplease | grep -o . | sort | tr -d '\n'; echo

MrMerry · 2009-09-03 00:52:49 28
encode image to base64 and copy to clipboard

I use it for embedding images in CSS for Stylish, the Firefox addon. Thought it might be useful to others.
This is sample output - yours may be different.
1

uuencode -m $1 /dev/stdout | sed '1d' | sed '$d' | tr -d '\n' | xclip -selection clipboard

caliburning · 2009-10-19 09:03:09 4
generate random password

generate password Show Sample Output
This is sample output - yours may be different.
```
15fIrGab5C
```
1

cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 10 | sed 1q

gnuyoga · 2009-12-01 09:09:56 6
Using numsum to sum a column of numbers.

if you, like me, do not have the numsum, this way can do the same. Show Sample Output
This is sample output - yours may be different.
```
1653
```
1

echo $(( $( cat count.txt | tr "\n" "+" | xargs -I{} echo {} 0 ) ))

glaudiston · 2010-01-27 10:02:30 4
converting vertical line to horizontal line
This is sample output - yours may be different.
1

tr '\n' '\t' < inputfile

eastwind · 2010-03-15 08:06:42 6
Extract title from HTML files

not the best, uses 4 pipes!
This is sample output - yours may be different.
1

tr -d "\n\r" | grep -ioEm1 "<title[^>]*>[^<]*</title" | cut -f2 -d\> | cut -f1 -d\<

bandie91 · 2010-04-20 18:55:24 3
happened to find this not bad software to keep my files and folders safe! Even the free trial version has the fantastic functions to protect any private files from being seen by anyone except me. With it I can encrypt, hide or lock anything I want, amazin

I noticed some spammer posted an advertisement here for "not bad" encryption. Unfortunately, their software only runs under Microsoft Windows and fails to work from the commandline. My shell script improves upon those two aspects, with no loss in security, using the exact same "military-grade" encryption technology, which has the ultra-cool codename "ROT-13". For extra security, I recommend running ROT-13 twice. Show Sample Output
This is sample output - yours may be different.
```
Lrf, guvf vf n wbxr. Cyrnfr qba'g engr zr qbja.
```
1

tr '[A-Za-z]' '[N-ZA-Mn-za-m]'

hackerb9 · 2010-04-30 10:07:27 13
sum numbers in the file (or stdin)

add integers from the stdin and print out the result usually, cat /tmp/file | echo $(($(tr '\n' '+')0)) Show Sample Output
This is sample output - yours may be different.
```
1
1
^D
2
```
1

echo $(($(tr '\n' '+')0))

whiskybar · 2010-06-01 18:42:39 3
‹ First < 3 4 5 6 7 > Last ›

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Check These Out

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

strips the first field of each line where the delimiter is the first ascii character

Audible warning when a downloading is finished

This command can be set as an alias in ~/.bashrc For example (in my case) I have : alias watchDl='while [ "$(ls $filePart)" != "" ]; do sleep 5; done; mpg123 /home/.../warning.mp3" ' Then I just need to - initialize filePart (e.g. filePart="*bigFile*rar.part") - launch watchDl

Resolve the "all display buffers are busy, please try later" error on a Foundry

Find the package a command belongs to on debian-based distros

Check SATA link speed.

Check SATA controller type. 6.0 Gbps - SATA III 3.0 Gbps - SATA II 1.5 Gbps - SATA I

colored tail

a function to create a box of '=' characters around a given string.

First argument: string to put a box around. Second argument: character to use for box (default is '=') Same as command #4948, but shorter, and without the utility function.

benchmark web server with apache benchmarking tool

-n 9000 : Number of requests to perform for the benchmarking session -c 900 : Number of multiple requests to perform at a time

insert ip range using vim

fast method for insert ip range using vim

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10

Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for:

» all commands
» commands with 3 up-votes (commandlinefu3)
» commands with 10 up-votes (commandlinefu10)
» commands using tr

Commands using tr (349) the last day the last week the last month all time sorted by date votes

What's this?

Check These Out

Stay in the loop…

Commands using tr (349)

sorted by