Commands tagged bash, ksh, function sorted by votes

Commands tagged bash, ksh, function (1)

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test for ksh/bash

Dave Korn gave me this one. It works because ksh allows variable names ( w/o the $name syntax ) used by sh and bash. I wrote it to permit "single source" shell libraries; the current objective: every shell library may be sourced by either shell. see http://github.com/applemcg/backash Show Sample Output
This is sample output - yours may be different.
```
.$ PS1='$ '
$ sh_PS1
B.bin.$ cat .i
function sh_PS1 
{
    isKsh && {
        PS1="K.\$(basename \$PWD).$ "
    } || {
        PS1="B.\W.$ "
    }
}
B.bin.$ 
```
2

isKsh () { one=1; [ one -eq 1 ] 2> /dev/null; }

applemcg · 2014-11-18 20:45:12 12

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Get a diff of two json arrays

jq is amazing for manipulating json on the commandline, but the developers have some weird ideas about how to handle shell redirections. This command works around them. Further reading: https://github.com/stedolan/jq/issues/1110

Get a list of all TODO/FIXME tasks left to be done in your project

Place this in your .bashrc (or run it once) to set the `tasks` alias. Next time you enter `tasks` into a terminal, it will give you a list of all TODO and FIXME comments in the current directory and child directories, giving you a quick overview of what you still have to do!

Bash logger

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Kill XMMS for a cron job

Randomly run command

Randomly decide whether to run a command, or fail. It's useful for testing purposes. . Usage: ran PERCENTAGE COMMAND [ARGS] Note: In this version the percentage is required. . This is like @sesom42 and @snipertyler's commands but in a USABLE form. . e.g. In your complicated shell script, put "ran 99" before a crucial component. Now, it will fail 1% of the time allowing you to test the failure code-path. $ ran 99 my_complex_program arg1 arg2

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

static noise effect (crt effect)

Synchronize date and time with a server over ssh

If you are stuck behind a firewall and want to synchronize time with another server but you do not want to port forward NTP (which uses UDP) then this command is handy. It gets the time from a server and sets the local time. It is not that accurate but I can live with a second or so drift.

list block devices

Shows all block devices in a tree with descruptions of what they are.

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