Commands by eddieb

Commands by eddieb (3)

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Recursively search and replace old with new string, inside every instance of filename.ext

This is a slightly modified version of http://www.commandlinefu.com/commands/view/4283/recursive-search-and-replace-old-with-new-string-inside-files (which did not work due to incorrect syntax) with the added option to sed inside only files named filename.ext
This is sample output - yours may be different.
1

find . -type f -name filename.exe -exec sed -i "s/oldstring/oldstring/g" {} +;

eddieb · 2013-05-20 19:17:10 12
Show list of packages that depend upon 'packagename'

'yum deplist XXX' provides a list of packages that XXX depends on. This command provides a list of packages that depend upon XXX (package reverse dependencies) Show Sample Output
This is sample output - yours may be different.
```
> repoquery --whatrequires --installed --recursive unzip
unzip-0:6.0-1.el6.x86_64
virtualmin-base-0:1.0-63.rh.noarch
```
0

repoquery --whatrequires --installed --recursive packagename

eddieb · 2012-09-06 18:20:05 5
Easy way to display yum repo priorities

This probably only works without modifications in RHEL/CentOS/Fedora. Show Sample Output
This is sample output - yours may be different.
```
priority = 1 [asl-3.0]
priority = 1 [asl-3.0-testing]
priority = 1 [base]
priority = 1 [virtualmin]
priority = 1 [virtualmin-universal]
priority = 50 [epel]
```
0

sed -n -e "/^\[/h; /priority *=/{ G; s/\n/ /; s/ity=/ity = /; p }" /etc/yum.repos.d/*.repo | sort -k3n

eddieb · 2012-09-06 00:09:09 9

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Summarise the size of all files matching a simple regex

Use the find command to match certain files and summarise their total size in KBytes.

shows the full path of shell commands

generate a telephone keypad

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Disable WoL on eth0

See system users

journalctl -f

a tail -f variant of systemd journal. Follow the most recent updates or if events are appended to the journal

Check if a remote port is up using dnstools.com (i.e. from behind a firewall/proxy)

Shell function; returns 0 if the port is up, 1 otherwise (check $? after executing). First parameter: IP address/hostname Second parameter: port number There is no error checking for the input parameters.

Change the homepage of Firefox

This command modifies the preferences file of Firefox that is located in .mozilla/firefox/*.default/prefs.js. It edits the file with sed and the -i option. Then it searches the string "browser.startup.homepage", and the string next to it (second string). Finally, it replaces the second string with the new homepage, that is http://sliceoflinux.com in the example. It doesn't work if you haven't set any homepage.

Create a Multi-Part Archive Without Proprietary Junkware

Leave it to a proprietary software vendor to turn a cheap and easy parlor trick into a selling point. "Hey guys, why don't we turn our _collection of multiple files_ into a *collection of multiple files*!!" Extract the ^above with this: $ cat pics.tar.gz.??? | tar xzv ^extract on any Unix - no need to install junkware! (If you must make proprietary software, at least make it do something *new*) if [ -e windows ]; then use 7-Zip

Re-emerge all ebuilds with missing files (Gentoo Linux)

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