1. Typically when we switch between laptop to dell monitor, it is better to resize the VNC.
To resize the VNC without creating another VNC session, we can use xrandr. I generally use aliases to switch between laptop and monitor.
alias dellsize "xrandr -s 1920x1080"
alias lapsize "xrandr -s 1360x768
2. If we make set of TB/RTL changes in our local dir and if we want to review one by one against the SVN database, below command will be very useful.
svn diff --diff-cmd tkdiff
3.
Vim tips:-
| :g/pattern/z#.5|echo
"==========" |
Display context
(5 lines) for all occurrences of a pattern. |
| :g/pattern/normal@c |
Perform
macro recorded at c on all the lines containing the pattern |
| :v/./,/./-j |
Merge
all blank lines into single blank line |
| :g/^/m0 |
Reverse
the file |
| :g/pattern/t$ |
Copy
all the lines matching pattern to the end of the file |
| 0"ay0:g/<pattern>/y A |
Yank
all lines matching a pattern to register 'a' |
| :g/^/pu _ |
Double
space the file |
| :.,$g/^\d/exe "normal! \<C-A>" |
Increment
numbers from current line to end-of-document by one (this assumes the default
behavior of Ctrl-A to increment a number; you might need :unmap <C-A>
on Windows). |
| :g/DEBUG/exe "norm! I/*\<Esc>A*/\<Esc>" |
Comment
lines containing "DEBUG" statements in a C program. |
:let i=0 | 'a,'bg/xyz/s/xyz/\=i/ | let i=i+1
|
Insert
incremental numbers |
:%s/\d\+/\=(submatch(0)+3)/
|
Increment
all the integers by constant |
| :registers or :reg c |
Will
display the contents of all the registers |
| :%s/^.*$/\U&/g |
Changing
to Upper case letters |
| :%s/^.*$/\L&/g |
Changing
to Lower case letters |
|
|
4. Command line:-
| perl -pi -e ’s/lookFor/replaceWith/g’ *.fileExtension | Single line replace script |
| perl -n -e 'if ( /<tag/ .. /<\/tag/)' -e '{ print "$.:$_"; }' file.xml | Match all the patterns from <tag> to </tag> and print |
| ls abc* | sed 's/\(abc_\)\(.*\)/cp "\1\2" "\2"/' |sh | Copy files with removing some prefix |
| echo | mutt -s "simple mail sending perl script but not working" -a send_mail.pl tgunasekaran@micron.com | Sending mail from Linux server with attachment file |
| pwd | rev | awk -F \/ '{print $1}' | rev | Extracting current directory from PWD |
| bc | Mathematical calculator in Linux |
|
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| sed -i".bak" '/max_errors/d' *.py | Remove the line containing max_errors from all *py files. Then remove all *.bak files |
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Good one!
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