Commands by sergeylukin

Commands by sergeylukin (7)

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List directories sorted by size
This is sample output - yours may be different.
-1

du -sh * | sort -h

sergeylukin · 2015-09-14 10:24:06 11
Find files/directories newer than X

Sometimes you just want to operate on files that were created after specific date. This command consists of 3 commands: - Create a dummy file with the custom date - Find all files with "creation time" further than our custom date by using `-newer` find option. Add your crazy stuff here, like moving, deleting, printing, etc. - Remove the dummy file Show Sample Output
This is sample output - yours may be different.
```
./afile
./bfile
```
-1

touch -t 197001010000 ./tmp && find . -newer ./tmp && rm -f ./tmp

sergeylukin · 2014-11-18 00:29:26 8
Compile all gettext source files

This command takes all `.po` files inside `i18n` directory and compiles them to `.mo` files with same basename
This is sample output - yours may be different.
0

find ./i18n -name "*.po" | while read f; do msgfmt $f -o ${f%.po}.mo; done

sergeylukin · 2014-11-14 19:14:35 12
Write a shell script that removes files that contain a string

After this command you can review doit.sh file before executing it. If it looks good, execute: `. doit.sh`
This is sample output - yours may be different.
-3

find . | xargs grep -l "FOOBAR" | awk '{print "rm -f "$1}' > doit.sh

sergeylukin · 2014-04-06 15:48:41 9
Search and replace in multiple files recursively

Replace "foo" with "bar" in all files in current directory recursively
This is sample output - yours may be different.
1

grep -lr "foo" . | xargs sed -i "s/foo/bar/g"

sergeylukin · 2013-10-28 13:02:47 11
Copy file to multiple destinations
This is sample output - yours may be different.
0

cat myfile | tee dest1 dest2 > /dev/null 2>&1

sergeylukin · 2012-11-28 09:51:25 5
Monitor file contents that is being overwritten regularly

Watch file's contents that is getting overwritten Show Sample Output
This is sample output - yours may be different.
```
File contents
Which is beings updated every second
```
0

while sleep 1; do clear; cat /tmp/whatever.cue; done

sergeylukin · 2012-11-26 08:02:03 7

What's this?

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Merge files, joining each line in one line

Change every instance of OLD to NEW in file FILE

Very quick way to change a word in a file. I use it all the time to change variable names in my PHP scripts (sed -i 's/$oldvar/$newvar/g' index.php)

Check syntax of all Perl modules or scripts underneath the current directory

Finds all *.p[ml]-files and runs a perl -c on them, checking whether Perl thinks they are syntactically correct

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Remind yourself to leave in 15 minutes

If you spend most of your time in front of the terminal, leave is a useful reminder. Leave can have absolute form: leave 1555 reminds you to leave at 3:55PM

Calculate days on which Friday the 13th occurs (inspired from the work of the user justsomeguy)

Friday is the 5th day of the week, monday is the 1st. Output may be affected by locale.

Creates a symbolic link or overwrites an existing one

-n: dereference the existing link -v: (optional) to be sure of what is being done -f: force the deletion of the existing one -s: creates a symlink Be careful: the destination can also be a file or a directory and it will be overwritten.

Write comments to your history.

A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

Create multiple subfolders in one command.

Instead of typing separate commands to create various subfolders, we can create multiple subfolders by listing them between brackets and separated by commas.

Monitor changed files into a log file, with day rotation, using fswatch (MacOS)

This command monitors changes in the current folder structure (subfolders included) and files, and log it into a hidden file in the same folder, called `.file_changes_YYMMDD.log`. Modify the `--exclude` parameters to define what should be skipped.

Stay in the loop…

Follow the Tweets.

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