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What command in Powershell replaces grep -o (which displays only the matched portion of a line instead of a whole line) ? i try use Select-Object but it always display full line. For example:
next line
<a id="tm_param1_text1_item_1" class="tm_param1param2_param3 xxx_zzz qqq_rrrr_www_vv_no_empty" >eeee <span id="ttt_xxx_zzz">0</span></a>
use next command:
cat filename | grep -o '>[0-9]' | grep -o '[0-9]'
output: 0
When i use Select-Object i always see full line (
576
Grep is used in Linux to search for regular expressions in text strings and files. There's no grep cmdlet in PowerShell, but the Select-String cmdlet can be used to achieve the same results. The Windows command line has the findstr command, a grep equivalent for Windows.
In Linux and Unix Systems Grep, short for “global regular expression print”, is a command used in searching and matching text files contained in the regular expressions.
Sed examples Summary: By putting these filters into the top of my scripts (or using them when I launch PowerShell) I've been able to take most of the times where I would need a grep or a sed and utilize this approach to accomplish the same type of functionality.
One way is:
$a = '<a id="tm_param1_text1_item_1" class="tm_param1param2_param3 xxx_zzz qqq_rrrr_www_vv_no_empty" >eeee <span id="ttt_xxx_zzz">0</span></a>'
$a -match '>([0-9])<' #returns true and populate the $matches automatic variable
$matches[1] #returns 0
For selecting strings in text, use select-string rather than select-object. It will return a MatchInfo object. You can access the matches by querying the matches property:
$a = '<a id="tm_param1_text1_item_1" class="tm_param1param2_param3 xxx_zzz qqq_rrrr_www_vv_no_empty" >eeee <span id="ttt_xxx_zzz">0</span></a>'
($a | select-string '>[0-9]').matches[0].value # returns >0
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