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Everything about Expr
Standard UNIX utility
expr is a shell command that evaluates an expression and outputs the result. It evaluates integer or string expressions, including pattern matching regular expressions. Comparison operators apply to both integer and string values. Integer-specific operations include addition, subtraction, multiplication, division and modulus. String-specific operators include:matching a regular expression finding a set of characters in a string finding a substring finding the length of a string Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: ExprA 5-minute orientation
- Skim a recent paper: Trichoderma ‐derived emodin competes with ExpR and ExpI of Pectobacterium carotovorum subsp. carotovorum to biocontrol bacterial soft rotInfluential work since 2022
- Pick up a classic book: Tele/ exprés, cultura y crítica literariaThe most-reprinted book on the subject
- Read the landmark paper: Characterization of the Erwinia chrysanthemi expI–expR locus directing the synthesis of two N‐acyl‐homoserine lactone signal moleculesCited 169 times
- Go sideways: Test (Unix)A closely related topic
- Go sideways: Find (Unix)A closely related topic
📖 Definitions
No dictionary entry for this exact phrase.
🗂️ The subject at a glance
🏆 Landmark papers (most cited)
Characterization of the Erwinia chrysanthemi expI–expR locus directing the synthesis of two N‐acyl‐homoserine lactone signal molecules
The LuxR Homolog ExpR, in Combination with the Sin Quorum Sensing System, Plays a Central Role in Sinorhizobium meliloti Gene Expression
Quorum Sensing in the Plant Pathogen Erwinia carotovora subsp. carotovora: The Role of expREcc
Regulation of Motility by the ExpR/Sin Quorum-Sensing System in Sinorhizobium meliloti
Plant phenolic volatiles inhibit quorum sensing in pectobacteria and reduce their virulence by potential binding to ExpI and ExpR proteins
sinI- andexpR-Dependent Quorum Sensing inSinorhizobium meliloti
Cooperation of two distinct ExpR regulators controls quorum sensing specificity and virulence in the plant pathogen Erwinia carotovora
ExpR, a LuxR Homolog of Erwinia carotovora subsp. carotovora , Activates Transcription of rsmA , Which Specifies a Global Regulatory RNA-Binding Protein
🆕 Influential since 2022
Trichoderma ‐derived emodin competes with ExpR and ExpI of Pectobacterium carotovorum subsp. carotovorum to biocontrol bacterial soft rot
Corrigendum to “MmpL3, the trehalose monomycolate transporter, is stable in solution in several detergents and can be reconstituted into peptidiscs” [Protein Expr. Purif. 191 (March 2022) 106014]
Design Study of FACS-Based Emotional Mapping for Voice-Dr iven Vir tual Char acter Facial Expr essions
Corrigendum to “Comparative expression analysis of TEADs and their splice variants in mouse embryonic stem cells” [Gene Expr Patterns 47 (2022) 119302/36516960]
Retraction notice to "KDM5A-Mediated Methylation of GPR124 Contributes to PANoptosis of EA.hy926 Cells in Atherosclerosis" [Crit Rev Crit Rev Eukaryot Gene Expr. 2025;35(6):37-45].
📚 Books worth reading
- 📕Tele/ exprés, cultura y crítica literariaAlberto Cabello Hernández · 2015
- 📕EXPRES, an expert system for assessing the fate of pesticides in the subsurfaceJames Percy Mutch · 1993
Postman Pat and the sleepy bats · 2009
Secure and uncertainRaymond F. Currie · 2008
Tiens-Toi Bien, MathieuAllan Morgan · 1998
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
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