add useful bash_aliases

README.md

@@ -2,6 +2,54 @@
 
 Here's the --help for each shell script:
 
+### bash_aliases
+
+These bash_aliases need to be called from ~/.bashrc or similar like this:
+
+    . /path/to/this/bash_aliases
+
+They provide to following commands:
+
+They provide to following commands:
+
+    df  - execute "df -h"
+    du  - execute "du -h"
+    bc  - allow for calculations with decimal places by default in bc
+    psa - show all processes but not kernel threads
+    hg  - grep shell history
+    hl  - page shell history
+    pg  - grep processes
+
+Shortcuts to put firefox or thunderbird to rest.
+Requires firefox-sleep/wake and thunderbird-sleep/wake
+
+    ffs, ffw, ths, thw
+
+git shortcuts
+
+    g    - status
+    gd   - diff
+    ga   - add
+    gc   - commit
+    gca  - commit -a
+    gcam - commit -a -m
+    gci  - commit --interactive
+
+chmod shortcuts
+
+    +x  file
+    +r  file
+    +w  file
+    a+x file
+    a+r file
+    a+w file
+
+change directory
+
+    cdreal  file - chdir to wherever the file is located
+    cdwhich file - chdir to wherever the executable is located
+    mcd     file - make directory and cd into it
+
 ### brightness
 
 usage: brightness [--show|percent]

bash_aliases

@@ -0,0 +1,102 @@
+#!/bin/bash
+
+help() {
+  echo 'These bash_aliases need to be called from ~/.bashrc or similar like this:'
+  echo 
+  echo '    . /path/to/this/bash_aliases'
+  echo
+  echo 'They provide to following commands:'
+  echo
+  echo 'They provide to following commands:'
+  echo
+  echo '    df  - execute "df -h"'
+  echo '    du  - execute "du -h"'
+  echo '    bc  - allow for calculations with decimal places by default in bc'
+  echo '    psa - show all processes but not kernel threads'
+  echo '    hg  - grep shell history'
+  echo '    hl  - page shell history'
+  echo '    pg  - grep processes'
+  echo
+  echo 'Shortcuts to put firefox or thunderbird to rest.'
+  echo 'Requires firefox-sleep/wake and thunderbird-sleep/wake'
+  echo
+  echo '    ffs, ffw, ths, thw'
+  echo 
+  echo 'git shortcuts'
+  echo
+  echo '    g    - status'
+  echo '    gd   - diff'
+  echo '    ga   - add'
+  echo '    gc   - commit'
+  echo '    gca  - commit -a'
+  echo '    gcam - commit -a -m'
+  echo '    gci  - commit --interactive'
+  echo
+  echo 'chmod shortcuts'
+  echo
+  echo '    +x  file'
+  echo '    +r  file'
+  echo '    +w  file'
+  echo '    a+x file'
+  echo '    a+r file'
+  echo '    a+w file'
+  echo
+  echo 'change directory'
+  echo
+  echo '    cdreal  file - chdir to wherever the file is located'
+  echo '    cdwhich file - chdir to wherever the executable is located'
+  echo '    mcd     file - make directory and cd into it'
+  echo
+  exit
+}
+
+if [ "$1" == "--help" ]; then
+   help
+fi
+
+alias df="df -h"
+alias du="du -h"
+# bc: scale=20
+alias bc="bc -l"
+
+# firefox/thunderbird
+alias ffs=firefox-sleep
+alias ffw=firefox-wake
+alias ths=thunderbird-sleep
+alias thw=thunderbird-wake
+
+# do not show kernel threads:
+# omit lines with "0:00 [kworker/6:0]" or similar
+alias psa="ps auxw|grep -v -P '\d:\d\d \['"
+
+hg()  { history | grep "$1"; }
+hl()  { history | less +G;   }
+pg()  { ps auxw | grep "$1"; }
+mcd() { mkdir "$1"; cd "$1"; }
+
+# chmod
+alias +x='chmod +x'
+alias +r='chmod +r'
+alias +w='chmod +w'
+alias a+x='chmod a+x'
+alias a+r='chmod a+r'
+alias a+w='chmod a+w'
+
+cdreal() {
+   if [ ! "$1" ]; then
+      dst=.
+   else
+      dst="$1"
+   fi
+   dst=`realpath "$dst"`
+   if [ ! -d "$1" ]; then
+      dst=`dirname "$dst"`
+   fi
+   cd "$dst"
+}
+
+cdwhich() {
+   cd $( dirname $( which $1 ))
+}
+
+