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Commands by evandrix from sorted by
Terminal - Commands by evandrix - 49 results
scalac quicksort.scala && javap QuickSort
egrep -in "this|that" *.dat
2011-07-06 09:42:26
User: evandrix
Functions: egrep
-5

grep - Search file for character string

Search for one or more strings in one or more files. Examples:-

grep that myfile.txt

Look for the string ``that'' in the file called ``myfile.txt'' and print out each line that matches.

egrep -in "this|that" *.dat

Extended grep search *.dat files for ``this'' or ``that'' case insensitive (-i) and where found print line number (-n) along with the line contents.

sudo env ARCHFLAGS="-arch x86_64" gem install mysql
find . -name .svn -type d | parallel rm -rf
gem env
git branch -a | grep "remotes/origin" | grep -v master | awk -F / '{print $3}' | xargs -I % git clone -b % git://github.com/jamesotron/DevWorld-2010-Cocoa-Workshop %
gnutls-cli -V -r www.google.com |grep 'Session ID'
ps -eo pid,args | grep -v grep | grep catalina | awk '{print $1}'
echo .DS_Store >> ~/.gitignore
2011-06-24 12:10:25
User: evandrix
Functions: echo
1

With a couple of little commands, you?ll be able to ignore the .DS_Store files forever from your git repositories on mac!

The following command will add the .gitignore file to the git configuration

git config --global core.excludesfile ~/.gitignore

then, the following, will add the .DS_Store to the list

echo .DS_Store >> ~/.gitignore

cat /etc/*-release
git push origin :gh-pages
find . | grep ".*\[[Church|CPYAF].*" | while read f; do mv "$f" ../emails;done
python -c "from distutils.sysconfig import get_python_lib; print get_python_lib()"
sed -n -e 1186,1210p A-small-practice.in
2011-06-04 10:53:46
User: evandrix
Functions: sed
Tags: sed
-1

Using sed to extract lines in a text file

If you write bash scripts a lot, you are bound to run into a situation where you want to extract some lines from a file. Yesterday, I needed to extract the first line of a file, say named somefile.txt.

cat somefile.txt

Line 1

Line 2

Line 3

Line 4

This specific task can be easily done with this:

head -1 somefile.txt

Line 1

For a more complicated task, like extract the second to third lines of a file. head is inadequate.

So, let's try extracting lines using sed: the stream editor.

My first attempt uses the p sed command (for print):

sed 1p somefile.txt

Line 1

Line 1

Line 2

Line 3

Line 4

Note that it prints the whole file, with the first line printed twice. Why? The default output behavior is to print every line of the input file stream.

The explicit 1p command just tells it to print the first line .... again.

To fix it, you need to suppress the default output (using -n), making explicit prints the only way to print to default output.

sed -n 1p somefile.txt

Line 1

Alternatively, you can tell sed to delete all but the first line.

sed '1!d' somefile.txt

Line 1

'1!d' means if a line is not(!) the first line, delete.

Note that the single quotes are necessary. Otherwise, the !d will bring back the last command you executed that starts with the letter d.

To extract a range of lines, say lines 2 to 4, you can execute either of the following:

sed -n 2,4p somefile.txt sed '2,4!d' somefile.txt

Note that the comma specifies a range (from the line before the comma to the line after).

What if the lines you want to extract are not in sequence, say lines 1 to 2, and line 4?

sed -n -e 1,2p -e 4p somefile.txt

Line 1

Line 2

Line 4

sed -i 3d ~/.ssh/known_hosts
sed '/^$/d' /tmp/data.txt > /tmp/output.txt
ssh -X johndoe@123.456.789
2011-05-19 21:28:25
User: evandrix
Functions: ssh
-5

To start X11 display only on your local machine: xeyes &

Extensions to basic command: ssh -X -f user@remotehost xcalc -bg black -fg green

find . -type f -iname '*.java.orig' -delete
ls -l $(type -path -all java)
2011-05-12 17:25:39
User: evandrix
Functions: ls type
1

The output will likely point to '/etc/alternatives/java'.

So find out where that points by issuing ls -l like this:

ls -l /etc/alternatives/java

gconf-editor /apps/evolution/mail/composer/no_signature_delim false
netstat -a -o -n | grep 8080
2011-04-28 09:58:59
User: evandrix
Functions: grep netstat
0

I cannot run Tomcat from Eclipse. It says that there?s other process that is running on port 8080, but I don?t know what is the process, and how to stop it from the Services manger in Windows. So here?s how you can kill and find out what is that process:

To find out what PID 8080 was (hopefully not a trojan)

I typed tasklist /FI ?PID eq 8080″

taskkill /F /PID 2600

type -a python
!!:gs/data/index/
find . -exec touch {} \;