Commands by RedFox

Commands by RedFox (12)

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Create backup copy of file and keep modified date and time

Use shell expansion to create a back-up copy (file.txt.bak) of a file (file.txt) and keep the original last modified date and time.
This is sample output - yours may be different.
0

cp -p file.txt{,.bak}

RedFox · 2014-09-12 13:49:26 9
Arguments too long
This is sample output - yours may be different.
1

find . -name "*.txt" -exec WHATEVER_COMMAND {} \;

RedFox · 2014-03-12 11:49:41 6
Find and replace text within all files within a directory

find . = will set up your recursive search. You can narrow your search to certain file by adding -name "*.ext" or limit buy using the same but add prune like -name "*.ext" -prune xargs =sets it up like a command line for each file find finds and will invoke the next command which is perl. perl = invoke perl -p sets up a while loop -i in place and the .bak will create a backup file like filename.ext.bak -e execute the following.... 's/ / /;' your basic substitute and replace.
This is sample output - yours may be different.
0

find . | xargs perl -p -i.bak -e 's/oldString/newString/;'

RedFox · 2012-11-28 17:11:18 4
Sum of directories
This is sample output - yours may be different.
0

du -sh *

RedFox · 2012-11-28 17:07:55 4
Total sum of directories
This is sample output - yours may be different.
0

du -sh

RedFox · 2012-11-28 17:07:08 5
Check Zone File
This is sample output - yours may be different.
0

named-checkzone {zonename} {filename}

RedFox · 2012-11-28 17:06:28 4
Matching Strings
This is sample output - yours may be different.
0

grep -l <string-to-match> * | xargs grep -c <string-not-to-match> | grep '\:0'

RedFox · 2012-11-28 17:03:46 8
Delete Empty Files
This is sample output - yours may be different.
0

find . -size 0c -print -exec rm -f {} \;

RedFox · 2012-11-28 17:03:07 5
ls -altr | grep ^d
This is sample output - yours may be different.
0

ls -altr | grep ^d

RedFox · 2012-11-28 17:02:11 4
find . \( -name \*.cgi -o -name \*.txt -o -name \*.htm -o -name \*.html -o -name \*.shtml \) -print | xargs grep -s pattern
This is sample output - yours may be different.
0

find . \( -name \*.cgi -o -name \*.txt -o -name \*.htm -o -name \*.html -o -name \*.shtml \) -print | xargs grep -s pattern

RedFox · 2012-11-28 17:01:37 4
find . -type f -exec grep -ils stringtofind {} +
This is sample output - yours may be different.
0

find . -type f -exec grep -ils stringtofind {} +

RedFox · 2012-11-28 13:10:07 4
find . -name "*" -print | xargs grep -s pattern
This is sample output - yours may be different.
0

find . -name "*" -print | xargs grep -s pattern

RedFox · 2012-11-28 13:09:35 4

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list block devices

Shows all block devices in a tree with descruptions of what they are.

play high-res video files on a slow processor

Certain codecs in high res don't play so well on my Dell Mini 9. Using this command, I can play just about anything and it keeps the sound in sync to boot!

A simple command to toggle mute with pulseaudio (any sink)

0 can also be replaced by the source name, e.g. alsa_output.pci-0000_00_1b.0.analog-stereo

check open ports without netstat or lsof

Find directories under home directory with 777 permissions, change to 755, and list them on console

Create a new file

Working random fact generator

extension to tali713's random fact generator. It takes the output & sends it to notify-osd. Display time is proportional to the lengh of the fact.

show all programs connected or listening on a network port

Use the aliased command 'nsl'

Update grub menu.lst

Remove all commented lines Remove all blank lines Show the menu Up the delay so you have enough time to select a kernel Remove the quiet so you can watch the entire boot Add a rootdelay for san attached storage booting

Get creation date of a file on ext2-3-4 fs

Return the creation date of a file on ext2, 3, 4 filesystems, because stat command won't show it. Useful on ubuntu, debian, and else

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