Cygwin first run and a few aliases
Posted by jpluimers on 2016/04/06
Cygwin first run looks like this:
Copying skeleton files. These files are for the users to personalise their cygwin experience. They will never be overwritten nor automatically updated. './.bashrc' -> '/home/jeroenp//.bashrc' './.bash_profile' -> '/home/jeroenp//.bash_profile' './.inputrc' -> '/home/jeroenp//.inputrc' './.profile' -> '/home/jeroenp//.profile' jeroenp@msmxp ~ $
It will copy some default files to your profile so you can modify them.
Since Cygwin will run ~/.bash_profile on logon, and that in turn starts ~/.bashrc (see below), I’ve modified the latter to run ~/.bash_aliases and bring those a bit in sync with my regular Mac machine:
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| # New user-defined bash aliases file | |
| # Is executed from a modified .bashrc file | |
| # .bashrc is executed from .bash_profile on cygwin | |
| # on other systems, see http://www.joshstaiger.org/archives/2005/07/bash_profile_vs.html | |
| ## This is the portion in .bashrc you need to edit in cygwin to enable .bash_aliases: | |
| ## Aliases | |
| ## | |
| ## Some people use a different file for aliases | |
| ## if [ -f "${HOME}/.bash_aliases" ]; then | |
| ## source "${HOME}/.bash_aliases" | |
| ## fi | |
| alias ls-8601='ls -l -T' | |
| alias ls-full-8601='ls -l –time-style=full-iso' | |
| # octal file modes through http://stackoverflow.com/questions/1795976/can-the-unix-list-command-ls-output-numerical-chmod-permissions | |
| alias lsmod='ls -al|awk '\''{k=0;s=0;for(i=0;i<=8;i++){;k+=((substr($1,i+2,1)~/[rwxst]/)*2^(8-i));};j=4;for(i=4;i<=10;i+=3){;s+=((substr($1,i,1)~/[stST]/)*j);j/=2;};if(k){;printf("%0o%0o ",s,k);};print;}'\''' | |
| # silence the progress meter on Cygwin with -sS via http://stackoverflow.com/questions/7373752/how-do-i-get-curl-to-not-show-the-progress-bar | |
| alias whatismyip='curl -sS http://whatismyip.akamai.com && echo' |
cURL has some idiosyncrasies, for instance Cygwin shows the progress meter by default, but Mac OS X does not. I wanted to disable the cURL progress meter and you heed -sS for that.
ls doesn’t show you octal file modes by default, but chown and umask use them, so I’ve got the lsmod alias through stack-overflow.
Bash initialisation
Getting your bash initialisation right can be tough. There are lengthy discussions about which .bash* files run under what circumstances:
- .bash_profile vs .bashrc.
- shell – What’s the difference between .bashrc, .bash_profile, and .environment?.
–jeroen
The Wiert Corner - irregular stream of stuff 
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