Commands by djangofan

Commands by djangofan (7)

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A 'favorite' command.

Command 'favorite' to store your favorite commands from history. Show Sample Output
This is sample output - yours may be different.
```
#!/bin/bash

# needs an implementation that works
# alternative submissions wanted
```
-3

favorite --add myhost 'ssh me@myhost'

djangofan · 2017-01-23 18:15:03 1
Suspend, background, and foreground a process

1. Start a process, such as 'top' command 2. # suspend process {ctrl-Z} 3. # background process bg 4. # list all backgrounded jobs jobs 5. # bring it back to foreground fg
This is sample output - yours may be different.
1

top; ctrl-z; bg; jobs; fg

djangofan · 2015-10-14 17:33:25 0
Pretty print output of

Show Sample Output
This is sample output - yours may be different.
```
1:
root
3410
00:00:00
gpm -m /dev/input/mice -t exps2

2:
root
3424
00:00:00
crond

3:
root
3488
00:00:00
/usr/sbin/atd
```
-8

ps -ef | awk -v OFS="\n" '{ for (i=8;i<=NF;i++) line = (line ? line FS : "") $i; print NR ":", $1, $2, $7, line, ""; line = "" }'

djangofan · 2012-12-04 15:59:53 1
Add executable bit to all shell scripts under current directory recursively.

An example of this command that includes the -name arg. Show Sample Output
This is sample output - yours may be different.
```
No output.
```
0

find . -type f -name "*.sh" -exec chmod u+x {} \;

djangofan · 2012-08-09 18:10:22 0
extract element of xml

Prints the value of a XML node rather than the entire node.
This is sample output - yours may be different.
2

xmlstarlet sel -t -v "/path/to/element" file.xml

djangofan · 2011-12-21 21:49:56 0
CPIO better than TAR

Archive all .sh files in a directory into a gzip archive.
This is sample output - yours may be different.
0

find . -type f -name '*.sh' -print | cpio -o | gzip >sh.cpio.gz

djangofan · 2011-12-21 21:13:29 0
Modify all files newer than another file and touch them to a specific date.

Modify all files newer than another file and touch them to a specific date. Show Sample Output
This is sample output - yours may be different.
```
None.  Check it with 'ls -al'
```
0

find . -newer /tmp/foo -exec touch --date "2011-12-12" {} \;

djangofan · 2011-12-15 04:55:57 0

What's this?

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move up through directories faster (set in your /etc/profile or .bash_profile)

You can also remove the "&& pwd" if you don't want it to print out each directory as it moves up.

List all open ports and their owning executables

Particularly useful on OS X where netstat doesn't have -p option.

no # comments, blank lines, white space. # can start in any column

The shortest and most complete comment/blank line remover... Any line where the first non-whitespace character is # (ie, indented # comments), and all null and blank lines are removed. Use the alias as a filter: $ noc /etc/hosts or $ grep server /etc/hosts | noc Change to nawk depending awk versions.

Record live sound in Vorbis (eg for bootlegs or to take audio notes)

This will record the capture channel of your soundcard, directly encoded in Ogg Vorbis, in stereo at quality 5 (I'm using this to record live jam sessions from my line input). You can choose which device to capture (eg. line input, microphone or PCM output) with $ alsamixer -V capture You can do the same thing and live encode in MP3 or FLAC if you wish, just check FLAC and LAME man pages.

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Countdown Clock

Simple countdown clock that should be quite portable across any Bourne-compatible shell. I used to teach for a living, and I would run this code when it was time for a break. Usually, I would set "MIN" to 15 for a 15-minute break. The computer would be connected to a projector, so this would be projected on screen, front and center, for all to see.

convert video to gif by ffmpeg and imagemagick

you can use any common video format. if you don't need to change the size of gif output, just remove `-vf scale=320:-1` btw, 320:-1 means width is 320px and height would be set automatically

send a circular

shell bash iterate number range with for loop

validate xml in a shell script using xmllint

Stay in the loop…

Follow the Tweets.

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