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Checking from shell script if a directory contains files
... -A your/dir)" ]
This trick is inspired from nixCraft's article posted in 2007. Add 2>/dev/null to suppress the output error "No such file or directory".
See also Andrew Taylor's answer (2008) and gr8can8dian's answer (2011).
if [ -n "$(ls -A your/dir 2>/dev/null)" ]
then
echo "contains fi...
Replacing a char at a given index in string? [duplicate]
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answered Feb 20 '12 at 19:26
Thomas LevesqueThomas Levesque
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Installing PDO driver on MySQL Linux server
..., and perhaps to PDO
– artragis
Nov 20 '12 at 15:25
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Getting pids from ps -ef |grep keyword
... -9 to the end
– patte
Feb 5 '17 at 20:45
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Member initialization while using delegated constructor
...y helping actually!
– Korchkidu
Aug 20 '14 at 7:55
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SQL Server IIF vs CASE
...cently came to know about the availability of IIF function in SQL Server 2012. I always use nested CASE in my queries. I want to know the exact purpose of the IIF statement and when should we prefer using IIF over CASE Statement in the query.
I mostly use nested CASE in my queries.
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Is a RelativeLayout more expensive than a LinearLayout?
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In a talk at Google I/O 2013 (Writing Custom Views for Android), Romain Guy clarified the misunderstanding that caused everyone to start using RelativeLayouts for everything. A RelativeLayout always has to do two measure passes. Overall it is neglig...
ORA-30926: unable to get a stable set of rows in the source tables
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This is usually caused by duplicates in the query specified in USING clause. This probably mea...
startActivityForResult() from a Fragment and finishing child Activity, doesn't call onActivityResult
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edited Aug 20 '14 at 14:52
Mr Roshan Pawar
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Why is Class.newInstance() “evil”?
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Chris Jester-YoungChris Jester-Young
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