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Merge pull request #3045 from ZanyMonk/master 

Added string manipulation Parameter Expansion to Bash cheat sheet
master
Rob Emery 2016-05-17 23:40:16 +01:00
parent 24755a1018 a00d868326
commit c1c8c98f3c
1 changed files with 56 additions and 0 deletions
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56
share/goodie/cheat_sheets/json/bash.json
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@ -389,6 +389,14 @@
}
],
"Expansion And Other Operators": [
{
"key": "${var:pos}",
"val": "Extracts substring from var at pos"
},
{
"key": "${var:pos:len}",
"val": "Extracts len characters of substring from var at pos"
},
{
"key": "${var:-val}",
"val": "If $var exists and isn't NULL, return its value; otherwise return val"
@ -416,6 +424,54 @@
{
"key": "${#var}",
"val": "String length operator"
},
{
"key": "${str#substr}",
"val": "Deletes shortest match of substr from front of str"
},
{
"key": "${str##substr}",
"val": "Deletes longest match of substr from front of str"
},
{
"key": "${str%substr}",
"val": "Deletes shortest match of substr from back of str"
},
{
"key": "${str%%substr}",
"val": "Deletes longest match of substr from back of str"
},
{
"key": "${str/substr/val}",
"val": "Replace first match of substr with val"
},
{
"key": "${str//substr/val}",
"val": "Replace all matches of substr with val"
},
{
"key": "${str/#substr/val}",
"val": "If $substr matches front end of str, substitute val for substr"
},
{
"key": "${str/%substr/val}",
"val": "If $substr matches back end of str, substitute val for substr"
},
{
"key": "${str^substr}",
"val": "Upper-case of first match of substr. An empty pattern selects first char."
},
{
"key": "${str^^substr}",
"val": "Upper-case of all matches of substr. An empty pattern selects the whole string."
},
{
"key": "${str,substr}",
"val": "Lower-case first match of substr. An empty pattern selects first char."
},
{
"key": "${str,,substr}",
"val": "Lower-case all matches of substr. An empty pattern selects the whole string."
}
],
"Conditionals": [